On Tue, 29 Feb 2000, James Manning wrote:
> [ Tuesday, February 29, 2000 ] Christian Robottom Reis wrote:
> > I've got the simple scripts I used to do the benchmarks here and if
> > somebody wants to have a look, feel free.
>
> go ahead and mail them to the list as attachments. Might make for
> more scripts to shove into tiotest/funnyscripts/
Nothing fancy, but it works. Anyone interested, it's for comparing
chunk-sizes and the -Rstripe effect - and FWIW I've concluded that for me
they make very little difference. Anyone care to run and differ, fine.
Cheers,
--
_/\ Christian Reis is sometimes [EMAIL PROTECTED]
\/~ suicide architect | free software advocate | mountain biker
#!/bin/sh
# runs bonnie and tiobench.pl until you're tired of them
# be smart: boot with mem=16M and init 1 before running this
# if you want half-decent numbers
device=/dev/md3
half_one=/dev/sda10
half_two=/dev/sdb10
suffix=14-readbalance
outputdir=./results
# this is where we're mounting the raid test filesystem
benchdir=/bench
# size of the testfiles for both bonnie and tiotest
size=512
numruns=2
# time we need to sleep before resync finishes - empirical?
snooze=5m
bonnie=/usr/src/bonnie/Bonnie
tiobench=/usr/src/tiotest-0.24/tiobench.pl
# sekrit ninja crypto
flag=`echo --qd0kkx-enqbd | tr 0a-z a-z`
function doit()
{
sed -e s/@@CHUNK/${1}k/ < raidtab.tp > raidtab
mkraid --configfile raidtab $flag $device
stride=`expr $1 / $2`
block=`expr $2 \* 1024`
echo Stride is $stride and Block is $block
sync
mke2fs -b $block -R stride=$stride $device
sleep $snooze # so the raid1 can sync in peace
sync
cat /proc/mdstat
sync
mount $device $benchdir
echo Chunk is ${1}k, Stride is $stride and Block is ${block}k >>
${outputdir}/bonnie.${suffix}
echo Chunk is ${1}k, Stride is $stride and Block is ${block}k >>
${outputdir}/tiobench.${suffix}
$bonnie -s $size -d /bench >> ${outputdir}/bonnie.${suffix}
$tiobench --dir /bench --size $size --numruns $numruns >>
${outputdir}/tiobench.${suffix}
}
function close()
{
umount $device
umount $benchdir
raidstop $device
}
mkdir -p ${outputdir}
cat << __EOF__ > raidtab.tp
raiddev $device
raid-level 1
nr-raid-disks 2
chunk-size @@CHUNK
persistent-superblock 1
device $half_one
raid-disk 0
device $half_two
raid-disk 1
__EOF__
for f in 4 8 16 32 64 128 256; do
for h in 1 2 4 ; do
echo Benchmarking with ${f}k chunksize and ${h}k blocksize
close
doit $f $h
done
done
close
rm raidtab.tp
rm raidtab
