From: Daniel Phillips <phillips@bonn-fries.net>
To: Anton Blanchard <anton@samba.org>, Momchil Velikov <velco@fadata.bg>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Scalable page cache - take two
Date: Thu, 27 Dec 2001 07:15:01 +0100 [thread overview]
Message-ID: <E16JTok-0000cu-00@starship.berlin> (raw)
In-Reply-To: <87bsgp7fcq.fsf@fadata.bg> <20011224005258.GB15536@krispykreme>
In-Reply-To: <20011224005258.GB15536@krispykreme>
On December 24, 2001 01:52 am, Anton Blanchard wrote:
> This is the still 12 way ppc64, the results are similar to the last
> test. It confirms that the current pagecache locking is a bottleneck
> for larger SMP machines.
>
> We quickly hit the following spinlocks with the pagecache lock out of
> the way:
>
> ext2_get_block: BKL
> refile_buffer: lru_list_lock
> remove_from_queues: lru_list_lock
> try_to_free_buffers: lru_list_lock
> d_lookup: dcache_lock
> ext2_discard_prealloc: BKL
>
> Is someone working on removing the BKL from ext2 in 2.5?
Al has already done most of the work, it won't take much to complete it. It
wasn't a priority before 2.5 (stability was).
It's nice to see somebody still cares about the speed of Ext2 ;)
--
Daniel
next prev parent reply other threads:[~2001-12-27 6:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-23 22:15 Momchil Velikov
2001-12-24 0:28 ` William Lee Irwin III
2001-12-24 0:52 ` Anton Blanchard
2001-12-27 6:15 ` Daniel Phillips [this message]
2001-12-24 17:08 ` Heinz Diehl
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