ssk250
November 4, 2014, 7:40am
1
Hi All,
I am using HP-UX 11i v1(B11.11) servers for my work and its memory (RAM) utilization is consistenly 80% for the last one year. Though I am not facing any issues with this high memory utilization I just want to know the below queries:
1) Is it the default behavior of HP-UX systems?
2) Is it the actual utilization value or else anything need to be subtracted to get actual value?
3) If it is a bottle neck what are the commands I need to run or else what are the stats I need to collect to know which is causing the bottleneck?
Thanks in advance.
vbe
November 4, 2014, 8:01am
2
Its more a question of how much RAM you have and how disk space is mounted...
If you have little memory its quite normal all is used.. We need to know more about your system, commands you can type:
model
swapinfo -tam
bdf
sysdef
...
1 Like
Please give the following:
kmtune -q dbc_max_pct -q dbc_min_pct
kmtune -q nbuf -q bufpages
1 Like
ssk250
November 6, 2014, 2:36am
4
model
9000/800/rp4440
swapinfo -tam
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 16384 0 16384 0% 0 - 1 /dev/vx/dsk/rootdg/swapvol
reserve - 2794 -2794
memory 18901 14469 4432 77%
total 35285 17263 18022 49% - 0 -
bdf
Filesystem kbytes used avail %used Mounted on
/dev/vx/dsk/rootdg/rootvol
16777216 4034148 12574020 24% /
/dev/vx/dsk/rootdg/standvol
320616 89880 198674 31% /stand
/dev/vx/dsk/rootdg/varvol
18874368 9290424 9434336 50% /var
/dev/vx/dsk/rootdg/usrvol
16777216 1643240 14897596 10% /usr
/dev/vx/dsk/rootdg/tmpvol
16777216 8749796 7902008 53% /tmp
/dev/vx/dsk/rootdg/quest_installvol
8388608 2341146 5669659 29% /quest_install
/dev/vx/dsk/rootdg/oracle_installvol
2097152 111808 1861268 6% /oracle_install
/dev/vx/dsk/rootdg/oracle_install_product_9.2.0vol
8388608 6048221 2194223 73% /oracle_install/product/9.2.0
/dev/vx/dsk/rootdg/oracle_adminvol
2097152 993457 1034777 49% /oracle_admin
/dev/vx/dsk/rootdg/oracle_admin_mnp1vol
2097152 90851 1881028 5% /oracle_admin/mnp1
/dev/vx/dsk/rootdg/optvol
16777216 4894496 11697172 29% /opt
/dev/vx/dsk/rootdg/homevol
10485760 7349952 3111432 70% /home
/dev/vx/dsk/rootdg/ecc600
524288 337076 175905 66% /ECC600
/dev/vx/dsk/mnpdg/mnpP_db01_vol
84671488 81370216 3270805 96% /mnp_db01
/dev/vx/dsk/mnpdg/orasrv_vol
1048576 16806 967291 2% /orasrv
/dev/vx/dsk/mnpdg/oracle_admin_mnpP_arch_vol
12582912 25037 11773206 0% /oracle_admin/mnp/arch
/dev/vx/dsk/mnpdg/oracle_admin_mnpP_backup_vol
95229952 10760121 79190536 12% /oracle_admin/mnp/backup
/dev/vx/dsk/mnpdg/mnpP_db02_vol
79932416 16676123 59302781 22% /mnp_db02
/dev/vx/dsk/mnpdg/mnpvol
2097152 1405247 649065 68% /data/weblogic/mnp1
kmtune -q dbc_max_pct -q dbc_min_pct
Parameter Current Dyn Planned Module Version
===============================================================================
dbc_max_pct 50 - 50
dbc_min_pct 5 - 5
mnpp1:/->
sysdef
NAME VALUE BOOT MIN-MAX UNITS FLAGS
acctresume 4 - -100-100 -
acctsuspend 2 - -100-100 -
allocate_fs_swapmap 0 - - -
bufpages 3145472 - 0- Pages -
create_fastlinks 0 - - -
dbc_max_pct 50 - - -
dbc_min_pct 5 - - -
default_disk_ir 0 - - -
dskless_node 0 - 0-1 -
eisa_io_estimate 768 - - -
eqmemsize 110 - - -
file_pad 10 - 0- -
fs_async 0 - 0-1 -
hpux_aes_override 0 - - -
maxdsiz 65536 - 0-503866 Pages -
maxdsiz_64bit 524288 - 1024-1073479679 Pages -
maxfiles 2048 - 30-2048 -
maxfiles_lim 2048 - 30-2048 -
maxssiz 2048 - 0-98048 Pages -
maxssiz_64bit 262144 - 4-262144 Pages -
maxswapchunks 16384 - 1-16384 -
maxtsiz 16384 - 0-503859 Pages -
maxtsiz_64bit 262144 - 1024-1073741823 Pages -
maxuprc 3704 - 3- -
maxvgs 10 - - -
msgmap 4115 - 3- -
nbuf 1933206 - 0- -
ncallout 8544 - 6- -
ncdnode 150 - - -
ndilbuffers 30 - 1- -
netisr_priority -1 - -1-127 -
netmemmax 0 - - -
nfile 63798 - 14- -
nflocks 4096 - 2- -
ninode 34976 - 14- -
no_lvm_disks 0 - - -
nproc 4864 - 10- -
npty 60 - 1- -
nstrpty 60 - - -
nswapdev 10 - 1-25 -
nswapfs 10 - 1-25 -
public_shlibs 1 - - -
remote_nfs_swap 0 - - -
rtsched_numpri 32 - - -
sema 0 - 0-1 -
semmap 4095 - 4- -
shmem 0 - 0-1 -
shmmni 512 - 3-1024 -
streampipes 0 - 0- -
swapmem_on 1 - - -
swchunk 2048 - 2048-16384 kBytes -
timeslice 10 - -1-2147483648 Ticks -
unlockable_mem 98304 - 0- Pages -
kmtune -q nbuf -q bufpages
Parameter Current Dyn Planned Module Version
===============================================================================
nbuf 0 - 0
bufpages 0 - (NBUF*2)
top
Memory: 2562392K (1772224K) real, 3541284K (2585332K) virtual, 5244952K free
vbe
November 6, 2014, 9:22am
5
If you have cstm installed:
echo "selclass qualifier memory;info;wait;infolog" | /usr/sbin/cstm
or possibly
grep hysical /var/adm/syslog/syslog.log
From what we see I assume its quite normal with the way the server is configured... to say if that is optimum is another thing... but to say more we need to know how much effective RAM you have ( the 2 snippets above... )
As I see you have some oracle structure, so if you are running some RDBMS instances then the shared memory stanza from :
ipcs -b
or if you know the siz of SGA, will help see more clear...
