Re: reiserfs, xfs, ext2, ext3

[Daniel Podlejski]

On linux-kernel, [e-mail] (Andi Kleen) wrote:
:  On one not very scientific test: unpacking and deleting a cache hot 40MB/230MB
:  gzipped/unzipped tar on ext2 and xfs on a IDE drive on a lowend SMP box.
:  
:  XFS (very recent 2.4.4 CVS, filesystem created with mkxfs defaults)
:  
: > time tar xzf ~ak/src.tgz 
:  real    1m58.125s
:  user    0m16.410s
:  sys     0m44.350s
: > time rm -rf src/
:  real    0m50.344s
:  user    0m0.190s
:  sys     0m13.950s
:  
:  ext2 (on same kernel as above)
:  
: > time tar xzf ~ak/src.tgz 
:  
:  real    1m26.126s
:  user    0m16.100s
:  sys     0m36.080s
:  
: > time rm -rf src/
:  
:  real    0m1.085s
:  user    0m0.160s
:  sys     0m0.930s

And another test:

ext2:

root@witch:/mobile:# time tar xzf /arc/test.tar.gz

real    5m25.249s
user    1m33.430s
sys     0m31.710s

root@witch:/mobile:# time rm -rf test/

real    0m8.843s
user    0m0.000s
sys     0m0.420s

xfs:

root@witch:/mobile:# time tar xzf /arc/test.tar.gz

real    5m23.744s
user    1m34.800s
sys     0m39.100s
root@witch:/mobile:# time rm -rf test/

real    0m1.364s
user    0m0.030s
sys     0m0.430s

test.tar.gz is tree created by script:

#!/bin/bash

for lev1 in aa bb cc dd ee ff gg hh ii jj kk ll
do

	mkdir $lev1
	cd $lev1

	for lev2 in 0 1 2 3 4 5 6 7
	do
		mkdir $lev2
		cd $lev2

		for fname in a b c d e f g h i
		do
			dd if=/dev/urandom of=$fname bs=4k count=1024
		done

		cd ..
	done

	cd ..
done

-- 
Daniel Podlejski <[e-mail]>
   ... When you're talkin to yourself and nobody's home
   You can fool yourself, you came in this world alone ...