From: Eric Dumazet <dada1@cosmosbay.com>
To: Ravikiran G Thirumalai <kiran@scalex86.org>
Cc: Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org,
"Shai Fultheim (Shai@scalex86.org)" <shai@scalex86.org>,
Alok Kataria <alokk@calsoftinc.com>
Subject: Re: [patch] Additions to .data.read_mostly section
Date: Thu, 25 Aug 2005 00:38:02 +0200 [thread overview]
Message-ID: <430CF6CA.8040302@cosmosbay.com> (raw)
In-Reply-To: <20050824214610.GA3675@localhost.localdomain>
Ravikiran G Thirumalai a écrit :
> Following patch moves a few static 'read mostly' variables to the
> .data.read_mostly section. Typically these are vector - irq tables,
> boot_cpu_data, node_maps etc., which are initialized once and read from
> often and rarely written to. Please include.
>
Good candidates for read_mostly are all the 'kmem_cache_t *xxx_cache'
slab was carefuly designed to eliminate cache line ping pongs on SMP, but if
the initial pointer to slab sits in a heavily modified cache line, we loose.
Eric
next prev parent reply other threads:[~2005-08-24 22:38 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-24 21:46 [patch] Additions to .data.read_mostly section Ravikiran G Thirumalai
2005-08-24 22:38 ` Eric Dumazet [this message]
2005-08-25 7:56 ` Arjan van de Ven
2005-08-25 8:45 ` [PATCH] removes filp_count_lock and changes nr_files type to atomic_t Eric Dumazet
2005-08-25 9:05 ` Arjan van de Ven
2005-08-25 9:20 ` Eric Dumazet
2005-08-25 9:31 ` Arjan van de Ven
2005-08-25 9:08 ` Christoph Hellwig
2005-08-25 9:17 ` Eric Dumazet
2005-08-25 9:23 ` Christoph Hellwig
2005-08-25 10:41 ` Eric Dumazet
2005-08-25 11:11 ` Nick Piggin
2005-08-25 12:26 ` Eric Dumazet
2005-08-25 14:51 ` Nick Piggin
2005-08-25 14:56 ` Christoph Hellwig
2005-08-25 15:13 ` Eric Dumazet
2005-08-25 18:19 ` Dipankar Sarma
2005-08-25 18:36 ` Christoph Hellwig
2005-08-26 1:16 ` Nick Piggin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=430CF6CA.8040302@cosmosbay.com \
--to=dada1@cosmosbay.com \
--cc=akpm@osdl.org \
--cc=alokk@calsoftinc.com \
--cc=kiran@scalex86.org \
--cc=linux-kernel@vger.kernel.org \
--cc=shai@scalex86.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.