Ah...
And what disks you use! (SAN?...)
Yes, everything is normal,
I bat on Oracle shared memory, too.
Maybe also reflected by the VSZ value in
env UNIX95=1 ps -eo user,pid,sz,vsz,comm
1 Like
rbatte1
November 6, 2014, 12:45pm
7
I would not worry about real memory being shown as used. The OS will retains data (including code) that have been used in case another process wants them as it is more efficient that reading from disk again. Memory is overwritten when there is a request for some and none is available. Either the oldest referenced section is overwritten or if it is still valid (i.e. owned by a process) it will be copied to the swap area and then overwritten. Consequently, memory appears full pretty much all the time.
Can you tell us:-
How much real memory you have
How much paging or swap space you have
How much paging or swap is currently in use. The command swapinfo -a
is useful here. Read the manual page for information about the output.
How busy is your swap, i.e. is it being written/read back from a lot. The command vmstat 5
will give you this. Look at columns pi & po for the values.
If we see something horrible, then maybe it's time to try tuning, but let's not panic yet.
Regards,
Robin
1 Like
The OP gave already swapinfo -tam
output. No swap space (dev) is in use.
vbe
November 6, 2014, 1:19pm
9
Its using pseudoswap, since kernel parameter swapmem_on is set to 1... (and so uses all the memory it can for swap...)
1 Like
ssk250
November 10, 2014, 7:38am
10
Hi All,
Below are the details you requested for:
1) swapinfo -a
2) vmstat 5
3) grep hysical /var/adm/syslog/syslog.log
4) echo "selclass qualifier memory;info;wait;infolog" | /usr/sbin/cstm
5) ipcs -b
Want to know will this make any permanent changes to my system environment
env UNIX95=1 ps -eo user,pid,sz,vsz,comm
.
Not sure about SAN details may be it is EMC SAN. Can you please tell me how to check these details ?
swapinfo -a
Kb Kb Kb PCT START/ Kb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 16777216 0 16777216 0% 0 - 1 /dev/vx/dsk/rootdg/swapvol
reserve - 3239960 -3239960
memory 19354936 14816344 4538592 77%
vmstat 5
procs memory page faults cpu
r b w avm free re at pi po fr de sr in sy cs us sy id
1 0 0 646786 1227857 95 38 0 0 0 0 0 3155 9900 1072 4 3 94
1 0 0 687371 1226635 384 173 0 0 0 0 0 1676 11868 1207 3 3 94
1 0 0 687371 1227752 285 114 0 0 0 0 0 1314 14962 2030 8 3 89
1 0 0 809608 1227752 94 36 0 0 0 0 0 2101 13015 1648 6 2 92
1 0 0 809608 1227724 160 36 0 0 0 0 0 2198 14004 1714 9 2 89
1 0 0 851149 1227744 66 12 0 0 0 0 0 1562 6532 1075 1 1 99
1 0 0 851149 1231852 29 6 0 0 0 0 0 1388 5643 904 1 5 94
1 0 0 765310 1231852 10 0 0 0 0 0 0 1201 2825 740 1 1 99
1 0 0 765310 1231852 85 25 0 0 0 0 0 1149 4404 757 1 1 98
1 0 0 719095 1230640 121 39 0 0 0 0 0 1492 6272 781 2 3 95
1 0 0 719095 1230635 39 12 0 0 0 0 0 1250 4477 735 2 1 97
2 0 0 730115 1230793 26 5 0 0 0 0 0 1155 2681 692 1 1 98
2 0 0 730115 1230793 42 26 0 0 0 0 0 1152 3009 710 2 1 97
1 0 0 698506 1230793 405 179 0 0 0 0 0 1991 13016 1289 4 3 93
1 0 0 698506 1230856 208 92 0 0 0 0 0 1419 8146 898 1 1 98
1 0 0 696764 1230856 74 28 0 0 0 0 0 1225 3849 753 0 1 99
grep hysical /var/adm/syslog/syslog.log
Apr 4 06:55:52 fmnpp1 vmunix: physical page size = 4096 bytes, logical page size = 4096 bytes
Apr 4 06:55:52 fmnpp1 vmunix: Physical: 25163776 Kbytes, lockable: 19316660 Kbytes, available: 22195080 Kbytes
echo "selclass qualifier memory;info;wait;infolog" | /usr/sbin/cstm
Running Command File (/usr/sbin/stm/ui/config/.stmrc).
-- Information --
Support Tools Manager
Version A.57.10
Product Number B4708AA
(C) Copyright Hewlett Packard Co. 1995-2007
All Rights Reserved
Use of this program is subject to the licensing restrictions described
in "Help-->On Version". HP shall not be liable for any damages resulting
from misuse or unauthorized use of this program.
cstm>selclass qualifier memory;info;wait;infolog
-- Updating Map --
Updating Map...
-- Converting a (67820) byte raw log file to text. --
Preparing the Information Tool Log for MEMORY on path 8 File ...
-- Information Tool Log for MEMORY on path 8 --
Log creation time: Mon Nov 10 11:20:31 2014
Hardware path: 8
Basic Memory Description
Module Type: MEMORY
Total Configured Memory : 24576 MB
Page Size: 4096 Bytes
Memory interleaving is supported on this machine and is ON.
