From: Erwan Velu <e.velu@criteo.com>
To: Hans-Peter Lehmann <hans-peter.lehmann@kit.edu>,
"fio@vger.kernel.org" <fio@vger.kernel.org>
Subject: Re: Question: t/io_uring performance
Date: Mon, 6 Sep 2021 16:41:25 +0200 [thread overview]
Message-ID: <913de849-057b-cabd-49fb-1123f3d58eb6@criteo.com> (raw)
In-Reply-To: <77b67cc0-30c1-70a8-438b-f1bcf1fdb295@kit.edu>
Le 06/09/2021 à 16:26, Hans-Peter Lehmann a écrit :
> Hi Jens,
>
> not sure if you have read the emails in this thread - now trying to
> address you directly. Both Erwan and me are unable to reproduce your
> single-threaded IOPS measurements - we don't even get close to your
> numbers. The bottle-neck seems to be the CPU, not the SSDs. Did you
> use some special configuration for your benchmarks?
>
> Best regards
> Hans-Peter
>
> (I have also reproduced the behavior with an Intel processor now - the
> single-threaded throughput is also capped at around 580k IOPS, even
> though the SSDs can handle more than that when using multiple threads)
I wonder if that's not linked to the optane 2 setup.
next prev parent reply other threads:[~2021-09-06 14:41 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-25 15:57 Question: t/io_uring performance Hans-Peter Lehmann
2021-08-26 7:27 ` Erwan Velu
2021-08-26 15:57 ` Hans-Peter Lehmann
2021-08-27 7:20 ` Erwan Velu
2021-09-01 10:36 ` Hans-Peter Lehmann
2021-09-01 13:17 ` Erwan Velu
2021-09-01 14:02 ` Hans-Peter Lehmann
2021-09-01 14:05 ` Erwan Velu
2021-09-01 14:17 ` Erwan Velu
2021-09-06 14:26 ` Hans-Peter Lehmann
2021-09-06 14:41 ` Erwan Velu [this message]
2021-09-08 11:53 ` Sitsofe Wheeler
2021-09-08 12:22 ` Jens Axboe
2021-09-08 12:41 ` Jens Axboe
2021-09-08 16:12 ` Hans-Peter Lehmann
2021-09-08 16:20 ` Jens Axboe
2021-09-08 21:24 ` Hans-Peter Lehmann
2021-09-08 21:34 ` Jens Axboe
2021-09-10 11:25 ` Hans-Peter Lehmann
2021-09-10 11:45 ` Erwan Velu
2021-09-08 12:33 ` Jens Axboe
2021-09-08 17:11 ` Erwan Velu
2021-09-08 22:37 ` Erwan Velu
2021-09-16 21:18 ` Erwan Velu
2021-09-21 7:05 ` Erwan Velu
2021-09-22 14:45 ` Hans-Peter Lehmann
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