hi, I have done the below, but am confused as to how much memory is "free"
please help
thanks
$ free
total used free shared buffers cached
Mem: 132033488 48827536 83205952 0 1007696 45404632
-/+ buffers/cache: 2415208 129618280
Swap: 134217720 0 134217720
The numbers under the free column
first number: free memory
buffers : can be freed quickly
swap : virtual memory
Total free memory = free memory + unused swap. When memory gets short the OS will
release some cache memory as well.
Your system is in great shape memory-wise. I don't see a problem.
thanks for the reply.
ok, so I am using 48G and have 83G free. But what does the buffers and cache columns tell me?
Also, the row:
-/+ buffers/cache: 2415208 129618280
is confusing me
thanks
quan0509:
Using
free -m
with MB formatting
sorry, im not sure how this answers my question
elaborate?
From the free man page:
This answers your question - free thinks buffer memory is really free memory. Which is what I explained above.
Free means it is not absolutely required by an active process. The kernel uses 'extra' memory to facilitate operations - like I/O. Those are the buffers in question. It is kind of like luxury uptake of an unrequired resource, if that makes more sense to you.
What are you trying to figure out?
From the free man page:
This answers your question - free thinks buffer memory is really free memory. Which is what I explained above.
Free means it is not absolutely required by an active process. The kernel uses 'extra' memory to facilitate operations - like I/O. Those are the buffers in question. It is kind of like luxury uptake of an unrequired resource, if that makes more sense to you.
What are you trying to figure out?
thanks jim, i think i get it now, if not, i will post again
mark54g
October 28, 2009, 11:58pm
8
also see:
vmstat -sa -S M | grep memory