Memory Board Inventory
DIMM Slot Size (MB)
--------- ---------
0A 2048
0B 2048
0C 2048
0D 2048
1A 2048
1B 2048
1C 2048
1D 2048
2A 2048
2B 2048
2C 2048
2D 2048
3A 0
3B 0
3C 0
3D 0
--------- ---------
System Total (MB): 24576
Memory Error Log Summary
Error
Board Error Address Error Type Page Count
------------- ----------------- ---------- --------- -----
1b 0x000000034b58c290 Single-Bit 0x034b58c 1
1b 0x000000034bfac2d8 Single-Bit 0x034bfac 1
1b 0x000000034af8c290 Single-Bit 0x034af8c 1
1b 0x0000000349f8c280 Single-Bit 0x0349f8c 1
1b 0x000000034b3ac280 Single-Bit 0x034b3ac 1
1a 0x00000003505a3b80 Single-Bit 0x03505a3 1
1a 0x00000003505a0720 Single-Bit 0x03505a0 1
1a 0x00000003505af650 Single-Bit 0x03505af 1
1a 0x00000003505a63e0 Single-Bit 0x03505a6 1
1a 0x00000003505aefc8 Single-Bit 0x03505ae 1
1a 0x00000003505aaaa8 Single-Bit 0x03505aa 1
1a 0x00000003505b3e60 Single-Bit 0x03505b3 1
1a 0x00000003505a17b8 Single-Bit 0x03505a1 1
1a 0x00000003505ace80 Single-Bit 0x03505ac 1
1a 0x00000003505b2fe0 Single-Bit 0x03505b2 1
1a 0x00000003505b5fe0 Single-Bit 0x03505b5 1
1a 0x00000003505a4378 Single-Bit 0x03505a4 1
1a 0x00000003505bc7f8 Single-Bit 0x03505bc 1
1a 0x00000003505a8fa0 Single-Bit 0x03505a8 1
1a 0x00000003505b4b48 Single-Bit 0x03505b4 1
1a 0x00000003505b0700 Single-Bit 0x03505b0 1
1a 0x00000003505beff8 Single-Bit 0x03505be 1
1a 0x00000003505bd708 Single-Bit 0x03505bd 1
1a 0x00000003505ba6b0 Single-Bit 0x03505ba 1
1a 0x00000003505bb738 Single-Bit 0x03505bb 1
1a 0x00000003505a92c8 Single-Bit 0x03505a9 1
1a 0x00000003505b7f20 Single-Bit 0x03505b7 1
1a 0x00000003505b8280 Single-Bit 0x03505b8 1
1a 0x00000003505ab768 Single-Bit 0x03505ab 1
1a 0x00000003505a5720 Single-Bit 0x03505a5 1
1a 0x00000003505b9730 Single-Bit 0x03505b9 1
1a 0x00000003505bf6f0 Single-Bit 0x03505bf 1
1a 0x00000003505ad3d8 Single-Bit 0x03505ad 1
1a 0x00000003505b12f8 Single-Bit 0x03505b1 1
1a 0x00000003505b6b70 Single-Bit 0x03505b6 1
1a 0x00000003505a7a18 Single-Bit 0x03505a7 1
1a 0x00000003505a2f98 Single-Bit 0x03505a2 1
1b 0x000000034718c280 Single-Bit 0x034718c 1
1b 0x000000034b7ac2a0 Single-Bit 0x034b7ac 1
1b 0x000000034a1ac290 Single-Bit 0x034a1ac 1
1b 0x000000034a5ac280 Single-Bit 0x034a5ac 1
1b 0x000000034adac2b8 Single-Bit 0x034adac 1
1b 0x000000034a38c2f8 Single-Bit 0x034a38c 1
1b 0x0000000349fac2c8 Single-Bit 0x0349fac 2
1b 0x0000000349dac280 Single-Bit 0x0349dac 1
1b 0x00000003c398c2d0 Single-Bit 0x03c398c 6
1b 0x0000000349d8c288 Single-Bit 0x0349d8c 1
1b 0x00000003c2dac288 Single-Bit 0x03c2dac 5
1b 0x00000003891ac288 Single-Bit 0x03891ac 4
1b 0x00000003c198c2a8 Single-Bit 0x03c198c 7
1b 0x00000003befac2b8 Single-Bit 0x03befac 6
1b 0x00000003be1ac280 Single-Bit 0x03be1ac 6
1b 0x000000038af8c280 Single-Bit 0x038af8c 9
1b 0x000000034bf8c2e8 Single-Bit 0x034bf8c 1
1b 0x0000000388fac2a8 Single-Bit 0x0388fac 7
1b 0x000000038818c2b0 Single-Bit 0x038818c 6
1b 0x00000003111ac2d8 Single-Bit 0x03111ac 5
1b 0x0000000310fac2d0 Single-Bit 0x0310fac 4
1b 0x0000000310bac2b0 Single-Bit 0x0310bac 7
1b 0x00000003c3fac2b8 Single-Bit 0x03c3fac 8
1b 0x00000003bf1ac2c8 Single-Bit 0x03bf1ac 8
1b 0x000000034c18c280 Single-Bit 0x034c18c 1
1b 0x0000000313f8c2d0 Single-Bit 0x0313f8c 1
1b 0x000000038958c2d0 Single-Bit 0x038958c 1
1b 0x00000003889ac2b0 Single-Bit 0x03889ac 10
1b 0x000000038b3ac2b0 Single-Bit 0x038b3ac 6
1b 0x0000000348b8c2b8 Single-Bit 0x0348b8c 1
1b 0x000000038b98c2b0 Single-Bit 0x038b98c 6
1b 0x000000038998c2d0 Single-Bit 0x038998c 7
1b 0x00000003bd5ac2c8 Single-Bit 0x03bd5ac 5
1b 0x0000000389dac2d0 Single-Bit 0x0389dac 197
1b 0x00000003c018c2d8 Single-Bit 0x03c018c 10
1b 0x00000003139ac2b8 Single-Bit 0x03139ac 6
1b 0x00000003bff8c2c8 Single-Bit 0x03bff8c 8
1b 0x0000000346d8c280 Single-Bit 0x0346d8c 1
1b 0x0000000346b8c280 Single-Bit 0x0346b8c 1
1b 0x000000034878c280 Single-Bit 0x034878c 1
1b 0x00000003bf9ac2f8 Single-Bit 0x03bf9ac 7
1b 0x000000034698c280 Single-Bit 0x034698c 1
1b 0x00000003c1fac2d0 Single-Bit 0x03c1fac 9
1b 0x00000003bcfac2f8 Single-Bit 0x03bcfac 5
1b 0x00000003c13ac2d0 Single-Bit 0x03c13ac 7
