Re: [parisc-linux] ext3 perf patch#4

[Joel Soete <soete.joel@tiscali.be>]

Grant Grundler wrote:
> On Sun, Mar 27, 2005 at 01:49:06PM +0000, Joel Soete wrote:
> ...
> 
>># time rsync -a /Debian-apt/SRC/linux-2.6.12-rc1-pa4-050327 /Sources/CVS-tst
>>
>>real    3m34.512s
>>user    1m0.730s
>>sys     1m6.440s
> 
> 
> Joel,
> thanks for the data!
> 
> But I don't know what it means.
> Was the performance bad for that box before?
> 
:-)
No just looks like as before:
# uname -a
Linux hpalin 2.6.12-rc1-pa1-c110 #2 Sat Mar 19 23:36:05 CET 2005 parisc GNU/Linux
# time rsync -a /Debian-apt/SRC/linux-2.6.12-rc1-pa4-050327 /Sources/CVS-tst

real    3m44.365s
user    1m0.350s
sys     1m11.120s


> 
>>I prefer simply tar and so:
>># cd /Debian-apt/SRC
>># time tar -cslpf /chroot/Develop/linux-2.6.12-rc1-pa4.tar2 
>>linux-2.6.12-rc1-pa4-050327
>>
>>real    0m38.487s
>>user    0m3.690s
>>sys     0m18.650s
>>
>>a sample iostat too :-)
>>avg-cpu:  %user   %nice    %sys %iowait   %idle
>>          15.70    0.00   47.00   37.30    0.00
>>
>>Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
>>sda               2.50         0.00        19.60          0        196
>>sdb             297.30      5906.40        89.20      59064        892
>>sdc              15.10         0.00      7712.80          0      77128
> 
> ...
> 
> That looks fine.
> 
Yes, sorry for confusion (I would just show that it works and nothing was broken)

...
> 
> I probably should have posted that speculation to the mailing list
> instead of in the commit log...I was quite tired at that point.
> 
Don't wory I would have to be disturbe or confused by the song of a bird in the garden ?-)
(the 32bit bug has obviously nothing to do with that)

> That could only be true if ext3 perf issue only shows up in 64-bit kernels.
> I don't recall if anyone posted perf results for 32-bit kernels.
> 
TBH, the 2 64bit system I have the oportunity to test (b2k up, n4k smp) are so confortable (well n4k ask many time for self test on 
reboot) from speed point of view that I never noticed ext[23] lack of perf ;-)

Thanks,
	Joel
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