From: Roman Mamedov <rm@romanrm.net>
To: Joe Landman <joe.landman@gmail.com>
Cc: CoolCold <coolthecold@gmail.com>,
Adam Goryachev <mailinglists@websitemanagers.com.au>,
Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: RAID10 performance with 20 drives
Date: Wed, 31 May 2017 19:18:50 +0500 [thread overview]
Message-ID: <20170531191850.5c7ba616@natsu> (raw)
In-Reply-To: <87cf573c-775c-ee32-1beb-d45702434366@gmail.com>
On Wed, 31 May 2017 10:07:50 -0400
Joe Landman <joe.landman@gmail.com> wrote:
> procs -----------memory---------- ---swap-- -----io---- -system--
> ------cpu-----
> r b swpd free buff cache si so bi bo in cs us sy
> id wa st
> 3 0 0 130058176 2412 500660 0 0 0 0 3 17 0
> 2 98 0 0
> 1 0 0 130057352 2412 501012 0 0 0 0 28827 69339
> 0 3 97 0 0
>
> 3rd from right is % idle.
>
> This is 95-98% idle. Is the rebuild done?
It's a 40-core CPU with one core completely maxed out into 100% use with some
non-multithreaded load from md. Yes, 100% use of one core on a 40-core CPU
will show up as ~97% idle overall. Take a closer look at all the data
presented.
--
With respect,
Roman
next prev parent reply other threads:[~2017-05-31 14:18 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-31 12:20 RAID10 performance with 20 drives CoolCold
2017-05-31 12:36 ` Joe Landman
2017-05-31 13:14 ` Adam Goryachev
2017-05-31 13:32 ` David Brown
2017-05-31 13:57 ` CoolCold
2017-05-31 14:07 ` Joe Landman
2017-05-31 14:18 ` Roman Mamedov [this message]
2017-05-31 14:35 ` Joe Landman
2017-05-31 14:14 ` Roman Mamedov
2017-06-01 5:59 ` CoolCold
2017-06-01 6:33 ` Pasi Kärkkäinen
2017-06-01 11:20 ` Roger Heflin
[not found] ` <CAMNNMLEuutwLE8xft+ZEo=ShxRP=rJEq1kzNtVbgE5RBTOYcrQ@mail.gmail.com>
2017-06-05 9:52 ` CoolCold
2017-06-05 11:34 ` Pasi Kärkkäinen
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