1b 0x00000003485ac280 Single-Bit 0x03485ac 1
1b 0x000000034618c280 Single-Bit 0x034618c 1
1b 0x0000000345f8c280 Single-Bit 0x0345f8c 1
1b 0x0000000344d8c280 Single-Bit 0x0344d8c 1
1b 0x0000000343f8c280 Single-Bit 0x0343f8c 1
1b 0x000000034198c280 Single-Bit 0x034198c 1
1b 0x0000000340f8c280 Single-Bit 0x0340f8c 1
1b 0x000000034018c280 Single-Bit 0x034018c 1
1b 0x00000003c31ac2f0 Single-Bit 0x03c31ac 8
1b 0x00000003bc9ac2d0 Single-Bit 0x03bc9ac 1
1b 0x00000003bdb8c2d0 Single-Bit 0x03bdb8c 1
1b 0x00000003c1dac2d0 Single-Bit 0x03c1dac 136
1b 0x0000000312fac2d0 Single-Bit 0x0312fac 1
1b 0x000000038adac2d0 Single-Bit 0x038adac 47
1b 0x00000003bcf8c2c8 Single-Bit 0x03bcf8c 8
1b 0x00000003bd78c2d0 Single-Bit 0x03bd78c 20
1b 0x00000003121ac2d0 Single-Bit 0x03121ac 1
1b 0x000000031138c2d0 Single-Bit 0x031138c 23
1b 0x00000003bc1ac2d0 Single-Bit 0x03bc1ac 48
1b 0x000000038938c2d0 Single-Bit 0x038938c 1
1b 0x00000003c39ac2d0 Single-Bit 0x03c39ac 4
1b 0x00000003c17ac2d0 Single-Bit 0x03c17ac 29
1b 0x0000000389b8c2d0 Single-Bit 0x0389b8c 12
1b 0x0000000311f8c2d0 Single-Bit 0x0311f8c 86
1b 0x00000003c2fac2d0 Single-Bit 0x03c2fac 10
1b 0x00000003bffac2d0 Single-Bit 0x03bffac 7
1b 0x00000003be78c2d0 Single-Bit 0x03be78c 14
1b 0x00000003c038c2d0 Single-Bit 0x03c038c 26
1b 0x00000003bebac2d0 Single-Bit 0x03bebac 2
1b 0x0000000388d8c2d0 Single-Bit 0x0388d8c 1
1b 0x00000003bef8c2d0 Single-Bit 0x03bef8c 44
1b 0x0000000388b8c2d0 Single-Bit 0x0388b8c 23
1b 0x00000003bd1ac2d0 Single-Bit 0x03bd1ac 2
1b 0x00000003101ac2d0 Single-Bit 0x03101ac 77
1b 0x00000003897ac2d0 Single-Bit 0x03897ac 4
1b 0x0000000310b8c2d0 Single-Bit 0x0310b8c 2
1b 0x00000003c33ac2d0 Single-Bit 0x03c33ac 3
1b 0x00000003bc58c2d0 Single-Bit 0x03bc58c 14
1b 0x00000003c19ac2d0 Single-Bit 0x03c19ac 18
1b 0x0000000311d8c2d0 Single-Bit 0x0311d8c 33
1b 0x00000003c3bac2d0 Single-Bit 0x03c3bac 3
1b 0x00000003be98c2d0 Single-Bit 0x03be98c 15
1b 0x00000003105ac2d0 Single-Bit 0x03105ac 14
1b 0x00000003c03ac2d0 Single-Bit 0x03c03ac 22
1b 0x00000003ba7ac280 Single-Bit 0x03ba7ac 1
1b 0x00000003d498c280 Single-Bit 0x03d498c 1
1b 0x00000003bfbac2d0 Single-Bit 0x03bfbac 23
1b 0x00000003885ac2a0 Single-Bit 0x03885ac 1
1b 0x00000003f0bac280 Single-Bit 0x03f0bac 1
1b 0x00000003315ac280 Single-Bit 0x03315ac 1
1b 0x000000030038c280 Single-Bit 0x030038c 1
1b 0x000000038ff8c280 Single-Bit 0x038ff8c 1
1b 0x00000003eb98c280 Single-Bit 0x03eb98c 1
1b 0x00000003eab8c280 Single-Bit 0x03eab8c 1
1b 0x000000032e5ac280 Single-Bit 0x032e5ac 1
1b 0x000000032bb8c280 Single-Bit 0x032bb8c 1
1b 0x000000030178c280 Single-Bit 0x030178c 2
1b 0x0000000316b8c280 Single-Bit 0x0316b8c 1
1b 0x00000003aefac280 Single-Bit 0x03aefac 1
1b 0x00000003097ac280 Single-Bit 0x03097ac 1
1b 0x0000000321dac280 Single-Bit 0x0321dac 1
1b 0x00000003881ac2d0 Single-Bit 0x03881ac 3
1b 0x00000003e0d8c280 Single-Bit 0x03e0d8c 1
1b 0x000000030598c280 Single-Bit 0x030598c 1
1b 0x00000003c478c280 Single-Bit 0x03c478c 1
1b 0x00000003dbbac280 Single-Bit 0x03dbbac 1
1b 0x000000030a78c280 Single-Bit 0x030a78c 1
1b 0x0000000304dac280 Single-Bit 0x0304dac 1
1b 0x00000003e8dac280 Single-Bit 0x03e8dac 2
1b 0x00000003e2fac280 Single-Bit 0x03e2fac 2
1b 0x00000003c1d8c2d0 Single-Bit 0x03c1d8c 1
1b 0x00000003c338c2d0 Single-Bit 0x03c338c 15
1b 0x00000003f038c280 Single-Bit 0x03f038c 1
1b 0x000000031258c2d0 Single-Bit 0x031258c 10
1b 0x00000003c358c2d0 Single-Bit 0x03c358c 1
1b 0x000000038b5ac280 Single-Bit 0x038b5ac 1
1b 0x00000003a778c280 Single-Bit 0x03a778c 1
1b 0x000000031318c2d0 Single-Bit 0x031318c 27
1b 0x0000000334fac280 Single-Bit 0x0334fac 2
1b 0x00000003e85ac280 Single-Bit 0x03e85ac 1
1b 0x000000039bbac280 Single-Bit 0x039bbac 1
1b 0x00000003d7dac280 Single-Bit 0x03d7dac 1
1b 0x00000003eebac280 Single-Bit 0x03eebac 1
1b 0x00000003cc1ac280 Single-Bit 0x03cc1ac 1
1b 0x000000030458c280 Single-Bit 0x030458c 1
1b 0x00000003a6b8c280 Single-Bit 0x03a6b8c 1
1b 0x000000032f3ac280 Single-Bit 0x032f3ac 1
1b 0x000000039778c280 Single-Bit 0x039778c 1
1b 0x00000003f23ac280 Single-Bit 0x03f23ac 1
1b 0x00000003287ac280 Single-Bit 0x03287ac 1
