Help with iostat ...

Applications Filesystems, Disks and Memory
1

All,

I am attempting to help tune a Sun for better performance (mainly for SAS 9.1), and have found indicators pointing to poor I/O utilization. I have run iostat -cx, and found one device in particular where the %w is in the 90's during processing. I have a feeling that this is where the SAS temporary file are held, but I am not sure how to check to make sure.

So, how can I see what directories are on this device (oh, and I do not have root access).

Can anyone offer any tips/tricks for tuning in this situation?

Thank you very much for any help.

2

So, how can I see what directories are on this device (oh, and I do not have root access).

for this and without root access you can use the
iostat -xnp
command!

And then merge it with the output of
df -hV and
swap -l

I hope this can help you!

Best regards
joerg

3

Joerg,

I tried iostat -xnp, but get a "permission denied" error for the '-n' part. Any other ideas?

Thank!

4

My system accept the command as normal
system user. Without root access.
Please ask our system administrator and ore use the direct path to the command.
/usr/bin/iostat
It is possible that you use an alias.
best regards
joerg