On Fri, May 04, 2001 at 08:40:03PM +0200, Dominik Westner wrote:
> Hi all,
> 
> I am having problems with the NFS performance between  a NetBSD1.5 
> (server) and a MacOSX10.0.2 (client) machine.
> 
> While I get about 6,8MB/s between two MacOSX machines both read/write. I 
> only get below 1MB/s write and about 6,7MB/s read performance between 
> NetBSD and MacOSX.
> 
> Here are some details: (boo / NetBSD server, icebox / MacOSX client)
> 
> Local Write / Read on an external RAID on NetBSD server:
> 
> boo# dd bs=1024k count=128 if=/dev/zero of=tmpfile
> 128+0 records in
> 128+0 records out
> 134217728 bytes transferred in 11 secs (12201611 bytes/sec)
> boo# dd bs=1024k count=128 if=/dev/zero of=tmpfile
> 128+0 records in
> 128+0 records out
> 134217728 bytes transferred in 9 secs (14913080 bytes/sec)
> boo# dd bs=1024k count=128 of=/dev/null if=tmpfile
> 128+0 records in
> 128+0 records out
> 134217728 bytes transferred in 7 secs (19173961 bytes/sec)
> boo# dd bs=1024k count=128 of=/dev/null if=tmpfile
> 128+0 records in
> 128+0 records out
> 134217728 bytes transferred in 7 secs (19173961 bytes/sec)
> 
> NFS Write / Read between NetBSD server and MacOSX client:
> 
> [icebox:~/Temp] westner% dd bs=1024k count=32 if=/dev/zero of=tmpfile
> 32+0 records in
> 32+0 records out
> 33554432 bytes transferred in 34 secs (986895 bytes/sec)
> [icebox:~/Temp] westner% dd bs=1024k count=32 if=/dev/zero of=tmpfile
> 32+0 records in
> 32+0 records out
> 33554432 bytes transferred in 31 secs (1082401 bytes/sec)
> [icebox:~/Temp] westner% dd bs=1024k count=32 of=/dev/null if=tmpfile
> 32+0 records in
> 32+0 records out
> 33554432 bytes transferred in 5 secs (6710886 bytes/sec)
> [icebox:~/Temp] westner% dd bs=1024k count=32 of=/dev/null if=tmpfile
> 32+0 records in
> 32+0 records out
> 
> On NetBSD I have built a custom kernel, with
> options         NMBCLUSTERS=1024
> maxusers        64              # estimated number of users
> I also have tried
> #options        BUFCACHE=20
> but that made things even worth, so I disabled it again.
> 
> nfsd consumes a lot of CPU cycles, which is somehow surprising (>90%)
> systat vm gives me below 5% for the disk
> 
> [...]
> 
> Any ideas on how to make this combo rock is very much appreciated. I 
> just can't believe that this is all I can get out on NetBSD.

Any idea what read/write parameter macos uses ? Maybe you could make
it larger (16k or 32k) ?
Did you try NFS mounting a single disk instead of the raid array ?
Maybe this one doesn't like small transactions.

--
Manuel Bouyer <bouyer@antioche.eu.org>
--