Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Wed, 7 Apr 2004, Andreas Semt wrote: > Lars Marowsky-Bree wrote: > > > > > And: What maximum performance i can expect with such a hardware > > > configuration (production use experience anybody)? > > > > > > You could easily see >80MB/s. This will to a large degree depend on your > > physical disks. > > > > Not with my configuration :-( > i only get: > > --- snip --- > testnode1:~# cat /proc/drbd > version: 0.6.12 (api:64/proto:62) > > 0: cs:SyncingAll st:Primary/Secondary ns:1235920 nr:0 dw:0 dr:1236060 pe:881 > ua:0 > [>...................] sync'ed: 0.3% (96043/96256)M > finish: 3:47:11h speed: 7,245 (7,245) K/sec > --- snap --- > > and here my config: > > --- snip --- > testnode2:~# drbdsetup /dev/nb0 show > Lower device: 58:03 (/dev/lvmvg/backup) > Disk options: > Local address: 10.1.1.2:7789 > Remote address: 10.1.1.1:7789 > Wire protocol: C > Net options: > timeout = 6.0 sec > tl-size = 5000 > connect-int = 10 sec > ping-int = 10 sec > sndbuf-size = 131070 > sync-min = 40960 KB/sec > sync-max = 81920 KB/sec > sync-nice = 1 > --- snap --- > > What can cause this slowly drbd performance? Any suggestions? I've used NetIO > to get a feeling for the GBit Ethernet fitness and this brought up a rate > (with TCP/IP) of around 100 MByte/sec. So the network works fine, i think. > Are the network and disks on a 64-Bit PCI channel and are these working in 64 bit mode? 32-bit PCI bus will not manage. But even a 32 bit bus should do more then 7MB/s, so something is wrong with your raid5 or network card/driver. Are there any messages in /var/log/messages? Holger