LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Jerome Marchand <jmarchan@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Nitin Gupta <ngupta@vflare.org>
Subject: Re: [PATCH 1/2] zram: free meta out of init_lock
Date: Wed, 28 Jan 2015 15:08:25 +0900	[thread overview]
Message-ID: <20150128060732.GA442@swordfish> (raw)
In-Reply-To: <20150128053541.GE32712@blaptop>

On (01/28/15 14:35), Minchan Kim wrote:
> I tested it with dd on /dev/zram0 without any FS on my KVM
> and I cannot see any measureable performance gap.
> Hmm, I will try it on real machine.

hm... no, it's 100% stable

 ./iozone -t 3 -R -r 16K -s 60M -I +Z

        test           base        srcu

 "  Initial write " 1274320.94  1251996.78
 "        Rewrite " 1965783.94  1994964.06
 "           Read " 4994070.75  4785895.88
 "        Re-read " 5134244.62  5010810.50
 "   Reverse Read " 4098531.38  4049988.38
 "    Stride read " 4577775.75  4263884.50
 "    Random read " 4131315.75  4636718.38
 " Mixed workload " 3675635.25  3854783.06
 "   Random write " 1832045.12  1863511.31
 "         Pwrite " 1238366.59  1258660.47
 "          Pread " 2475710.28  2404201.75
 "         Fwrite " 2410579.94  2396443.25
 "          Fread " 7723248.00  7127479.75

 "  Initial write " 1325167.41  1321517.41
 "        Rewrite " 2044098.62  2161141.06
 "           Read " 5267661.12  6203909.25
 "        Re-read " 5458601.62  5773477.12
 "   Reverse Read " 5001896.25  5103856.12
 "    Stride read " 4858877.62  5003335.25
 "    Random read " 4620529.88  4685374.62
 " Mixed workload " 3868978.19  3939195.31
 "   Random write " 2037816.75  1949729.56
 "         Pwrite " 1298255.91  1323038.47
 "          Pread " 2688768.09  2957903.06
 "         Fwrite " 2482632.44  2351247.50
 "          Fread " 7905214.75  7500859.75

 "  Initial write " 1334890.88  1332275.59
 "        Rewrite " 2061126.00  2152643.69
 "           Read " 5749209.88  5652791.62
 "        Re-read " 5845869.00  6261777.25
 "   Reverse Read " 4681375.12  4875618.50
 "    Stride read " 4760689.75  5242670.00
 "    Random read " 5112395.75  4650536.62
 " Mixed workload " 4129292.06  4075847.88
 "   Random write " 2067824.19  2022719.88
 "         Pwrite " 1328648.88  1334709.97
 "          Pread " 2607281.94  2581113.12
 "         Fwrite " 2404771.38  2348427.62
 "          Fread " 7903982.75  7486812.50

	-ss

  reply	other threads:[~2015-01-28  6:08 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-23  5:58 Minchan Kim
2015-01-23  5:58 ` [PATCH 2/2] zram: protect zram->stat race with init_lock Minchan Kim
2015-01-23 13:45   ` Jerome Marchand
2015-01-23 14:38   ` Sergey Senozhatsky
2015-01-24 13:17     ` Ganesh Mahendran
2015-01-25 14:38       ` Sergey Senozhatsky
2015-01-23 13:07 ` [PATCH 1/2] zram: free meta out of init_lock Jerome Marchand
2015-01-23 14:24 ` Sergey Senozhatsky
2015-01-23 14:48   ` Jerome Marchand
2015-01-23 15:47     ` Sergey Senozhatsky
2015-01-26  1:33       ` Minchan Kim
2015-01-26 14:17         ` Sergey Senozhatsky
2015-01-26 16:00           ` Minchan Kim
2015-01-27  2:17             ` Sergey Senozhatsky
2015-01-27  3:18               ` Minchan Kim
2015-01-27  4:03                 ` Sergey Senozhatsky
2015-01-28  0:15                   ` Minchan Kim
2015-01-28  0:22                     ` Minchan Kim
2015-01-28  2:07                       ` Sergey Senozhatsky
2015-01-28  2:57                         ` Minchan Kim
2015-01-28  3:53                           ` Sergey Senozhatsky
2015-01-28  4:07                             ` Sergey Senozhatsky
2015-01-28  4:50                               ` Sergey Senozhatsky
2015-01-28  4:58                                 ` Minchan Kim
2015-01-28  5:35                                   ` Minchan Kim
2015-01-28  6:08                                     ` Sergey Senozhatsky [this message]
2015-01-28  6:10                                       ` Sergey Senozhatsky
2015-01-28  4:55                             ` Minchan Kim
2015-01-28  0:24                     ` Sergey Senozhatsky
2015-01-28  0:59                       ` Minchan Kim
2015-01-26 14:34         ` Jerome Marchand
2015-01-26 15:52           ` Minchan Kim

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=20150128060732.GA442@swordfish \
    --to=sergey.senozhatsky.work@gmail.com \
    --cc=akpm@linux-foundation.org \
    --cc=jmarchan@redhat.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=minchan@kernel.org \
    --cc=ngupta@vflare.org \
    --cc=sergey.senozhatsky@gmail.com \
    --subject='Re: [PATCH 1/2] zram: free meta out of init_lock' \
    /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

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).