Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
If by limiting bandwidth you mean the "rate" configuration in the syncer section, then that does only limit the rate for background synchronisation. The "foreground" sync of current writes is not affected by that setting. That always happens as fast as possible. Regards Dominik On 04/26/2010 04:08 PM, atp wrote: > Luciano, > > Thanks for the response. The io scheduler is already deadline. The > "HDD" is a hardware raid array of 12 drives, and shows no sign of > excessive iowait or read exhaustion. > > I'm more interested in write bandwidth, not read, and how that competes > with the background replication bandwidth as a system is resyncing. > > The problem appears to be that writes coming into the primary are > replicated across to the secondary, which is also resyncing. These can > take a long time to fulfil, and I'd like to give them priority. Secondly > does limiting the bandwidth for drbd apply just to resync writes, or to > all drbd traffic. > > > andy > > On Mon, 2010-04-26 at 15:58 +0200, Luciano Rocha wrote: >> Your hdd bandwidth must be exhausted on reads. Try changing the IO scheduler to deadline. > Andrew Phillips > Head of Systems > > www.lmax.com > > Office: +44 203 1922509 > Mobile: +44 (0)7595 242 900 > > LMAX | Level 2, Yellow Building | 1 Nicholas Road | London | W11 4AN > > > > > The information in this e-mail and any attachment is confidential and is intended only for the named recipient(s). The e-mail may not be disclosed or used by any person other than the addressee, nor may it be copied in any way. If you are not a named recipient please notify the sender immediately and delete any copies of this message. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden. Any view or opinions presented are solely those of the author and do not necessarily represent those of the company. > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user > -- IN-telegence GmbH & Co. KG Oskar-Jäger-Str. 125 50825 Köln Registergericht Köln - HRA 14064, USt-ID Nr. DE 194 156 373 ph Gesellschafter: komware Unternehmensverwaltungsgesellschaft mbH, Registergericht Köln - HRB 38396 Geschäftsführende Gesellschafter: Christian Plätke und Holger Jansen