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List:       netatalk-devel
Subject:    [Netatalk-devel] Very poor read perfomance on OpenSolaris
From:       Marc Haisenko <marc () darkdust ! net>
Date:       2011-01-07 16:37:54
Message-ID: C8C4C3CD-286B-4E50-A4EE-90A7AFE3FE0E () darkdust ! net
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Hi folks,
I recently upgraded my OpenSolaris server to snv_134 (uname -a: "SunOS opensolaris \
5.11 snv_134b i86pc i386 i86pc Solaris"). I also upgraded netatalk from 2.0.5 to \
2.1.5. Since then, I'm experiencing extremely bad read perfomance. Copying a 9.9MB \
file from my Mac to the AFP share takes 1.6 seconds, but copying it back takes 45.4 \
seconds !

The share is on a ZFS pool, so I had a look whether that might be the issue, but at \
over 400MB/s the read performance of the pool is not an issue. I also tried older \
versions of netatalk (2.1.4, 2.1.1 and 2.0.5), all showing the same behaviour. Quick \
debugging via compiling with "-pg" and using gprof didn't help pinpoint the problem, \
neither did "truss" (tool like "strace").

I don't know where to start debugging, any pointers at what functions to inspect are \
appreciated.

Regards,
	Marc

--
Marc Haisenko
marc@darkdust.net




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