From: Simon Jeons <simon.jeons@gmail.com>
To: linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
hughd@google.com, riel@redhat.com,
Johannes Weiner <hannes@cmpxchg.org>,
mtk.manpages@gmail.com, Fengguang Wu <fengguang.wu@intel.com>
Subject: fadvise doesn't work well.
Date: Wed, 09 Jan 2013 02:05:21 -0600 [thread overview]
Message-ID: <1357718721.6568.3.camel@kernel.cn.ibm.com> (raw)
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In attanchment.
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root@kernel:~/Documents/mm/tools/linux-ftools# dd if=../../../images/ubuntu-11.04-desktop-i386.iso of=/tmpfs
1403484+0 records in
1403484+0 records out
718583808 bytes (719 MB) copied, 19.5054 s, 36.8 MB/s
root@kernel:~/Documents/mm/tools/linux-ftools# ./linux-fincore -s ../../../images/ubuntu-11.04-desktop-i386.iso
filename size total_pages min_cached page cached_pages cached_size cached_perc
-------- ---- ----------- --------------- ------------ ----------- -----------
../../../images/ubuntu-11.04-desktop-i386.iso 718583808 175436 0 175436 718585856 100.00
---
total cached size: 718585856
root@kernel:~/Documents/mm/tools/linux-ftools# ./linux-fadvise ../../../images/ubuntu-11.04-desktop-i386.iso DONTNEED 0,718585856
Going to fadvise ../../../images/ubuntu-11.04-desktop-i386.iso as mode DONTNEED
offset: 0
length: 718583808
Invalid mode DONTNEED
root@kernel:~/Documents/mm/tools/linux-ftools# ./linux-fincore -s ../../../images/ubuntu-11.04-desktop-i386.iso
filename size total_pages min_cached page cached_pages cached_size cached_perc
-------- ---- ----------- --------------- ------------ ----------- -----------
../../../images/ubuntu-11.04-desktop-i386.iso 718583808 175436 0 175436 718585856 100.00
---
total cached size: 718585856
next reply other threads:[~2013-01-09 8:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-09 8:05 Simon Jeons [this message]
2013-01-09 8:09 ` fadvise doesn't work well Fengguang Wu
2013-01-09 8:18 ` Simon Jeons
2013-01-09 8:23 ` Fengguang Wu
2013-01-09 8:26 ` Fengguang Wu
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