From: Wang Yugui <wangyugui@e16-tech.com>
To: linux-xfs@vger.kernel.org
Subject: dbench throughput on xfs over hardware limit(6Gb/s)
Date: Tue, 13 Oct 2020 22:11:13 +0800 [thread overview]
Message-ID: <20201013221113.F0A0.409509F4@e16-tech.com> (raw)
Hi,
dbench throughput on xfs over hardware limit(6Gb/s=750MB/s).
Is this a bug or some feature of performance optimization?
Disk: TOSHIBA PX05SMQ040
This is a 12Gb/s SAS SSD disk, but connect to 6Gb/s SAS HBA,
so it works with 6Gb/s.
dbench -s -t 60 -D /xfs 32
#Throughput 884.406 MB/sec (sync open)
dbench -s -t 60 -D /xfs 1
#Throughput 149.172 MB/sec (sync open)
we test the same disk with ext4 filesystem,
the throughput is very close to, but less than the hardware limit.
dbench -s -t 60 -D /ext4 32
#Throughput 740.95 MB/sec (sync open)
dbench -s -t 60 -D /ext4 1
#Throughput 124.67 MB/sec (sync open)
linux kernel: 5.4.70, 5.9.0
Best Regards
王玉贵
2020/10/13
--------------------------------------
北京京垓科技有限公司
王玉贵 wangyugui@e16-tech.com
电话：+86-136-71123776
next reply other threads:[~2020-10-13 14:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-13 14:11 Wang Yugui [this message]
2020-10-13 23:05 ` dbench throughput on xfs over hardware limit(6Gb/s) Dave Chinner
2020-10-14 3:32 ` Wang Yugui
2020-10-14 21:24 ` Dave Chinner
2020-10-14 22:43 ` Wang Yugui
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