[OpenAFS] write caching differences between 1.2 and 1.4 clients?
Derrick J Brashear
Tue, 14 Aug 2007 12:44:40 -0400 (EDT)
Per our private thread, the salient point is "on linux" and not simply
1.2 versus 1.4
On Tue, 14 Aug 2007, Stephan.Wiesand@desy.de wrote:
> The AFS client used to cache writes on the local disk until a file is closed,
> but this seems to have changed?
> Consider the following script:
> while [ 1 = 1 ]; do
> sleep 10
> Now I run "script.sh >> afs12.out" on a 1.2.13 client, and "script.sh >>
> afs14.out" on a 1.4.4 one. Except for the AFS client version, the systems are
> identical (Scientific Linux 3, same kernel & patches, ...).
> On any 3rd client system (version doesn't matter), I see afs14.out growing by
> 30 bytes every 10 seconds, while afs12.out stays at size 0 until I kill the
> Is this change intentional? I always thought the old behaviour really helps
> in environments with many clients? Any insights much appreciated.
> Stephan Wiesand
> DESY - DV -
> Platanenallee 6
> 15738 Zeuthen, Germany
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