[DRBD-user] bad sync performance !

Musard, Kris Kris.Musard at spirentcom.com
Thu Dec 29 21:58:12 CET 2005

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


Are you using linux channel bonding in round robin mode with the Gb Nics?
If so, there is known problem of packets bieng received out of order and
reducing performance.

> -----Original Message-----
> From:	Stefan Kerkemeier [SMTP:stefanke at micodat.com]
> Sent:	Thursday, December 01, 2005 3:13 PM
> To:	drbd-user at lists.linbit.com
> Cc:	philipp.reisner at linbit.com
> Subject:	[DRBD-user] bad sync performance !
> 
> Hi,
> 
> I use gbit fibre nics(e1000), private node connection (directly linked)
> but the DRBD sync performance is really bad (see sync speed below)!
> 
> syncer {
>     rate 150M;
>     group 1;
>     al-extents 257;
> }
> 
> [======>.............] sync'ed: 34.8% (77768/119260)M
>         finish: 1:45:20 speed: 12,572 (11,944) K/sec
> 
> I have validated the connection speed with iperf so there must be a
> specific drbd problem!
> 
> btw.: the hdd (raid5) perform very well (>90Mbyte/s)
> 
> Any hints ?
> 
> 
> cheers Stefan
> 
> 
> To: drbd-user at lists.linbit.com
> Cc: philipp.reisner at linbit.com
> 
> 
> _______________________________________________
> drbd-user mailing list
> drbd-user at lists.linbit.com
> http://lists.linbit.com/mailman/listinfo/drbd-user
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/ms-tnef
Size: 2735 bytes
Desc: not available
URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20051229/e692d47a/attachment.bin>


More information about the drbd-user mailing list