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Re: [PATCH 00/37] Permit filesystem local caching

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From: Daniel Phillips <phillips@...>
To: David Howells <dhowells@...>
Cc: <Trond.Myklebust@...>, <chuck.lever@...>, <casey@...>, <nfsv4@...>, <linux-kernel@...>, <linux-fsdevel@...>, <selinux@...>, <linux-security-module@...>
Subject: Re: [PATCH 00/37] Permit filesystem local caching
Date: Thursday, February 21, 2008 - 6:44 pm

Hi David,

I am trying to spot the numbers that show the sweet spot for this 
optimization, without much success so far.

Who is supposed to win big?  Is this mainly about reducing the load on 
the server, or is the client supposed to win even with a lightly loaded 
server?

When you say Ext3 cache vs NFS cache is the first on the server and the 
second on the client?

Regards,

Daniel
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Messages in current thread:
[PATCH 00/37] Permit filesystem local caching, David Howells, (Wed Feb 20, 12:05 pm)
Re: [PATCH 00/37] Permit filesystem local caching, Daniel Phillips, (Wed Feb 20, 11:07 pm)
Re: [PATCH 00/37] Permit filesystem local caching, David Howells, (Thu Feb 21, 10:55 am)
Re: [PATCH 00/37] Permit filesystem local caching, David Howells, (Thu Feb 21, 7:33 pm)
Re: [PATCH 00/37] Permit filesystem local caching, David Howells, (Fri Feb 22, 12:14 pm)
Re: [PATCH 00/37] Permit filesystem local caching, Chris Mason, (Fri Feb 22, 9:52 am)
Re: [PATCH 00/37] Permit filesystem local caching, David Howells, (Fri Feb 22, 12:47 pm)
Re: [PATCH 00/37] Permit filesystem local caching, David Howells, (Fri Feb 22, 12:12 pm)
Re: [PATCH 00/37] Permit filesystem local caching, Daniel Phillips, (Thu Feb 21, 6:44 pm)
Re: [PATCH 00/37] Permit filesystem local caching, David Howells, (Thu Feb 21, 8:07 pm)
Re: [PATCH 00/37] Permit filesystem local caching, Daniel Phillips, (Thu Feb 21, 8:57 pm)
Re: [PATCH 00/37] Permit filesystem local caching, David Howells, (Fri Feb 22, 8:48 am)
Re: [PATCH 00/37] Permit filesystem local caching, Daniel Phillips, (Fri Feb 22, 6:25 pm)
Re: [PATCH 00/37] Permit filesystem local caching, David Howells, (Fri Feb 22, 9:22 pm)
RE: [PATCH 00/37] Permit filesystem local caching, Muntz, Daniel, (Thu Feb 21, 6:52 pm)
Re: [PATCH 00/37] Permit filesystem local caching, Kevin Coffman, (Thu Feb 21, 11:17 am)
Re: [PATCH 00/37] Permit filesystem local caching, David Howells, (Thu Feb 21, 8:31 am)
Re: [PATCH 00/37] Permit filesystem local caching, Serge E. Hallyn, (Wed Feb 20, 3:58 pm)
Re: [PATCH 00/37] Permit filesystem local caching, David Howells, (Wed Feb 20, 4:11 pm)
[PATCH 32/37] NFS: Add read context retention for FS-Cache t..., David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 34/37] NFS: Read pages from FS-Cache into an NFS inode, David Howells, (Wed Feb 20, 12:09 pm)
[PATCH 17/37] CacheFiles: Add a hook to write a single page ..., David Howells, (Wed Feb 20, 12:07 pm)
[PATCH 25/37] NFS: Define and create server-level objects, David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 35/37] NFS: Store pages from an NFS inode into a loca..., David Howells, (Wed Feb 20, 12:09 pm)
[PATCH 30/37] NFS: Add some new I/O event counters for FS-Ca..., David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 37/37] NFS: Add mount options to enable local caching..., David Howells, (Wed Feb 20, 12:09 pm)
[PATCH 31/37] NFS: FS-Cache page management, David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 12/37] FS-Cache: Recruit a couple of page flags for c..., David Howells, (Wed Feb 20, 12:07 pm)
[PATCH 15/37] CacheFiles: Add missing copy_page export for i..., David Howells, (Wed Feb 20, 12:07 pm)
[PATCH 33/37] NFS: nfs_readpage_async() needs to be accessib..., David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 36/37] NFS: Display local caching state, David Howells, (Wed Feb 20, 12:09 pm)
[PATCH 18/37] CacheFiles: Permit the page lock state to be m..., David Howells, (Wed Feb 20, 12:07 pm)
[PATCH 29/37] NFS: Invalidate FsCache page flags when cache ..., David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 16/37] CacheFiles: Be consistent about the use of map..., David Howells, (Wed Feb 20, 12:07 pm)
[PATCH 07/37] Security: De-embed task security record from t..., David Howells, (Wed Feb 20, 12:06 pm)
Re: [PATCH 07/37] Security: De-embed task security record fr..., Casey Schaufler, (Fri Feb 22, 12:57 am)
[PATCH 04/37] KEYS: Add keyctl function to get a security la..., David Howells, (Wed Feb 20, 12:06 pm)
[PATCH 26/37] NFS: Define and create superblock-level objects, David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 28/37] NFS: Use local disk inode cache, David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 22/37] NFS: Add FS-Cache option bit and debug bit, David Howells, (Wed Feb 20, 12:07 pm)
[PATCH 08/37] Security: Add a kernel_service object class to..., David Howells, (Wed Feb 20, 12:06 pm)
[PATCH 01/37] KEYS: Increase the payload size when instantia..., David Howells, (Wed Feb 20, 12:06 pm)
[PATCH 27/37] NFS: Define and create inode-level cache objects, David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 11/37] FS-Cache: Release page-&gt;private after faile..., David Howells, (Wed Feb 20, 12:06 pm)
[PATCH 23/37] NFS: Permit local filesystem caching to be ena..., David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 19/37] CacheFiles: Export things for CacheFiles, David Howells, (Wed Feb 20, 12:07 pm)
[PATCH 02/37] KEYS: Check starting keyring as part of search, David Howells, (Wed Feb 20, 12:06 pm)
[PATCH 21/37] NFS: Add comment banners to some NFS functions, David Howells, (Wed Feb 20, 12:07 pm)
[PATCH 05/37] Security: Change current-&gt;fs[ug]id to curre..., David Howells, (Wed Feb 20, 12:06 pm)
[PATCH 09/37] Security: Allow kernel services to override LS..., David Howells, (Wed Feb 20, 12:06 pm)
Re: [PATCH 09/37] Security: Allow kernel services to overrid..., Casey Schaufler, (Fri Feb 22, 1:06 am)
Re: [PATCH 09/37] Security: Allow kernel services to overrid..., David Howells, (Fri Feb 22, 9:06 am)
[PATCH 24/37] NFS: Register NFS for caching and retrieve the..., David Howells, (Wed Feb 20, 12:08 pm)
[PATCH 13/37] FS-Cache: Provide an add_wait_queue_tail() fun..., David Howells, (Wed Feb 20, 12:07 pm)
[PATCH 10/37] Security: Make NFSD work with detached security, David Howells, (Wed Feb 20, 12:06 pm)
[PATCH 03/37] KEYS: Allow the callout data to be passed as a..., David Howells, (Wed Feb 20, 12:06 pm)