1b 0x0000000392d8c280 Single-Bit 0x0392d8c 1
1b 0x00000003e39ac280 Single-Bit 0x03e39ac 1
1b 0x000000030bb8c280 Single-Bit 0x030bb8c 1
1b 0x000000032c18c280 Single-Bit 0x032c18c 1
1b 0x00000003bf38c2d0 Single-Bit 0x03bf38c 5
1b 0x0000000388f8c2d0 Single-Bit 0x0388f8c 72
1b 0x00000003bed8c2d0 Single-Bit 0x03bed8c 3
1b 0x00000003bc38c2d0 Single-Bit 0x03bc38c 17
1b 0x00000003c0dac2d0 Single-Bit 0x03c0dac 7
1b 0x000000038afac2d0 Single-Bit 0x038afac 1
1b 0x000000038b18c2d0 Single-Bit 0x038b18c 4
1b 0x000000031378c2d0 Single-Bit 0x031378c 1
1b 0x00000003c098c2d0 Single-Bit 0x03c098c 1
1b 0x00000003c2d8c2d0 Single-Bit 0x03c2d8c 4
1b 0x000000031358c2d0 Single-Bit 0x031358c 65
1b 0x0000000311fac2d0 Single-Bit 0x0311fac 3
1b 0x000000031098c2d0 Single-Bit 0x031098c 1
1b 0x00000003fedac280 Single-Bit 0x03fedac 2
1b 0x000000039f7ac280 Single-Bit 0x039f7ac 5
1b 0x00000003c1f8c2d0 Single-Bit 0x03c1f8c 3
1b 0x000000031118c2d0 Single-Bit 0x031118c 1
1b 0x0000000389d8c2d0 Single-Bit 0x0389d8c 8
1b 0x00000003ec58c280 Single-Bit 0x03ec58c 1
1b 0x0000000312d8c2d0 Single-Bit 0x0312d8c 16
1b 0x00000003bf98c2d0 Single-Bit 0x03bf98c 14
1b 0x00000003113ac2d0 Single-Bit 0x03113ac 35
1b 0x000000038abac2d0 Single-Bit 0x038abac 3
1b 0x00000003bf7ac2d0 Single-Bit 0x03bf7ac 1
1b 0x00000003bd9ac2d0 Single-Bit 0x03bd9ac 2
1b 0x000000038bdac2d0 Single-Bit 0x038bdac 66
1b 0x0000000389fac2d0 Single-Bit 0x0389fac 5
1b 0x0000000310dac2d0 Single-Bit 0x0310dac 1
1b 0x00000003887ac2d0 Single-Bit 0x03887ac 25
1b 0x00000003c23ac2d0 Single-Bit 0x03c23ac 55
1b 0x000000038bd8c2d0 Single-Bit 0x038bd8c 3
1b 0x000000038a58c2d0 Single-Bit 0x038a58c 25
1b 0x00000003c178c2d0 Single-Bit 0x03c178c 4
1b 0x00000003125ac2d0 Single-Bit 0x03125ac 2
1b 0x00000003c25ac2d0 Single-Bit 0x03c25ac 19
1b 0x0000000389bac2d0 Single-Bit 0x0389bac 3
1b 0x00000003be18c2d0 Single-Bit 0x03be18c 2
1b 0x00000003bdd8c2d0 Single-Bit 0x03bdd8c 5
1b 0x0000000388bac2d0 Single-Bit 0x0388bac 30
1b 0x00000003d0f8c280 Single-Bit 0x03d0f8c 1
1b 0x00000003147ac280 Single-Bit 0x03147ac 6
1b 0x000000039afac280 Single-Bit 0x039afac 6
1b 0x00000003c378c2d0 Single-Bit 0x03c378c 2
1b 0x000000038878c2d0 Single-Bit 0x038878c 25
1b 0x000000038a3ac2d0 Single-Bit 0x038a3ac 53
1b 0x0000000311b8c2d0 Single-Bit 0x0311b8c 21
1b 0x000000033e38c280 Single-Bit 0x033e38c 1
1b 0x0000000312dac2d0 Single-Bit 0x0312dac 5
1b 0x000000038898c2d0 Single-Bit 0x038898c 4
1b 0x00000003bf3ac2d0 Single-Bit 0x03bf3ac 2
1b 0x00000003bc7ac2d0 Single-Bit 0x03bc7ac 1
1b 0x0000000312b8c2d0 Single-Bit 0x0312b8c 36
1b 0x00000003c3dac2d0 Single-Bit 0x03c3dac 7
1b 0x00000003c3d8c2d0 Single-Bit 0x03c3d8c 3
1b 0x00000003be7ac2d0 Single-Bit 0x03be7ac 1
1b 0x000000038b78c2d0 Single-Bit 0x038b78c 18
1b 0x00000003bedac2d0 Single-Bit 0x03bedac 4
1b 0x000000031018c2d0 Single-Bit 0x031018c 10
1b 0x00000003bc98c2d0 Single-Bit 0x03bc98c 19
1b 0x000000032418c280 Single-Bit 0x032418c 1
1b 0x00000003899ac2d0 Single-Bit 0x03899ac 1
1b 0x00000003bdfac2d0 Single-Bit 0x03bdfac 1
1b 0x000000038b1ac2d0 Single-Bit 0x038b1ac 10
1b 0x00000003093ac280 Single-Bit 0x03093ac 1
1b 0x000000038ad8c2d0 Single-Bit 0x038ad8c 14
1b 0x00000003cfd8c280 Single-Bit 0x03cfd8c 3
1b 0x00000003b8bac280 Single-Bit 0x03b8bac 2
1b 0x000000038d98c280 Single-Bit 0x038d98c 1
1b 0x000000030c18c280 Single-Bit 0x030c18c 1
1b 0x00000003bd58c2d0 Single-Bit 0x03bd58c 8
1b 0x00000003bf58c2d0 Single-Bit 0x03bf58c 1
1b 0x000000032ef8c290 Single-Bit 0x032ef8c 1
1b 0x0000000313d8c2d0 Single-Bit 0x0313d8c 1
1b 0x00000003bfb8c2d0 Single-Bit 0x03bfb8c 4
1b 0x0000000310f8c2d0 Single-Bit 0x0310f8c 7
1b 0x00000003c118c2d0 Single-Bit 0x03c118c 4
1b 0x00000003c598c280 Single-Bit 0x03c598c 1
1b 0x000000033ad8c280 Single-Bit 0x033ad8c 1
1b 0x000000031218c2d0 Single-Bit 0x031218c 2
1b 0x00000003bd38c2d0 Single-Bit 0x03bd38c 1
System start: Wed Jan 12 00:20:31 2011.
Last error check: Mon Nov 10 10:53:32 2014.
Logging interval: 3600 seconds.
256 address(es) with errors logged by memory logging daemon.
The Logtool Utility provides full details about the memory error log.
