From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Andrew Morton <akpm@osdl.org>
Cc: Shantanu Goel <sgoel01@yahoo.com>, linux-kernel@vger.kernel.org
Subject: Re: [VM PATCH 2.6.6-rc3-bk5] Dirty balancing in the presence of mapped pages
Date: Wed, 05 May 2004 12:16:41 +1000 [thread overview]
Message-ID: <40984E89.6070501@yahoo.com.au> (raw)
In-Reply-To: <20040504180345.099926ec.akpm@osdl.org>
Andrew Morton wrote:
> Shantanu Goel <sgoel01@yahoo.com> wrote:
>
>>Presently the kernel does not collection information
>>about the percentage of memory that processes have
>>dirtied via mmap until reclamation. Nothing analogous
>>to balance_dirty_pages() is being done for mmap'ed
>>pages. The attached patch adds collection of dirty
>>page information during kswapd() scans and initiation
>>of background writeback by waking up bdflush.
>
>
> And what were the effects of this patch?
>
I havea modified patch from Nikita that does the
if (ptep_test_and_clear_dirty) set_page_dirty from
page_referenced, under the page_table_lock.
So it also picks up pages coming off the active list.
It doesn't do the wakeup_bdflush thing, but that sounds
like a good idea. What does wakeup_bdflush(-1) mean?
next prev parent reply other threads:[~2004-05-05 2:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-05 0:20 [VM PATCH 2.6.6-rc3-bk5] Dirty balancing in the presence of mapped pages Shantanu Goel
2004-05-05 1:03 ` Andrew Morton
2004-05-05 2:16 ` Nick Piggin [this message]
2004-05-05 2:57 ` Andrew Morton
2004-05-05 3:16 ` Nick Piggin
2004-05-05 3:24 ` Nick Piggin
2004-05-09 17:24 ` Bill Davidsen
2004-05-05 4:31 ` Shantanu Goel
2004-05-05 5:25 ` Andrew Morton
2004-05-05 16:56 ` Nikita Danilov
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