From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: Linux PM mailing list <linux-pm@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: very slow IO after resume
Date: Thu, 02 Jan 2014 12:33:14 +0100 [thread overview]
Message-ID: <52C54E7A.3030303@linaro.org> (raw)
Hi All,
I noticed an issue on the IOs after resuming my laptop.
My mailer thunderbird or the compilations are very slow, often blocked
in 'D' state. The 'top' shows 81% on wait.
The processes stack are always in when blocked:
[<c164f8ab>] balance_dirty_pages.isra.18+0x3f5/0x4b4
[<c112a2ce>] balance_dirty_pages_ratelimited+0xde/0x100
[<c1120d81>] generic_perform_write+0x141/0x1c0
[<c1120e50>] generic_file_buffered_write+0x50/0x80
[<c1122a4a>] __generic_file_aio_write+0x22a/0x490
[<c1122d13>] generic_file_aio_write+0x63/0xd0
[<c11f5162>] ext4_file_write+0xb2/0x100
[<c117318a>] do_sync_write+0x6a/0xa0
[<c1173dc5>] vfs_write+0xa5/0x1d0
[<c1174277>] SyS_write+0x57/0xa0
[<c1661b37>] syscall_call+0x7/0xb
The kernel is 3.11.0-031100-generic based on ubuntu, I noticed this
issue on some previous version (since 3.5 AFAIR).
My laptop is a Lenovo X230, SSD 250GB (6Gb/s) and 16GB of RAM.
Is it a known issue ?
Thanks
-- Daniel
--
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next reply other threads:[~2014-01-02 11:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-02 11:33 Daniel Lezcano [this message]
2014-01-02 11:56 ` very slow IO after resume Ming Lei
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