Thanks Matt. I can confirm our issue is completely gone and performance
is back with 5.4.0-146-generic.
Alfredo
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https://bugs.launchpad.net/bugs/2009882
Title:
Linux
Hi Christian, Alfredo,
5.4.0-146-generic was released yesterday with a fix for the NFS
regression, and it should have less bandwidth consumption than
5.4.0-144-generic.
There is still some reports that it still has higher NFS requests than
before the regression was introduced, so please chime in
Hi Matthew,
yes we do have NFSv3 in our environment and mostly all PHP requests pull
files sitting in network storage. However "waiting access" (wa)
indicator is close to zero while inspecting "top".
In the past when we had had issues with NFS3 most processes slow down
while waiting for I/O thus
we have the same issue with this kernel, but also with NFSv4
thanks,
Christian
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Title:
Linux 5.4.0-144-generic x86_64 multithread
Hi Alfredo,
Do you happen to use NFSv3 in your environment? There was a regression
in 5.4.0-144-generic that cased a massive spike in ACCESS requests being
made, which could explain low performance.
bug 2009325
Thanks,
Matthew
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