Bonjour Aur?lien, Aurelien ROUGEMONT wrote: > root at test4:/var/www# dd if=/dev/zero of=./test count=10000 bs=1024 > 10000+0 records in > 10000+0 records out > 10240000 bytes (10 MB) copied, 17.8632 s, 573 kB/s I have posted the exact same results just a few days ago (using the sid package backported to lenny): http://gluster.org/pipermail/gluster-users/2010-March/004240.html BTW, this seems to be related to the block size. Performances might be very different with different block sizes: gl2:/web-nunki# dd if=/dev/zero of=./test count=10000 bs=2000 10000+0 enregistrements lus 10000+0 enregistrements ?crits 20000000 bytes (20 MB) copied, 3,25723 s, 6,1 MB/s gl2:/web-nunki# dd if=/dev/zero of=./test count=10000 bs=10000 10000+0 enregistrements lus 10000+0 enregistrements ?crits 100000000 bytes (100 MB) copied, 3,30255 s, 30,3 MB/s gl2:/web-nunki# dd if=/dev/zero of=./test count=10000 bs=40000 10000+0 enregistrements lus 10000+0 enregistrements ?crits 400000000 bytes (400 MB) copied, 5,97635 s, 66,9 MB/s gl2:/web-nunki# dd if=/dev/zero of=./test count=10000 bs=80000 10000+0 enregistrements lus 10000+0 enregistrements ?crits 800000000 bytes (800 MB) copied, 9,12432 s, 87,7 MB/s gl2:/web-nunki# dd if=/dev/zero of=./test count=10000 bs=160000 10000+0 enregistrements lus 10000+0 enregistrements ?crits 1600000000 bytes (1,6 GB) copied, 15,0147 s, 107 MB/s gl2:/web-nunki# dd if=/dev/zero of=./test count=10000 bs=320000 10000+0 enregistrements lus 10000+0 enregistrements ?crits 3200000000 bytes (3,2 GB) copied, 28,8645 s, 111 MB/s TBH, I don't know what to conclude from these results. Regards, -- Olivier
