The applications on all those servers are same. They are working on same data. I still don't know why the size of buff/cache is different between different servers.
At 2021-03-12 16:35:09, "Simon Matter" simon.matter@invoca.ch wrote:
Hi,
You said that you have multiple systems running this same application. But, do they work with the same data on disk or are there big differences?
From how I understand the figures below, your buff/cache seems a bit low if you read a lot of data from disk. If you read a lot of data and filesystem caches are slow, it will result in heavy reading from disk directly.
One more thing comes to mind: is your hardware behaving fine? I mean, if your storag has difficulties to read data from disk due to hardware issues, this could also lead to such problems you're facing.
Regards, Simon
yes. I suspect it has something to do with swapping. but swap is turned off on this server. here is the result of free -m. total used free shared buff/cache available Mem: 128174 97449 24400 4158 6325 25232 Swap: 0 0 0
We have other servers. The processes running on these servers are same. but on other servers, the size of buff/cache is larger than the size on the server which experienced the problem and the size of "free" is smaller than the size on the server which experienced the problem.
�� 2021-03-10 14:30:00��"Thomas Stephen Lee" lee.iitb@gmail.com ���
On Sat, Mar 6, 2021 at 6:37 AM yf chu cyflhn@163.com wrote:
no, not vm
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On 03/05/2021 23:37, Matthew Miller wrote: On Fri, Mar 05, 2021 at 03:54:14PM +0800, yf chu wrote:
We have experienced a very weird problem. The load of the server
machine is very high. We use "pidstat" and find that the disk read io is very high.
Is this system a VM?
-- Matthew Miller mattdm@fedoraproject.org Fedora Project Leader
Hi,
Is this due to swapping?
what is the output of
free -m
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