From: Zdenek Kabelac <zkabelac@redhat.com>
To: dm-devel@redhat.com
Subject: Re: mirrored device with thousand of mappingtableentries
Date: Mon, 28 Feb 2011 14:38:46 +0100 [thread overview]
Message-ID: <4D6BA566.1050305@redhat.com> (raw)
In-Reply-To: <E04C10E329E0CD40816C9C17AE53BBD301863A00@kit001.kaminario.local>
Dne 28.2.2011 14:13, Eli Malul napsal(a):
>
> OK, I will try that and check the implications of that, thanks!!
>
> But, do you know why having 10,000 extents is causing this overwhelming
> memory usage?
>
If you really need that many devices - be also sure
you have disabled this kernel config option:
CONFIG_BLK_DEV_INTEGRITY
For some reason it consumes massive amount of memory.
Other than that - you should count with 64KB per device usually.
Zdenek
next prev parent reply other threads:[~2011-02-28 13:38 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-28 11:21 mirrored device with thousand of mapping table entries Eli Malul
2011-02-28 11:48 ` Alasdair G Kergon
2011-02-28 11:59 ` mirrored device with thousand of mapping tableentries Eli Malul
2011-02-28 12:11 ` Alasdair G Kergon
2011-02-28 12:17 ` mirrored device with thousand of mappingtableentries Eli Malul
2011-02-28 13:10 ` Alasdair G Kergon
2011-02-28 13:13 ` Eli Malul
2011-02-28 13:29 ` Alasdair G Kergon
2011-02-28 13:42 ` Eli Malul
2011-02-28 16:25 ` Eli Malul
2011-02-28 13:38 ` Zdenek Kabelac [this message]
2011-02-28 15:01 ` Martin K. Petersen
2011-03-06 20:39 ` Zdenek Kabelac
2011-03-07 2:59 ` Martin K. Petersen
2011-03-07 14:24 ` Zdenek Kabelac
2011-03-07 16:09 ` Mike Snitzer
2011-03-08 6:51 ` Martin K. Petersen
2011-03-08 17:13 ` Mike Snitzer
2011-03-10 16:11 ` Martin K. Petersen
2011-03-11 16:53 ` [PATCH] block: Require subsystems to explicitly allocate bio_set integrity mempool (was: Re: mirrored device with thousand of mappingtableentries) Mike Snitzer
2011-03-11 17:11 ` [PATCH] block: Require subsystems to explicitly allocate bio_set integrity mempool Martin K. Petersen
2011-03-07 20:10 ` mirrored device with thousand of mappingtableentries Mike Snitzer
2011-03-07 20:22 ` Martin K. Petersen
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=4D6BA566.1050305@redhat.com \
--to=zkabelac@redhat.com \
--cc=dm-devel@redhat.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