Page Deallocation Table (PDT)
Slot/Set Error Address Error Type Page
---------------- --------------- ---------- ---------
1a/1b/1c/1d 0x000000030178c285 Single-Bit 0x030178c
1a/1b/1c/1d 0x000000030f7ac285 Single-Bit 0x030f7ac
1a/1b/1c/1d 0x000000031018c285 Single-Bit 0x031018c
1a/1b/1c/1d 0x00000003101ac285 Single-Bit 0x03101ac
1a/1b/1c/1d 0x00000003103ac285 Single-Bit 0x03103ac
1a/1b/1c/1d 0x00000003105ac285 Single-Bit 0x03105ac
1a/1b/1c/1d 0x00000003109ac285 Single-Bit 0x03109ac
1a/1b/1c/1d 0x0000000310b8c285 Single-Bit 0x0310b8c
1a/1b/1c/1d 0x0000000310bac285 Single-Bit 0x0310bac
1a/1b/1c/1d 0x0000000310f8c285 Single-Bit 0x0310f8c
1a/1b/1c/1d 0x000000031138c285 Single-Bit 0x031138c
1a/1b/1c/1d 0x00000003113ac285 Single-Bit 0x03113ac
1a/1b/1c/1d 0x0000000311b8c285 Single-Bit 0x0311b8c
1a/1b/1c/1d 0x0000000311d8c285 Single-Bit 0x0311d8c
1a/1b/1c/1d 0x0000000311f8c285 Single-Bit 0x0311f8c
1a/1b/1c/1d 0x0000000311fac285 Single-Bit 0x0311fac
1a/1b/1c/1d 0x000000031218c285 Single-Bit 0x031218c
1a/1b/1c/1d 0x00000003123ac285 Single-Bit 0x03123ac
1a/1b/1c/1d 0x000000031258c285 Single-Bit 0x031258c
1a/1b/1c/1d 0x00000003125ac285 Single-Bit 0x03125ac
1a/1b/1c/1d 0x000000031278c285 Single-Bit 0x031278c
1a/1b/1c/1d 0x0000000312b8c285 Single-Bit 0x0312b8c
1a/1b/1c/1d 0x0000000312bac285 Single-Bit 0x0312bac
1a/1b/1c/1d 0x0000000312d8c285 Single-Bit 0x0312d8c
1a/1b/1c/1d 0x0000000312dac285 Single-Bit 0x0312dac
1a/1b/1c/1d 0x000000031318c285 Single-Bit 0x031318c
1a/1b/1c/1d 0x000000031358c285 Single-Bit 0x031358c
1a/1b/1c/1d 0x000000031398c285 Single-Bit 0x031398c
1a/1b/1c/1d 0x0000000313bac285 Single-Bit 0x0313bac
1a/1b/1c/1d 0x0000000313fac285 Single-Bit 0x0313fac
1a/1b/1c/1d 0x00000003147ac285 Single-Bit 0x03147ac
1a/1b/1c/1d 0x0000000334fac285 Single-Bit 0x0334fac
1a/1b/1c/1d 0x000000038818c285 Single-Bit 0x038818c
1a/1b/1c/1d 0x00000003881ac285 Single-Bit 0x03881ac
1a/1b/1c/1d 0x000000038878c285 Single-Bit 0x038878c
1a/1b/1c/1d 0x00000003887ac285 Single-Bit 0x03887ac
1a/1b/1c/1d 0x000000038898c285 Single-Bit 0x038898c
1a/1b/1c/1d 0x00000003889ac285 Single-Bit 0x03889ac
1a/1b/1c/1d 0x0000000388b8c285 Single-Bit 0x0388b8c
1a/1b/1c/1d 0x0000000388bac285 Single-Bit 0x0388bac
1a/1b/1c/1d 0x0000000388f8c285 Single-Bit 0x0388f8c
1a/1b/1c/1d 0x0000000388fac285 Single-Bit 0x0388fac
1a/1b/1c/1d 0x000000038918c285 Single-Bit 0x038918c
1a/1b/1c/1d 0x00000003897ac285 Single-Bit 0x03897ac
1a/1b/1c/1d 0x000000038998c285 Single-Bit 0x038998c
1a/1b/1c/1d 0x0000000389b8c285 Single-Bit 0x0389b8c
1a/1b/1c/1d 0x0000000389bac285 Single-Bit 0x0389bac
1a/1b/1c/1d 0x0000000389d8c285 Single-Bit 0x0389d8c
1a/1b/1c/1d 0x0000000389dac285 Single-Bit 0x0389dac
1a/1b/1c/1d 0x0000000389fac285 Single-Bit 0x0389fac
1a/1b/1c/1d 0x000000038a3ac285 Single-Bit 0x038a3ac
1a/1b/1c/1d 0x000000038a58c285 Single-Bit 0x038a58c
1a/1b/1c/1d 0x000000038ab8c285 Single-Bit 0x038ab8c
1a/1b/1c/1d 0x000000038abac285 Single-Bit 0x038abac
1a/1b/1c/1d 0x000000038ad8c285 Single-Bit 0x038ad8c
1a/1b/1c/1d 0x000000038adac285 Single-Bit 0x038adac
1a/1b/1c/1d 0x000000038af8c285 Single-Bit 0x038af8c
1a/1b/1c/1d 0x000000038b18c285 Single-Bit 0x038b18c
1a/1b/1c/1d 0x000000038b1ac285 Single-Bit 0x038b1ac
1a/1b/1c/1d 0x000000038b3ac285 Single-Bit 0x038b3ac
1a/1b/1c/1d 0x000000038b78c285 Single-Bit 0x038b78c
1a/1b/1c/1d 0x000000038b98c285 Single-Bit 0x038b98c
1a/1b/1c/1d 0x000000038bd8c285 Single-Bit 0x038bd8c
1a/1b/1c/1d 0x000000038bdac285 Single-Bit 0x038bdac
1a/1b/1c/1d 0x00000003903ac285 Single-Bit 0x03903ac
1a/1b/1c/1d 0x000000039afac285 Single-Bit 0x039afac
1a/1b/1c/1d 0x000000039f7ac285 Single-Bit 0x039f7ac
1a/1b/1c/1d 0x00000003bc1ac285 Single-Bit 0x03bc1ac
1a/1b/1c/1d 0x00000003bc38c285 Single-Bit 0x03bc38c
1a/1b/1c/1d 0x00000003bc58c285 Single-Bit 0x03bc58c
