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List: linux-coda
Subject: rpc2 fixes solve my slowness problem
From: Greg Troxel <gdt () ir ! bbn ! com>
Date: 2003-03-24 19:22:32
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very cool on the fixes. I wonder if the corruption one explains all
my client reintegration disasters.
I have noticed slow writes from my office machine to the server for a
long time, and never spent the time to figure it out. It was the only
client I had a problem with - the others all have slower network
connections, and my nb tends to be in WD mode, even when local, so I
don't notice. Things are much improved after upgrading rpc2 on the
server!
Time to write a megabyte went down drastically; now I get about 850
KB/s. While not blazing (100 Mb/s Ethernet), this is with an old
server (P6-200 and over IPsec. The server process took 3 seconds of
CPU time to process a 10 MB write; this is higher than I expected.
148 ~/%co/FOO > time dd if=/dev/zero bs=32k count=32 of=test1
32+0 records in
32+0 records out
1048576 bytes transferred in 0.011 secs (95325090 bytes/sec)
real 0m50.895s
user 0m0.000s
sys 0m0.019s
gdt 155 ~/%co/FOO > time dd if=/dev/zero bs=32k count=32 of=test2
32+0 records in
32+0 records out
1048576 bytes transferred in 0.010 secs (104857600 bytes/sec)
real 0m1.273s
user 0m0.000s
sys 0m0.012s
159 ~/%co/FOO > time dd if=/dev/zero bs=32k count=320 of=test5
320+0 records in
320+0 records out
10485760 bytes transferred in 0.250 secs (41943040 bytes/sec)
real 0m11.565s
user 0m0.001s
sys 0m0.099s
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