From: Amit Gud <agud@akamai.com>
To: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: linux-nfs@vger.kernel.org, steved@redhat.com,
gud-OYTqUY/oFF8@public.gmane.org, "Uhlenkott,
Jason" <juhlenko@akamai.com>
Subject: Re: [PATCH] NFS: Add acreg{min,max} and acdir{min,max} in milliseconds
Date: Wed, 10 Jun 2009 12:43:31 -0700 [thread overview]
Message-ID: <4A300CE3.8080502@akamai.com> (raw)
In-Reply-To: <1244636844.24750.23.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
Trond Myklebust wrote:
> On Tue, 2009-06-09 at 18:32 -0700, Amit Gud wrote:
>> This patch adds 4 new NFS mount options(acdirminms, acdirmaxms, acregminms,
>> acregmaxms) converting already existing one into a millisecond resolution
>> instead of seconds.
>>
>> Also, modifies the mountstats output to milliseconds instead of seconds.
>
> Why, exactly, do you need to control cache timeouts down to the
> millisecond level?
>
The problem is to make the updates visible from one client to the other
in less than a second and turning off caching entirely has an
unacceptably high penalty.
AG
--
May the source be with you.
http://www.cis.ksu.edu/~gud
next prev parent reply other threads:[~2009-06-10 19:49 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-10 1:32 [PATCH] NFS: Add acreg{min,max} and acdir{min,max} in milliseconds Amit Gud
2009-06-10 12:27 ` Trond Myklebust
[not found] ` <1244636844.24750.23.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-06-10 19:43 ` Amit Gud [this message]
2009-06-11 0:11 ` Trond Myklebust
2009-06-11 20:24 ` Amit Gud
2009-06-11 21:14 ` Trond Myklebust
[not found] ` <1244754888.5047.132.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-06-12 19:30 ` Amit Gud
2009-06-12 19:50 ` Trond Myklebust
[not found] ` <1244836259.19533.19.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-06-12 21:49 ` Amit Gud
2009-06-12 22:44 ` Trond Myklebust
[not found] ` <1244846673.32257.69.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-06-15 22:53 ` Amit Gud
2009-06-15 23:08 ` [PATCH] NFS: Add acreg{min,max} and acdir{min, max} " NeilBrown
[not found] ` <3786d1f06aae533fa82740d68985fd50.squirrel-eq65iwfR9nKIECXXMXunQA@public.gmane.org>
2009-06-15 23:19 ` Trond Myklebust
[not found] ` <1245107980.7470.0.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-06-16 16:30 ` Steve Dickson
2009-06-17 10:37 ` Neil Brown
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