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Re: xfs within one hour after power-on reset , nginx performance is poor

To: xfs@xxxxxxxxxxx
Subject: Re: xfs within one hour after power-on reset , nginx performance is poor and do not have this phenomenon on ext4
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Mon, 21 Dec 2015 12:25:33 -0600
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <11FA37A582DFC847A21131D4B69D8B495AA49849@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
References: <11FA37A582DFC847A21131D4B69D8B495AA49849@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:38.0) Gecko/20100101 Thunderbird/38.4.0
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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