[DRBD-user] DRBD resync QoS

wang xuchen ben.wxc at gmail.com
Wed Jun 22 03:51:48 CEST 2011

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


Thanks for your reply.

I come up with the number 300M from DRBD official website "A good rule of
thumb for this value(rate parameter) is to use about 30% of the available
replication bandwidth. ". I use 10G Ethernet card for replication traffic,
1024M * 0.3 is 300M. What wrong with my calculation?

Commit yourself to constant self-improvement

On Tue, Jun 21, 2011 at 7:49 PM, Digimer <linux at alteeve.com> wrote:

> On 06/21/2011 06:42 PM, wang xuchen wrote:
>>   syncer {
>>     rate 300M;
>>     verify-alg crc32c;
>>     al-extents 3800;
>>   }
> Drop that to about 75% of your maximum sustainable throughput (at most,
> ideally even less).
> The problem you are describing is the reason why the default is low. :)
> --
> Digimer
> E-Mail:              digimer at alteeve.com
> Freenode handle:     digimer
> Papers and Projects: http://alteeve.com
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> "I feel confined, only free to expand myself within boundaries."
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