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From: Gui Jianfeng <guijianfeng-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
To: Andrea Righi <righi.andrea-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: Re: [PATCH -mm 0/6] cgroup: block device i/o controller (v11)
Date: Mon, 03 Nov 2008 15:01:08 +0800	[thread overview]
Message-ID: <490EA1B4.9070600@cn.fujitsu.com> (raw)
In-Reply-To: <1223373818-13687-1-git-send-email-righi.andrea-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

Hi Andrea,

I'v tested io-throttle(v11), it seems io-throttle doesn't work well 
when a process writes(delay-write) a small file(<50M may be). it can't 
throttle the request process accurately.
I guess the following reason causes this problem.
The write-request process terminates too early to see all accounting
calculated in pdflush. So io-throttle can't throttle
enough time for that process. Am i right?


-- 
Regards
Gui Jianfeng

  parent reply	other threads:[~2008-11-03  7:01 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-07 10:03 [PATCH -mm 0/6] cgroup: block device i/o controller (v11) Andrea Righi
2008-10-14  9:17 ` Dong-Jae Kang
     [not found]   ` <2891419e0810140217l70f233bbr3b08760188458c35-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-10-14  9:56     ` Andrea Righi
2008-10-14  9:56   ` Andrea Righi
2008-10-15  6:13     ` Dong-Jae Kang
2008-10-16  9:00       ` Andrea Righi
     [not found]       ` <2891419e0810142313p1aa16295ne2aa8ac3a87be491-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-10-16  9:00         ` Andrea Righi
     [not found]     ` <48F46CB6.3010904-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2008-10-15  6:13       ` Dong-Jae Kang
     [not found] ` <1223373818-13687-1-git-send-email-righi.andrea-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2008-10-14  9:17   ` Dong-Jae Kang
2008-11-03  7:01   ` Gui Jianfeng [this message]
     [not found]     ` <490EA1B4.9070600-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2008-11-10  8:51       ` Andrea Righi
     [not found]         ` <4917F62A.20800-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2008-11-10  9:52           ` Gui Jianfeng
  -- strict thread matches above, loose matches on Subject: below --
2008-10-07 10:03 Andrea Righi

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