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 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.