1a/1b/1c/1d 0x00000003bc98c285 Single-Bit 0x03bc98c
1a/1b/1c/1d 0x00000003bcf8c285 Single-Bit 0x03bcf8c
1a/1b/1c/1d 0x00000003bcfac285 Single-Bit 0x03bcfac
1a/1b/1c/1d 0x00000003bd18c285 Single-Bit 0x03bd18c
1a/1b/1c/1d 0x00000003bd1ac285 Single-Bit 0x03bd1ac
1a/1b/1c/1d 0x00000003bd58c285 Single-Bit 0x03bd58c
1a/1b/1c/1d 0x00000003bd5ac285 Single-Bit 0x03bd5ac
1a/1b/1c/1d 0x00000003bd78c285 Single-Bit 0x03bd78c
1a/1b/1c/1d 0x00000003bd9ac285 Single-Bit 0x03bd9ac
1a/1b/1c/1d 0x00000003bdd8c285 Single-Bit 0x03bdd8c
1a/1b/1c/1d 0x00000003be18c285 Single-Bit 0x03be18c
1a/1b/1c/1d 0x00000003be1ac285 Single-Bit 0x03be1ac
1a/1b/1c/1d 0x00000003be78c285 Single-Bit 0x03be78c
1a/1b/1c/1d 0x00000003be98c285 Single-Bit 0x03be98c
1a/1b/1c/1d 0x00000003bebac285 Single-Bit 0x03bebac
1a/1b/1c/1d 0x00000003bed8c285 Single-Bit 0x03bed8c
1a/1b/1c/1d 0x00000003bedac285 Single-Bit 0x03bedac
1a/1b/1c/1d 0x00000003bef8c285 Single-Bit 0x03bef8c
1a/1b/1c/1d 0x00000003befac285 Single-Bit 0x03befac
1a/1b/1c/1d 0x00000003bf1ac285 Single-Bit 0x03bf1ac
1a/1b/1c/1d 0x00000003bf38c285 Single-Bit 0x03bf38c
1a/1b/1c/1d 0x00000003bf3ac285 Single-Bit 0x03bf3ac
1a/1b/1c/1d 0x00000003bf78c285 Single-Bit 0x03bf78c
1a/1b/1c/1d 0x00000003bf98c285 Single-Bit 0x03bf98c
1a/1b/1c/1d 0x00000003bf9ac285 Single-Bit 0x03bf9ac
1a/1b/1c/1d 0x00000003bfb8c285 Single-Bit 0x03bfb8c
1a/1b/1c/1d 0x00000003bfbac285 Single-Bit 0x03bfbac
1a/1b/1c/1d 0x00000003bff8c285 Single-Bit 0x03bff8c
1a/1b/1c/1d 0x00000003bffac285 Single-Bit 0x03bffac
1a/1b/1c/1d 0x00000003c018c285 Single-Bit 0x03c018c
1a/1b/1c/1d 0x00000003c01ac285 Single-Bit 0x03c01ac
1a/1b/1c/1d 0x00000003c038c285 Single-Bit 0x03c038c
1a/1b/1c/1d 0x00000003c03ac285 Single-Bit 0x03c03ac
1a/1b/1c/1d 0x00000003c0dac285 Single-Bit 0x03c0dac
1a/1b/1c/1d 0x00000003c118c285 Single-Bit 0x03c118c
1a/1b/1c/1d 0x00000003c13ac285 Single-Bit 0x03c13ac
1a/1b/1c/1d 0x00000003c178c285 Single-Bit 0x03c178c
1a/1b/1c/1d 0x00000003c17ac285 Single-Bit 0x03c17ac
1a/1b/1c/1d 0x00000003c198c285 Single-Bit 0x03c198c
1a/1b/1c/1d 0x00000003c19ac285 Single-Bit 0x03c19ac
1a/1b/1c/1d 0x00000003c1dac285 Single-Bit 0x03c1dac
1a/1b/1c/1d 0x00000003c1f8c285 Single-Bit 0x03c1f8c
1a/1b/1c/1d 0x00000003c1fac285 Single-Bit 0x03c1fac
1a/1b/1c/1d 0x00000003c218c285 Single-Bit 0x03c218c
1a/1b/1c/1d 0x00000003c23ac285 Single-Bit 0x03c23ac
1a/1b/1c/1d 0x00000003c25ac285 Single-Bit 0x03c25ac
1a/1b/1c/1d 0x00000003c27ac285 Single-Bit 0x03c27ac
1a/1b/1c/1d 0x00000003c298c285 Single-Bit 0x03c298c
1a/1b/1c/1d 0x00000003c2d8c285 Single-Bit 0x03c2d8c
1a/1b/1c/1d 0x00000003c2dac285 Single-Bit 0x03c2dac
1a/1b/1c/1d 0x00000003c2fac285 Single-Bit 0x03c2fac
1a/1b/1c/1d 0x00000003c31ac285 Single-Bit 0x03c31ac
1a/1b/1c/1d 0x00000003c338c285 Single-Bit 0x03c338c
1a/1b/1c/1d 0x00000003c33ac285 Single-Bit 0x03c33ac
1a/1b/1c/1d 0x00000003c378c285 Single-Bit 0x03c378c
1a/1b/1c/1d 0x00000003c398c285 Single-Bit 0x03c398c
1a/1b/1c/1d 0x00000003c39ac285 Single-Bit 0x03c39ac
1a/1b/1c/1d 0x00000003c3bac285 Single-Bit 0x03c3bac
1a/1b/1c/1d 0x00000003c3d8c285 Single-Bit 0x03c3d8c
1a/1b/1c/1d 0x00000003c3dac285 Single-Bit 0x03c3dac
1a/1b/1c/1d 0x00000003c3fac285 Single-Bit 0x03c3fac
1a/1b/1c/1d 0x00000003cfd8c285 Single-Bit 0x03cfd8c
1a/1b/1c/1d 0x00000003dedac285 Single-Bit 0x03dedac
1a/1b/1c/1d 0x00000003e2fac285 Single-Bit 0x03e2fac
1a/1b/1c/1d 0x00000003e8dac285 Single-Bit 0x03e8dac
1a/1b/1c/1d 0x00000003fedac285 Single-Bit 0x03fedac
PDT Entries Used: 136
PDT Entries Free: 2864
PDT Total Size: 3000
-- Information Tool Log for MEMORY on path 8 --
View - To View the file.
Print - To Print the file.
SaveAs - To Save the file.
Enter Done, Help, Print, SaveAs, or View: [Done] #.
ipcs -b
ipcs -b
IPC status from /dev/kmem as of Mon Nov 10 11:36:26 2014
Message Queue facility not in system.
T ID KEY MODE OWNER GROUP SEGSZ
Shared Memory:
m 0 0x4120025a --rw-rw-rw- root root 348
m 1 0x4e000002 --rw-rw-rw- root root 61760
m 2 0x4124190b --rw-rw-rw- root root 8192
m 154115 0x00000000 --rw-r----- oracle dba 134217728
m 4 0x06347849 --rw-rw-rw- root root 65544
m 5 0x00a5c581 --rw------- sfmdb users 9101312
m 6 0x4918bc67 --rw-r--r-- root root 22908
m 7 0x5e1c2778 --rw------- root root 512
m 1544 0x00000000 --rw-r----- oracle dba 134217728
m 521 0x00000000 --rw-r----- oracle dba 134217728
m 522 0x00000000 --rw-r----- oracle dba 134217728
m 523 0x00000000 --rw-r----- oracle dba 134217728
m 12 0x00000000 --rw-r----- oracle dba 134217728
m 13 0x00000000 --rw-r----- oracle dba 134217728
m 14 0x00000000 --rw-r----- oracle dba 134217728
m 15 0x00000000 --rw-r----- oracle dba 134217728
m 16 0x00000000 --rw-r----- oracle dba 134217728
m 17 0x00000000 --rw-r----- oracle dba 134217728
m 18 0x00000000 --rw-r----- oracle dba 134217728
m 19 0x00000000 --rw-r----- oracle dba 134217728
m 20 0xc6975548 --rw-r----- oracle dba 1548288
T ID KEY MODE OWNER GROUP NSEMS
Semaphores:
s 0 0x4120025a --ra-ra-ra- root root 1
s 1 0x4e000002 --ra-ra-ra- root root 2
s 2 0x4124190b --ra-ra-ra- root root 2
s 3 0x00446f6e --ra-r--r-- root root 1
s 4 0x00446f6d --ra-r--r-- root root 1
s 5 0x01090522 --ra-r--r-- root root 1
s 6 0x61248990 --ra-ra-ra- root root 1
s 7 0x73248990 --ra-ra-ra- root root 1
s 8 0x70248990 --ra-ra-ra- root root 1
s 9 0x69248990 --ra-ra-ra- root root 1
s 10 0x75248990 --ra-ra-ra- root root 1
s 11 0x63248990 --ra-ra-ra- root root 1
s 12 0x64248990 --ra-ra-ra- root root 1
s 13 0x66248990 --ra-ra-ra- root root 1
s 14 0x6c248990 --ra-ra-ra- root root 1
s 15 0x6d248990 --ra-ra-ra- root root 1
s 16 0x6f248990 --ra-ra-ra- root root 1
s 17 0x31240580 --ra-ra-ra- root root 5
s 18 0x00a5c581 --ra------- sfmdb users 17
s 19 0x00a5c582 --ra------- sfmdb users 17
s 20 0x4918bc67 --ra-r--r-- root root 1
s 21 0x41000233 --ra-ra-ra- root root 1
s 22 0x00000001 --ra-ra-ra- root root 1
s 4119 0x52248990 --ra-ra-ra- root root 1
s 12312 0xa6aad5a4 --ra-r----- oracle dba 504
Peasant
November 10, 2014, 7:54am
11
Oracle suggest that dbc_max_pct should be a lot less then 50 (more like 5), in kernel setup for HPUX systems.
When it is 50, half of memory can be used by OS buffer cache.
Regards
Peasant.
1 Like
Usually Oracle processes start at system boot.
So Oracle processes steal the memory before the OS buffer cache can grow.
Therefore no need for tuning.
1 Like
vbe
November 10, 2014, 9:27am
14
50% was at the time when you were lucky to have more than 2GB RAM...
Plenty buffers is good- too much can be a pain... the best results is when dbc_max_pct does not exceed 2.5GB so in the present case that would be something like 8%
reducing dbc_min_pct makes sence when you have memory shortage - Not the case here but could be reduced to 4%..
The issue I see but you havent mentionned it happned yet is more :
" Why cant I load more programs (no more memory error message...) when I have far more RAM than what is actually used???"
This is more what could happen to you, why?
Because you are using pseudoswap... HP-UX ( at least 11.11 ) is a OS using Virtual memory, to make it simple it will load first in swap to "reserve" the space then load in memory, in case of need to swap the space already reserved is used so in practical you could have far more program running than actual RAM only system will be slow because using its swap...
Your case is your swap device is far less than actual RAM, with pswedo-swap was not activated you could actually only use at maximum memory to the size of your swap: 16GB when you have 24! so turning swapmem_on to 1 lets you use the excedent RAM as swap so you can use more than 16GB
But to be able in case of crisis ot use all the RAM at other things than swap, you would have to create a secind swap device for performace - of the same size of the one you have: 16 GB bring your system to have 32GB of virtual memory.
Having 2 of same size will bring the OS to use both simultaneously (like load balancing) if it needs to
About SGA buffers etc thinking to make them bigger will be better can lead to performance surprises...
I have been called by a bank years (more than 10...)ago when they had performance issues when changing to batch mode just like you I asked for a quick sysdef and how much RAM they had... I knew the type of disks (FWSCSI...) so I asked them if it was something like the system freezes so often say every1/4 1/2 hour for a couple of minutes...
They wanted to know how I knew... (a full buffer of 5 GB will take more than 4 minutes to sync with those disks - the bigger the buffer , the more time - and its not linear but more like exponential hehe)
I said we could tune the JFS but a good start was to compile a new kernel with new buffer values, then see how much it improved, it solved their issue...
As fo SGA I have seen SQL request 30% faster on systems with 50% less SGA -The same! To much buffers to scan when data is not there will slow the system when with less SGA it would already have gone reading the disks
You said you are on a SAN - The SAN normally has huge cache also, so why waste resource by using sequencially 3 huges buffers before actually going to access the disks?
rveri
November 10, 2014, 10:59am
15
vmstat 2 10 ##look if you hitting swapping, pi/po values should not be non-zero.
model ; swlist -l bundle | grep -e QPK -e GOLD
Have you patched the server to it's applicable patches, how old are the GOLD bundles.., This could lead to performance problem too if all of the above are ok.
1 Like
ssk250
November 11, 2014, 5:35am
16
model ; swlist -l bundle | grep -e QPK -e GOLD
9000/800/rp4440
GOLDAPPS11i B.11.11.0812.479 Applications Patches for HP-UX 11i v1, December 2008
GOLDBASE11i B.11.11.0812.479 Base Patches for HP-UX 11i v1, December 2008
ssk250
November 12, 2014, 7:00am
17
Will the memory assigned to Buffer cache(dbc_max_pct) can be used by normal process when required or else it will be reserved only for Buffer Cache itself?
How to check the amount of actual memory being used by buffer cache irrespective of the value(dbc_max_pct) assigned to it?
ssk250
November 13, 2014, 7:50am
18
I have checked other servers having the same OS,hardware and almost having same workload.Their buffer cache values are as below. Their utilizations are < 40%. So I hope this buffer cache may be the culprit for displaying high utilization.
Thanks for everyone for your help in this. I cant say this was closed but hope that this may help to close this problem. Let's see what happens if these values are changed.
Parameter Current Dyn Planned Module Version
===============================================================================
dbc_max_pct 9 - 9
dbc_min_pct 5 - 5
vbe
November 13, 2014, 8:23am
19
Almost what I sugested in post#14 hehe
My concern is you CSTM output... when was last reboot? after next reboot think too look at cstm / memory to see if the errors are getting worse, if the case the 2GB rAM in slot 1B may need to be changed, but dont worry if he system finds it too bad it will reboot on its own and unconfigure the faulty RAM... ( I wonder if it hasnd already done so... but I have no more HP to see...).
Do teh other boxes have swapmem_on set to 1 ?
1 Like
ssk250
November 14, 2014, 6:42am
20
Yes the swapmem_on was set to 1 on other machines too.
It was last rebooted @224 days before
uptime
11:38am up 224 days, 5:44, 1 user, load average: 0.06, 0.05, 0.04
As I already asked before can you explain about these queries
Will the memory assigned to Buffer cache(dbc_max_pct) can be used by normal process when required or else it will be reserved only for Buffer Cache itself?
How to check the amount of actual memory being used by buffer cache irrespective of the value(dbc_max_pct) assigned to it?