From: Martin Steigerwald <martin@lichtvoll.de>
To: linux-btrfs@vger.kernel.org, Tim Cuthbertson <ratcheer@gmail.com>
Subject: Re: Scrub of my nvme SSD has slowed by about 2/3
Date: Tue, 11 Jul 2023 07:52:29 +0200 [thread overview]
Message-ID: <2890794.e9J7NaK4W3@lichtvoll.de> (raw)
In-Reply-To: <2149714.irdbgypaU6@lichtvoll.de>
Martin Steigerwald - 11.07.23, 07:49:43 CEST:
> I see about 180000 reads in 10 seconds in atop. I have seen latency
> values from 55 to 85 µs which is highly unusual for NVME SSD ("avio"
> in atop¹).
Well I did not compare to a base line during scrub with 6.3. So not
actually sure about the unusual bit. But at least during daily activity
I do not see those values.
Anyway, I am willing to test a patch.
> [1] according to man page atop(1) from atop 2.9:
>
> the average number of milliseconds needed by a request ('avio') for
> seek, latency and data transfer
--
Martin
next prev parent reply other threads:[~2023-07-11 5:52 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-03 20:19 Scrub of my nvme SSD has slowed by about 2/3 Tim Cuthbertson
2023-07-03 23:49 ` Qu Wenruo
2023-07-05 2:44 ` Qu Wenruo
2023-07-11 5:36 ` Martin Steigerwald
2023-07-11 5:33 ` Martin Steigerwald
2023-07-11 5:49 ` Martin Steigerwald
2023-07-11 5:52 ` Martin Steigerwald [this message]
2023-07-11 8:59 ` Qu Wenruo
2023-07-11 9:25 ` Martin Steigerwald
2023-07-11 9:57 ` Qu Wenruo
2023-07-11 10:56 ` Martin Steigerwald
2023-07-11 11:05 ` Qu Wenruo
2023-07-11 11:26 ` Martin Steigerwald
2023-07-11 11:33 ` Qu Wenruo
2023-07-11 11:47 ` Martin Steigerwald
2023-07-14 0:28 ` Qu Wenruo
2023-07-14 6:01 ` Qu Wenruo
2023-07-14 6:58 ` Martin Steigerwald
2023-07-16 9:57 ` Sebastian Döring
2023-07-16 10:55 ` Qu Wenruo
2023-07-16 16:01 ` Sebastian Döring
2023-07-17 5:23 ` Qu Wenruo
2023-07-12 11:02 ` Linux regression tracking #adding (Thorsten Leemhuis)
2023-07-19 6:42 ` Martin Steigerwald
2023-07-19 6:55 ` Martin Steigerwald
2023-08-29 12:17 ` Linux regression tracking #update (Thorsten Leemhuis)
2023-09-08 11:54 ` Martin Steigerwald
2023-09-08 22:03 ` Qu Wenruo
2023-09-09 8:06 ` Martin Steigerwald
2023-10-13 13:07 ` Martin Steigerwald
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