Re: Reiser4 slowdown gone

[Joe Feise <jfeise@feise.com>]

Sander wrote on 01/29/06 23:25:

> Andrew Morton wrote (ao):
>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.16-rc1/2.6.16-rc1-mm4/
> 
>> +reiser4-big-update-bug-fix-for-readpage-fix.patch
>> +reiser4-warnings-cleanup.patch
>> +reiser4-do-not-use-get_user_pages-and-do-not-check.patch
>>
>>  reiser4 fixes and cleanups
> 
> Jumping from 2.6.15-rc1-mm1 to 2.6.16-rc1-mm4.
> 
> For me the Reiser4 slowdown[1] reported on the Reiserfs mailinglist are
> gone with this kernel.
> 
> [1] http://humilis.net/reiser4slowdown.html
> 


FWIW, I just ran these tests on 2.6.16-rc1-mm3:
kernel: 2.6.16-rc1-mm3
OS: Slackware 10.2 x86
Compiler: gcc (GCC) 3.3.6
Disk: SCSI on Adaptec 29160
single disk, no raid/lvm/etc.
# for i in `seq 4`; do echo "foo" > test && time vim +"s/foo/bar/" +"wq" test &>
 /dev/null ; done

real    0m2.637s
user    0m0.032s
sys     0m0.040s

real    0m2.139s
user    0m0.016s
sys     0m0.008s

real    0m2.137s
user    0m0.020s
sys     0m0.016s

real    0m2.137s
user    0m0.020s
sys     0m0.008s

# strace -T -e sync,fsync ./reiser4-fsync
sync()                                  = 0 <2.308290>
fsync(3)                                = 0 <0.071363>

-Joe