look at the cpu consumption. On 11/26/05, JaniD++ <djani22@xxxxxxxxxxxxx> wrote: > Hello list, > > I have searching the bottleneck of my system, and found something what i > cant cleanly understand. > > I have use NBD with 4 disk nodes. (raidtab is the bottom of mail) > > The cat /dev/nb# >/dev/null makes ~ 350 Mbit/s on each nodes. > The cat /dev/nb0 + nb1 + nb2 + nb3 in one time parallel makes ~ 780-800 > Mbit/s. - i think this is my network bottleneck. > > But the cat /dev/md31 >/dev/null (RAID0, the sum of 4 nodes) only makes > ~450-490 Mbit/s, and i dont know why.... > > Somebody have an idea? :-) > > (the nb31,30,29,28 only possible mirrors) > > Thanks > Janos > > raiddev /dev/md1 > raid-level 1 > nr-raid-disks 2 > chunk-size 32 > persistent-superblock 1 > device /dev/nb0 > raid-disk 0 > device /dev/nb31 > raid-disk 1 > failed-disk /dev/nb31 > > raiddev /dev/md2 > raid-level 1 > nr-raid-disks 2 > chunk-size 32 > persistent-superblock 1 > device /dev/nb1 > raid-disk 0 > device /dev/hb30 > raid-disk 1 > failed-disk /dev/nb30 > > raiddev /dev/md3 > raid-level 1 > nr-raid-disks 2 > chunk-size 32 > persistent-superblock 1 > device /dev/nb2 > raid-disk 0 > device /dev/nb29 > raid-disk 1 > failed-disk /dev/nb29 > > raiddev /dev/md4 > raid-level 1 > nr-raid-disks 2 > chunk-size 32 > persistent-superblock 1 > device /dev/nb3 > raid-disk 0 > device /dev/nb28 > raid-disk 1 > failed-disk /dev/nb28 > > raiddev /dev/md31 > raid-level 0 > nr-raid-disks 4 > chunk-size 32 > persistent-superblock 1 > device /dev/md1 > raid-disk 0 > device /dev/md2 > raid-disk 1 > device /dev/md3 > raid-disk 2 > device /dev/md4 > raid-disk 3 > > > - > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Raz - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
