[TriLUG] Growing OS cache in RAM causing high system CPU usage

[Daniel Sterling]

To find out if it really is OS caches causing issues, you can cat
something in somewhere in proc to have linux drop all its caches. Umm
lemme google what that is

OK yeah run this to find out if the cache is really what's causing this:

while [[ 1 ]] ; do echo 1 | sudo tee /proc/sys/vm/drop_caches ; sleep 1 ; done

-- Dan


On Tue, Jul 8, 2014 at 12:49 PM, Daniel Sterling
<sterling.daniel at gmail.com> wrote:
> do you have a swap partition set up; look like no?
>
> This behaviour sounds like what happens when a box has used up all its
> RAM and swap.
>
> Try making OOM killer more aggressive and/or disabling overcommit
> and/or adding swap
>
> -- Dan
>
> On Tue, Jul 8, 2014 at 11:51 AM, Michael Peters
> <michael00peters at gmail.com> wrote:
>> Just a question I asked on Server Fault that hasn't been answered that
>> I thought people on this list might be able to help with:
>>
>> http://serverfault.com/questions/610756/growing-os-cache-in-ram-causing-high-system-cpu-usage
>>
>> Thanks,
>> --
>> Michael Peters
>> --
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