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From: Charles Shannon Hendrix <shannon@widomaker.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: NFS and kernel 2.6.x
Date: Sat, 17 Apr 2004 13:55:39 -0400	[thread overview]
Message-ID: <20040417175538.GD2062@widomaker.com> (raw)
In-Reply-To: <1082179726.3012.7.camel@lade.trondhjem.org>

Fri, 16 Apr 2004 @ 22:28 -0700, Trond Myklebust said:

> It's an inevitable side-effect of the increased caching. 

OK.  That answers my question of: was making NFS bursty done on purpose.
Answer: no.

> If you are constantly writing out data, then you spread out the load
> a lot more than if you wait until the user actually requests a flush.
> On the other hand, it means that if your application reads/writs
> several times over the same page, then you only write it out once.

Usually, eliminating redundant writes in your application is a better
optimization than relying on the OS to do it for you.

I find bursty I/O is less desirable in most cases.


-- 
shannon "AT" widomaker.com -- ["The trade of governing has always been
monopolized by the most ignorant and the most rascally individuals of
mankind.  -- Thomas Paine"]

  reply	other threads:[~2004-04-17 18:09 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-04-16  1:14 NFS and kernel 2.6.x Charles Shannon Hendrix
2004-04-16  1:31 ` Trond Myklebust
2004-04-16  1:53   ` Andrew Morton
2004-04-16  2:54     ` Trond Myklebust
2004-04-16  4:59       ` Phil Oester
2004-04-16  5:29         ` Trond Myklebust
2004-04-16  7:13           ` Paul Wagland
2004-04-16 14:44           ` Marcelo Tosatti
2004-04-16 14:46             ` Marcelo Tosatti
2004-04-16 15:50             ` Trond Myklebust
2004-04-16 15:55             ` Dave Gilbert (Home)
2004-04-16 16:13               ` Trond Myklebust
2004-04-16 19:07                 ` Daniel Egger
2004-04-17  4:56                   ` Chris Friesen
2004-04-17  9:56                     ` Daniel Egger
2004-04-17  5:24                   ` Trond Myklebust
2004-04-17 14:15                     ` Daniel Egger
2004-04-16 19:11                 ` Charles Shannon Hendrix
2004-04-17 16:44           ` Matthias Urlichs
2004-04-17 18:15             ` Trond Myklebust
2004-04-17 18:32               ` Marc Singer
2004-04-17 18:58                 ` Trond Myklebust
2004-04-17 19:01                   ` Marc Singer
2004-04-17 19:09                     ` Trond Myklebust
2004-04-17 19:19                       ` Russell King
2004-04-18  2:51                         ` Trond Myklebust
2004-04-19 16:39                           ` Trond Myklebust
2004-04-19 21:10                             ` Trond Myklebust
2004-04-17 22:22                   ` Marc Singer
2004-04-18  0:57                     ` Trond Myklebust
2004-04-18  5:01                       ` Marc Singer
2004-04-18  6:36                         ` Chris Friesen
2004-04-18  7:56                           ` Russell King
2004-04-18 17:31                             ` Marc Singer
2004-04-17 19:01                 ` Daniel Egger
2004-04-17 20:22                   ` Marc Singer
2004-04-18 11:14                     ` Daniel Egger
2004-04-19  9:06             ` Helge Hafting
2004-04-16  9:03     ` Jamie Lokier
2004-04-16 15:55       ` Trond Myklebust
2004-04-16 18:48         ` Jamie Lokier
2004-04-16 19:06           ` Trond Myklebust
2004-04-16 19:39             ` Jamie Lokier
2004-04-17 22:32               ` Trond Myklebust
2004-04-18  3:26                 ` Jamie Lokier
2004-04-18  7:03                   ` Trond Myklebust
2004-04-18 23:22                     ` Jamie Lokier
2004-04-19 15:38                       ` Trond Myklebust
2004-04-19 16:19                         ` Trond Myklebust
2004-04-20  0:09                         ` Jamie Lokier
     [not found]   ` <20040416190126.GB408@widomaker.com>
     [not found]     ` <1082144608.2581.156.camel@lade.trondhjem.org>
     [not found]       ` <20040417000353.GA3750@widomaker.com>
2004-04-17  5:28         ` Trond Myklebust
2004-04-17 17:55           ` Charles Shannon Hendrix [this message]
2004-04-17 18:55             ` Trond Myklebust
     [not found] <1Lql8-6O3-1@gated-at.bofh.it>
     [not found] ` <1LquO-6TK-5@gated-at.bofh.it>
     [not found]   ` <1LqOg-76p-19@gated-at.bofh.it>
     [not found]     ` <1LrKo-7Sn-21@gated-at.bofh.it>
     [not found]       ` <1LtM3-12d-5@gated-at.bofh.it>
     [not found]         ` <1Luf2-1kK-1@gated-at.bofh.it>
     [not found]           ` <1LDBL-uY-3@gated-at.bofh.it>
2004-04-16 20:31             ` Andi Kleen

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