[OpenAFS] Re: bonnie++ on OpenAFS

Andrew Deason adeason@sinenomine.net
Mon, 22 Nov 2010 20:03:37 -0500

On Mon, 22 Nov 2010 19:36:28 -0500
Marc Dionne <marc.c.dionne@gmail.com> wrote:

> 2 - It can repeatedly flush out the same data to the server.  I don't
> understand exactly what's occurring in this particular case, but
> looking at packet traces (I reproduced it here), I see the client
> sending a series of overlapping ranges (0-4k, 0-8k... 0-1MB) to the
> server.  So on average at that point it is writing each 4k block 128
> times to the server...

Yep, this is what's happening in the trace Achim provided, too. Every 4k
we write the chunk. I'm not sure how that's possible unless something is
closing the file a lot, or the cache is full of stuff we can't kick out.

Andrew Deason