Re: [Xen-users] How could I find memory hogging process in Dom0?

[Phil Susi <psusi@xxxxxxxxxx>]

On 3/23/2018 1:00 AM, Minjun Hong wrote:
> Thanks for your answer, Christopher and Phil.
> I also know that it is better to use the free memory as cache for file
> backed data or buffer rather than just leave it unused as you mentioned.
> 
> However, this is happening all the time, even if I reboot the machines.
> And it causes performance degradation of B. So I need to find some way to
> resolve this problem.

The cache isn't causing a performance degradation, but it may be another
symptom of what is.  You may have a process doing a lot of disk IO, such
as an updatedb on a very large filesystem.  That would fill the cache
with data and reduce the IO available to other tasks.  Take a look at iotop.


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