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From: Wang Yugui <wangyugui@e16-tech.com>
To: Dave Chinner <david@fromorbit.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: dbench throughput on xfs over hardware limit(6Gb/s)
Date: Thu, 15 Oct 2020 06:43:40 +0800	[thread overview]
Message-ID: <20201015064339.35D4.409509F4@e16-tech.com> (raw)
In-Reply-To: <20201014212458.GC7391@dread.disaster.area>

Hi,

> Reads can still be served from the page cache without doing physical
> IO.

You are right.

for ext4, with more clients(32->80),  the Throughput of ext4 is over
6Gb/s too.

the 'Throughput' of dbench include not only 'write', but also include
'read' in dbench too.

And 'max_latency' include not only 'write', but also include others too.

1)dbench result example1
WriteX        365460     4.474  2279.808
...
Throughput 385.697 MB/sec (sync open)  32 clients  32 procs  max_latency=2279.818 ms

2)dbench result example2
 WriteX        741543     3.521    16.380
 ...
Throughput 779.972 MB/sec (sync open)  48 clients  48 procs  max_latency=11.246 ms

Thanks a lot.

Best Regards
Wang Yugui (wangyugui@e16-tech.com)
2020/10/15



      reply	other threads:[~2020-10-14 22:43 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-13 14:11 dbench throughput on xfs over hardware limit(6Gb/s) Wang Yugui
2020-10-13 23:05 ` Dave Chinner
2020-10-14  3:32   ` Wang Yugui
2020-10-14 21:24     ` Dave Chinner
2020-10-14 22:43       ` Wang Yugui [this message]

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