From: Dave Chinner <david@fromorbit.com>
To: mikhail <mikhail.v.gavrilov@gmail.com>
Cc: "linux-xfs@vger.kernel.org" <linux-xfs@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: freezing system for several second on high I/O [kernel 4.15]
Date: Thu, 15 Feb 2018 08:52:45 +1100 [thread overview]
Message-ID: <20180214215245.GI7000@dastard> (raw)
In-Reply-To: <1518643669.6070.21.camel@gmail.com>
On Thu, Feb 15, 2018 at 02:27:49AM +0500, mikhail wrote:
> On Mon, 2018-02-12 at 09:56 +1100, Dave Chinner wrote:
> > IOWs, this is not an XFS problem. It's exactly what I'd expect
> > to see when you try to run a very IO intensive workload on a
> > cheap SATA drive that can't keep up with what is being asked of
> > it....
> >
>
> I am understand that XFS is not culprit here. But I am worried
> about of interface freezing and various kernel messages with
> traces which leads to XFS. This is my only clue, and I do not know
> where to dig yet.
I've already told you the problem: sustained storage subsystem
overload. You can't "tune" you way around that. i.e. You need a
faster disk subsystem to maintian the load you are putting on your
system - either add more disks (e.g. RAID 0/5/6) or to move to SSDs.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2018-02-14 21:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-30 18:40 freezing system for several second on high I/O [kernel 4.15] mikhail
2018-01-31 2:22 ` Dave Chinner
2018-02-05 3:25 ` mikhail
2018-02-06 3:47 ` mikhail
2018-02-06 6:08 ` Dave Chinner
2018-02-06 7:12 ` Mikhail Gavrilov
2018-02-07 3:40 ` mikhail
2018-02-07 6:55 ` Dave Chinner
2018-02-10 9:34 ` mikhail
2018-02-10 9:35 ` mikhail
2018-02-11 22:56 ` Dave Chinner
2018-02-14 21:27 ` mikhail
2018-02-14 21:52 ` Dave Chinner [this message]
2018-02-15 3:40 ` mikhail
2018-02-15 3:42 ` mikhail
2018-02-15 3:46 ` Matthew Wilcox
2018-02-15 5:44 ` Dave Chinner
2018-02-15 19:02 ` Mikhail Gavrilov
2018-02-15 21:48 ` Dave Chinner
2018-02-18 14:02 ` Mikhail Gavrilov
2018-02-19 5:02 ` Dave Chinner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180214215245.GI7000@dastard \
--to=david@fromorbit.com \
--cc=linux-mm@kvack.org \
--cc=linux-xfs@vger.kernel.org \
--cc=mikhail.v.gavrilov@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).