xfs within one hour after power-on reset , nginx performance is poor and do not have this phenomenon on ext4

xfs within one hour after power-on reset , nginx performance is poor and do not have this phenomenon on ext4

[Linpeimin]

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Hello , we use xfs file system to test nginx , I found the power-on reset , within the first one hour nginx relatively poor performance, and after one hour , re- test , performance result( RPS) of dynamic pages has improved.If we change the file system into ext4, you do not have this phenomenon , after the start,RPS performance has remained stable.
At present it is difficult for us to explain this phenomenon.I hope I can get your support and answers , very grateful !






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Re: xfs within one hour after power-on reset , nginx performance is poor and do not have this phenomenon on ext4

[Eric Sandeen]

There is not enough information here to begin considering your
problem report.

http://xfs.org/index.php/XFS_FAQ#Q:_What_information_should_I_include_when_reporting_a_problem.3F

I'm not even sure I understand what you have stated so far; you see
the RPS (requests per second) increase after the system has been up
for one hour, is that correct?

In any case, we aren't nginx experts here; you will need to do more
investigation to find out what is actually happening at the filesystem
level before we can be of much help, I think.

-Eric

On 12/21/15 1:09 AM, Linpeimin wrote:
> Hello , we use xfs file system to test nginx , I found the power-on
> reset , within the first one hour nginx relatively poor performance,
> and after one hour , re- test , performance result( RPS) of dynamic
> pages has improved.If we change the file system into ext4, you do not
> have this phenomenon , after the start,RPS performance has remained
> stable.

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