Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
The mtu is small but I don't think it's the culprit here. Perhaps if the resync was getting 30 or 40MB/sec you could blame the mtu. How much cpu is being used during the resync operation (on both machines)? paul Todd Denniston wrote: > Stefan Kerkemeier wrote: > >> please look at this: >> >> kernel: e1000: eth1: e1000_watchdog: NIC Link is Up 1000 Mbps Full >> Duplex > > > Looks to me like the hardware may be up to it, that looks close to > what my cards I have. > >> >> ifconfig eth1 >> eth1 Link encap:Ethernet HWaddr 00:03:47:E0:EB:B1 >> inet addr:10.0.0.3 Bcast:10.0.0.255 Mask:255.255.255.0 >> inet6 addr: fe80::203:47ff:fee0:ebb1/64 Scope:Link >> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > > <SNIP> > > But your MTU looks a bit low to get the performance out of the cards, try > > ifconfig eth1 mtu 6000 > > on both systems. > > IIRC the HOWTO used to indicate 9000 instead of my 6k, but for all my > hardware 6k seemed to work out near optimal, and I can now see average > syncs of ~22000KB/s (which is probably maxing out my pathetic raid > boxes). > > some advice for it seems to be over on the wiki faq now: > http://wiki.linux-ha.org/DRBD_2fFAQ#head-3d7a189ec67920e48d69e294610914e66571de14 > > > and a mention of it in the old article. > http://www.drbd.org/drbd-article.html > >> ./iperf -c 10.0.0.2 >> ------------------------------------------------------------ >> Client connecting to 10.0.0.2, TCP port 5001 >> TCP window size: 16.0 KByte (default) >> ------------------------------------------------------------ >> [ 3] local 10.0.0.3 port 32788 connected with 10.0.0.2 port 5001 >> [ ID] Interval Transfer Bandwidth >> [ 3] 0.0-10.0 sec 1.02 GBytes 872 Mbits/sec >> >> >> It´s obvious that it is a gbit link!!! >> >> drbdsetup /dev/drbd0 show > > <SNIP> > >> rate = 153600 KB/sec >> group = 1 >> al-extents = 257 >> >> system: suse sles9, drbd 0.7.14 >> >> And now, any ideas? >> >> cheers >> Stefan >> > <SNIP> > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user