From: Davide Libenzi <davidel@xmailserver.org>
To: Benjamin LaHaise <bcrl@redhat.com>
Cc: "Christopher K. St. John" <cks@distributopia.com>
Cc: "Christopher K. St. John" <cks@distributopia.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] /dev/epoll update ...
Date: Thu, 20 Sep 2001 12:58:58 -0700 (PDT) [thread overview]
Message-ID: <XFMail.20010920125858.davidel@xmailserver.org> (raw)
In-Reply-To: <20010920153352.A20626@redhat.com>
On 20-Sep-2001 Benjamin LaHaise wrote:
> On Thu, Sep 20, 2001 at 11:25:13AM -0700, Davide Libenzi wrote:
>> 2) less user<->kernel memory moves
>>
>> The concept is very similar anyway coz you basically have to initiate the
>> io-call and wait for an event.
>> The difference is how events are collected.
>
> See the above. =) aio also works much better as the io request helps
> define the duration for memory pinning of any O_DIRECT or similar
> operations that allow the hardware to act on user provided buffers.
Obviously if you hook down at lower kernel levels you can better optimize the event
notification but my design guide for the patch was to be the less intrusive
as possible.
If you look at the patch, it has a very limited changes inside linux core files
and this will make it usable/merged even if it won't be included inside the
mainstream code.
- Davide
next prev parent reply other threads:[~2001-09-20 19:56 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-19 2:20 [PATCH] /dev/epoll update Dan Kegel
2001-09-19 6:25 ` Dan Kegel
2001-09-19 7:04 ` Christopher K. St. John
2001-09-19 15:37 ` Dan Kegel
2001-09-19 15:59 ` Zach Brown
2001-09-19 17:12 ` Christopher K. St. John
2001-09-19 17:39 ` Davide Libenzi
2001-09-19 18:26 ` Alan Cox
2001-09-19 17:25 ` Davide Libenzi
2001-09-19 19:03 ` Christopher K. St. John
2001-09-19 19:30 ` Davide Libenzi
2001-09-19 21:49 ` Christopher K. St. John
2001-09-19 22:11 ` Davide Libenzi
2001-09-19 23:24 ` Christopher K. St. John
2001-09-19 23:52 ` Davide Libenzi
2001-09-20 2:13 ` Dan Kegel
2001-09-20 2:28 ` Davide Libenzi
2001-09-20 3:03 ` Dan Kegel
2001-09-20 16:58 ` Davide Libenzi
2001-09-20 4:32 ` Christopher K. St. John
2001-09-20 4:43 ` Christopher K. St. John
2001-09-20 5:05 ` Benjamin LaHaise
2001-09-20 18:25 ` Davide Libenzi
2001-09-20 19:33 ` Benjamin LaHaise
2001-09-20 19:58 ` Davide Libenzi [this message]
2001-09-20 17:18 ` Davide Libenzi
2001-09-24 0:11 ` Gordon Oliver
2001-09-24 0:33 ` Davide Libenzi
2001-09-24 19:23 ` Eric W. Biederman
2001-09-24 20:04 ` Davide Libenzi
2001-09-21 5:59 ` Ton Hospel
2001-09-21 16:48 ` Davide Libenzi
2001-09-19 17:21 ` Davide Libenzi
-- strict thread matches above, loose matches on Subject: below --
2002-03-20 3:49 [patch] " Davide Libenzi
[not found] <local.mail.linux-kernel/3BB03C6A.7D1DD7B3@kegel.com>
[not found] ` <local.mail.linux-kernel/3BAEB39B.DE7932CF@kegel.com>
[not found] ` <local.mail.linux-kernel/3BAF83EF.C8018E45@distributopia.com>
2001-09-25 17:36 ` [PATCH] " Jonathan Lemon
2001-09-25 18:34 ` Dan Kegel
2001-09-24 4:16 Dan Kegel
2001-09-24 19:11 ` Eric W. Biederman
2001-09-24 19:34 ` Jamie Lokier
2001-09-24 20:09 ` Davide Libenzi
2001-09-24 21:56 ` Jamie Lokier
2001-09-24 22:08 ` Davide Libenzi
2001-09-24 22:09 ` Jamie Lokier
2001-09-24 22:20 ` Davide Libenzi
2001-09-24 22:21 ` Jamie Lokier
2001-09-24 22:30 ` Davide Libenzi
2001-09-25 9:25 ` Dan Kegel
[not found] ` <3BAF83EF.C8018E45@distributopia.com>
2001-09-25 8:12 ` Dan Kegel
2001-09-21 6:22 Dan Kegel
2001-09-21 18:45 ` Davide Libenzi
2001-09-07 19:27 Davide Libenzi
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