From: Dan Malek <dan@embeddededge.com>
To: Joakim.Tjernlund@lumentis.se
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: [26-devel] v2.6 performance slowdown on MPC8xx: Measuring TLB cache misses
Date: Sat, 23 Apr 2005 17:29:17 -0400 [thread overview]
Message-ID: <42b1a4ca0138e9576d010ec2754eb29a@embeddededge.com> (raw)
In-Reply-To: <BCEFJBPJCGFCNMMMIDBHCEIICLAA.Joakim.Tjernlund@lumentis.se>
On Apr 23, 2005, at 1:35 PM, Joakim Tjernlund wrote:
> Is it possible to handle the _PAGE_ACCESSED handling at pte creation
> in fault.c instead
> of doing it for every TLB miss? That should make the TLB Miss handler
> faster.
No. As part of VM management to determine working sets, it's possible
to have
this flag change state but the page to remain valid. The cost of
setting this properly
in the miss handler is minimal compared to the other stuff that we
should try
and streamline.
Thanks.
-- Dan
next prev parent reply other threads:[~2005-04-23 21:29 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-23 17:23 [26-devel] v2.6 performance slowdown on MPC8xx: Measuring TLB cache misses Joakim Tjernlund
2005-04-23 12:42 ` Marcelo Tosatti
2005-04-23 21:31 ` Joakim Tjernlund
2005-04-23 21:32 ` Dan Malek
2005-04-23 21:55 ` Joakim Tjernlund
2005-04-23 22:12 ` Dan Malek
2005-04-23 17:35 ` Joakim Tjernlund
2005-04-23 21:29 ` Dan Malek [this message]
2005-04-23 21:51 ` Joakim Tjernlund
2005-04-23 22:09 ` Dan Malek
2005-04-23 23:12 ` Dan Malek
2005-04-23 23:51 ` Joakim Tjernlund
2005-04-24 0:00 ` Dan Malek
2005-04-24 16:55 ` Marcelo Tosatti
2005-04-25 9:57 ` Joakim Tjernlund
2005-05-07 18:10 ` Joakim Tjernlund
2005-05-07 14:42 ` Marcelo Tosatti
2005-05-07 20:24 ` Dan Malek
-- strict thread matches above, loose matches on Subject: below --
2005-04-21 18:32 Marcelo Tosatti
2005-04-21 18:50 ` [26-devel] " Marcelo Tosatti
2005-04-22 6:18 ` Pantelis Antoniou
2005-04-22 15:39 ` Marcelo Tosatti
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