ALT Linux Community general discussions
 help / color / mirror / Atom feed
From: Dmitriy Kruglikov <dmitriy.kruglikov@gmail.com>
To: shigorin@gmail.com,
	 ALT Linux Community general discussions
	<community@lists.altlinux.org>
Subject: Re: [Comm] Производительность
Date: Mon, 30 Jul 2012 09:41:11 +0300
Message-ID: <CAC4WpAxmud7mZ5sWsJB4eq_DZ2+8Xwa_QQ=-intqpwqVM5Nc2w@mail.gmail.com> (raw)
In-Reply-To: <20120730060657.GC31323@osdn.org.ua>

30 июля 2012 г., 9:06 пользователь Michael Shigorin <mike@osdn.org.ua> написал:

> Всё же /sys/block/sd?/queue/scheduler

Взгрустнулось... Поигрался...

Имеем raid1 ...
/dev/md5 on /opt type ext4
(rw,nosuid,nodev,relatime,barrier=0,nodelalloc,data=writeback)

# cat /sys/block/sda/queue/scheduler
noop anticipatory deadline [cfq]
# cat /sys/block/sdb/queue/scheduler
noop anticipatory deadline [cfq]

Тестовое задание:
# dd if=/dev/zero bs=1M count=5000 of=./zero.dd
Для cfq
LA ~ 3,2
5242880000 bytes (5.2 GB) copied, 55.0603 s, 95.2 MB/s

Для noop
LA ~ 6,02
5242880000 bytes (5.2 GB) copied, 62.1367 s, 84.4 MB/s

Для deadline
LA ~ 3,7
5242880000 bytes (5.2 GB) copied, 46.8136 s, 112 MB/s

Для anticipatory
LA ~ 2,2
5242880000 bytes (5.2 GB) copied, 47.8624 s, 110 MB/s

До отрывания bimap  и при data=ordered
тестовое задание выполнялось со скоростью ~ 43 MB/s при LA ~ 10-12 ...

Может быть кто-то где-то как-то почерпнет для себя "О пользе
правильных defaults"...
;)

-- 
Best regards,
 Dmitriy Kruglikov.
    QString at, dot, mail, XMPP;
    at = "@";
    dot = ".";
    mail = "Dmitriy.Kruglikov" + $at +"gmail" + $dot + "com";
    XMPP = $mail;


  reply	other threads:[~2012-07-30  6:41 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-28 10:40 Vladimir Karpinsky
2012-07-28 10:57 ` vx8400
2012-07-28 11:08   ` Dmitriy Kruglikov
2012-07-28 11:32     ` Vladimir Karpinsky
2012-07-28 11:37       ` Dmitriy Kruglikov
2012-07-28 11:47         ` Vladimir Karpinsky
2012-07-28 13:02           ` Dmitriy Kruglikov
2012-07-28 13:41             ` Vladimir Karpinsky
2012-07-28 17:20             ` Vladimir Karpinsky
2012-07-30  6:49             ` Michael Shigorin
2012-07-30  6:53               ` Dmitriy Kruglikov
2012-07-30  8:06               ` Vladimir Karpinsky
2012-07-30 13:18                 ` Michael Shigorin
2012-07-30 14:39                   ` Vladimir Karpinsky
2012-07-28 13:04           ` Vladimir Karpinsky
2012-07-29  0:36             ` Alexei Takaseev
2012-07-30  5:40               ` Anton Gorlov
2012-07-30  6:06                 ` Michael Shigorin
2012-07-30  6:41                   ` Dmitriy Kruglikov [this message]
2012-07-30 11:24                   ` adobrovolskii
2012-07-30 11:32                     ` Michael Shigorin
2012-07-30 12:14                       ` adobrovolskii
2012-07-30 16:27                         ` Dmitry Chistikov
2012-07-31  7:38                           ` adobrovolskii
2012-07-30 11:34                     ` Dmitriy Kruglikov
2012-07-30  6:41 ` Michael Shigorin

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='CAC4WpAxmud7mZ5sWsJB4eq_DZ2+8Xwa_QQ=-intqpwqVM5Nc2w@mail.gmail.com' \
    --to=dmitriy.kruglikov@gmail.com \
    --cc=community@lists.altlinux.org \
    --cc=shigorin@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

ALT Linux Community general discussions

This inbox may be cloned and mirrored by anyone:

	git clone --mirror http://lore.altlinux.org/community/0 community/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 community community/ http://lore.altlinux.org/community \
		mandrake-russian@linuxteam.iplabs.ru community@lists.altlinux.org community@lists.altlinux.ru community@lists.altlinux.com
	public-inbox-index community

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://lore.altlinux.org/org.altlinux.lists.community


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git