[DRBD-user] slow synchronisation

Philipp Reisner philipp.reisner at linbit.com
Mon Sep 6 10:17:48 CEST 2004

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

> Hello,
> Hardware: Tyan Thunder i7501 Pro, 512MB RAM, Intel Xeon 2400, 3Ware
> Escalade 7506-4P RAID Controller, 3x Seagate Baracuda 160GB (RAID 5), 2x
> Intel Etherexpress 1000MBit (no Jumbo-Frames, MTU on default value)
> Software: Debian GNU/Linux Woody, Kernel 2.4.26, DRDB 0.7.3
> Network link tested with iptraf. I sent a 190MB Package over the two
> gigabit cards and measured a speed of 12MB/s. So I think the network cards
> are alright. I tried with bonding mode 0 and 1. I can´t test it without
> bonding, because the RAID on the second node rebuilds at the moment.

If I would test the gigabit NICs of a pair of such servers I would not
be satisfied with 12MB/sec. I would expect 120 mega byte per second.

> I dont tested the harddisks.

Have you got the 3ware software installed, do you know if the
raid was just in the progress of rebuilding ?

: Dipl-Ing Philipp Reisner                      Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH          Fax +43-1-8178292-82 :
: Schönbrunnerstr 244, 1120 Vienna, Austria    http://www.linbit.com :

More information about the drbd-user mailing list