From: David Weinehall <tao@acc.umu.se>
To: Zlatko Calusic <Zlatko.Calusic@CARNet.hr>
Cc: Linus Torvalds <torvalds@transmeta.com>,
Linux-MM List <linux-mm@kvack.org>,
Linux Kernel List <linux-kernel@vger.rutgers.edu>
Subject: Re: [PATCH] MM fix & improvement
Date: Sun, 10 Jan 1999 15:45:38 +0100 (MET) [thread overview]
Message-ID: <Pine.A41.4.05.9901101543290.10784-100000@lenin.acc.umu.se> (raw)
In-Reply-To: <87k8yw295p.fsf@atlas.CARNet.hr>
On 9 Jan 1999, Zlatko Calusic wrote:
> OK, here it goes. Patch is unbelievably small, and improvement is
> BIG.
[Snip]
> pre6 + MM cleanup (needed for swap cache hit rate)
>
> hogmem 100 3 - 10.75 MB/sec
> 2 x hogmem 50 3 - 2.01 + 1.97 MB/sec (disk thrashing)
> swap cache - add 194431 find 13315/194300 (6.9% hit rate)
>
> pre6 + MM cleanup + patch below
>
> hogmem 100 3 - 13.27 MB/sec
> 2 x hogmem 50 3 - 6.15 + 5.77 MB/sec (perfect)
> swap cache - add 175887 find 76003/237711 (32% hit rate)
>
> Notice how swap cache done it's job much better with changes applied!!!
Looks REALLY nice...
> Both tests were run in single user mode, after reboot, on 64MB
> machine. Don't be disappointed if you get smaller numbers, I have two
> swap partitions on different disks and transports (IDE + SCSI). :)
Have you tried your patch on a low-memory machine and/or a low-capacity
processor, ie a 386 with say 4 MB's of memory?!
/David Weinehall
_ _
// David Weinehall <tao@acc.umu.se> /> Northern lights wander \\
// Project MCA Linux hacker // Dance across the winter sky //
\> http://www.acc.umu.se/~tao/ </ Full colour fire </
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prev parent reply other threads:[~1999-01-10 14:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-01-09 7:32 Zlatko Calusic
1999-01-09 7:43 ` Zlatko Calusic
1999-01-09 7:53 ` Linus Torvalds
1999-01-09 8:05 ` Zlatko Calusic
1999-01-11 5:05 ` Dax Kelson
1999-01-09 9:55 ` Stephen C. Tweedie
1999-01-10 14:45 ` David Weinehall [this message]
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