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How can I tell the kernel to free cached memory during memory allocation request instead of the OOM killer terminating the application

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http://serverfault.com – I am running Ubuntu 10.04 with the below kernel version Linux ip-10-0-1-119 2.6.32-343-ec2 #45-Ubuntu SMP Tue Feb 14 18:18:17 UTC 2012 x86_64 GNU/Linux The memory status shows that the cache is using the maximum share of the RAM. ubuntu@ip-10-0-1-12:~$ free -m total used free shared buffers cached Mem: 7702 7657 44 0 24 6137 -/+ buffers/cache: 1494 6207 Swap: 0 0 0 I understand that the OS manages it automatically and keeps the maximum share of RAM in the cache to (HowTos)

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Submitted by taskli on 03/15/2012 – Made popular on 03/15/2012

Stories similar to How can I tell the kernel to free cached memory during memory allocation request instead of the OOM killer terminating the application

In my Ubuntu 11.10 VPS, Before I run the jar file:

# free -m total used free shared buffers cached Mem: 256 5 250 0 0 0 -/+ buffers/cache: 5 250 Swap: 0 0 0

Run a jar file that limited to maximum of 32M memory:

java -Xms8m -Xmx32m -jar ./my.jar

Now the memory

can anyone tell me where the memory is gone: (no, this time neither buffers nor cache)

# free total used free shared buffers cached Mem: 3928200 3868560 59640 0 2888 92924 -/+ buffers/cache: 3772748 155452 Swap: 4192956 226352 3966604

top, sorted by memory, descending:

top - 13:42:06 up 1 day, 3:47, 2 u

I have an issue where when I try to build a really large project, my machine starts swapping (several GB) even though there's plenty of memory (14 GB in fact).

we have a server with 8GB, running mysql, 4 java applications and a small postgres db.

Can you help me understand what is taking memory on my linux box?

When I run free command I see the following picture (14GB are used, 10GB are free):

total used free shared buffers cached Mem: 24724636 14428580 10296056 0 699100 7763272 -/+ buffers/cache: 5966208 18758428 Swap: 26836984 20776 26816208

But when I run t

I have two servers, server1 and server2. Both of them are identical HP blades, running the exact same OS (RHEL 5.5).

Memory usage debugging 1 year 15 weeks ago

I have a Java program running on my Ubuntu 10.04 machine that makes tens of thousands of DB queries and creates tens of thousands of files.

i would like to get the value -/+ buffers/cache used who is 212, how can i do this? i have free -m | grep -i mem | awk '{ print $2 }' for get value of total memory

total used free shared buffers cached Mem: 7972 1237 6735 0 465 558 -/+ buffers/cache: 212 7760 Swap: 8001 0

I'm operating a little storage server on debian, over the past months I've noticed the process udisks-daemon eating up almost all available memory.

Is this just really aggressive caching or a memory leak?

uname -a Linux Proto 2.6.32-5-amd64 #1 SMP Sun May 6 04:00:17 UTC 2012 x86_64 GNU/Linux

free -m total used free shared buffers cached Mem: 7999