N
nerdalert
OK, we have a RHEL 5.6 server that is behaving very strangely. It runs in VMware, and has 16GB 'physical' RAM assigned to it.
As soon as it boots, the OS is automatically grabbing 12GB out of the 16GB it has allocated to it, and we cannot figure out what is causing this to happen. This of course prevents us from being able to start any of our applications.
It even does this when we boot to single-user mode.
It is not disk caching, as we have already cleared that. Here's what we see:
[servertst01 ~]# free -m
total used free shared buffers cached
Mem: 16050 12645 3405 0 19 201
-/+ buffers/cache: 12425 3625
Swap: 10239 0 10239
How can we figure out what is grabbing this RAM? I'm guessing it's some kind of kernel parameter or something, but I'm not sure how to track it down.
Thank you in advance for any advice.
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As soon as it boots, the OS is automatically grabbing 12GB out of the 16GB it has allocated to it, and we cannot figure out what is causing this to happen. This of course prevents us from being able to start any of our applications.
It even does this when we boot to single-user mode.
It is not disk caching, as we have already cleared that. Here's what we see:
[servertst01 ~]# free -m
total used free shared buffers cached
Mem: 16050 12645 3405 0 19 201
-/+ buffers/cache: 12425 3625
Swap: 10239 0 10239
How can we figure out what is grabbing this RAM? I'm guessing it's some kind of kernel parameter or something, but I'm not sure how to track it down.
Thank you in advance for any advice.
Continue reading...