From: Lee Revell <rlrevell@joe-job.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Hugh Dickins <hugh@veritas.com>, Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@osdl.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: More latency regressions with 2.6.11-rc4-RT-V0.7.39-02
Date: Wed, 23 Feb 2005 22:03:58 -0500 [thread overview]
Message-ID: <1109214238.4957.6.camel@krustophenia.net> (raw)
In-Reply-To: <421D3ED1.9040409@yahoo.com.au>
On Thu, 2005-02-24 at 13:41 +1100, Nick Piggin wrote:
> Lee Revell wrote:
> >
> > Agreed, it would be much better to optimize this away than just add a
> > scheduling point. It seems like we could do this lazily.
> >
>
> Oh? What do you mean by lazy? IMO it is sort of implemented lazily now.
> That is, we are too lazy to refcount page table pages in fastpaths, so
> that pushes a lot of work to unmap time. Not necessarily a bad trade-off,
> mind you. Just something I'm looking into.
>
I guess I was thinking we could be even more lazy, and somehow defer it
until after unmap time (in lieu of memory pressure that is). Actually
that's kind of what a lock break would do.
Lee
next prev parent reply other threads:[~2005-02-24 3:04 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-23 18:07 More latency regressions with 2.6.11-rc4-RT-V0.7.39-02 Lee Revell
2005-02-23 19:16 ` Hugh Dickins
2005-02-23 19:36 ` Lee Revell
2005-02-23 20:06 ` Hugh Dickins
2005-02-23 20:10 ` Lee Revell
2005-02-23 20:30 ` Lee Revell
2005-02-23 21:03 ` Hugh Dickins
2005-02-23 22:14 ` Lee Revell
2005-02-23 23:52 ` PPC RT Patch john cooper
2005-02-24 4:20 ` Frank Rowand
2005-02-24 13:56 ` john cooper
2005-02-23 23:27 ` More latency regressions with 2.6.11-rc4-RT-V0.7.39-02 Nick Piggin
2005-02-24 1:03 ` Lee Revell
2005-02-24 1:29 ` Nick Piggin
2005-02-24 2:24 ` Lee Revell
2005-02-24 2:41 ` Nick Piggin
2005-02-24 3:03 ` Lee Revell [this message]
2005-02-23 20:53 ` Hugh Dickins
2005-02-23 22:13 ` Lee Revell
2005-02-24 4:56 ` Hugh Dickins
2005-02-24 6:32 ` Lee Revell
2005-02-24 8:26 ` Hugh Dickins
2005-02-25 3:30 ` Lee Revell
2005-02-25 5:58 ` Hugh Dickins
2005-02-25 15:02 ` Lee Revell
2005-02-23 19:52 ` Lee Revell
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=1109214238.4957.6.camel@krustophenia.net \
--to=rlrevell@joe-job.com \
--cc=akpm@osdl.org \
--cc=hugh@veritas.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=nickpiggin@yahoo.com.au \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox