[DRBD-user] syncer performance problem

Tim Tregubov tim at zingweb.com
Mon Aug 2 20:21:30 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.

On Jul 30, 2004, at 5:40 PM, Lars Ellenberg wrote:

> if its not that,
> then try to set the rate to some large figure (100M or something)
> the syncer in drbd 0.7.0 follows a weird timer based pattern, which I
> personally dislike, but in our test environments it did work...

Thanks for the suggestions!

so I tried upgrading to 0.7.1  as suggested.  But I'm still getting 
5MB/s performance...

version: 0.7.1 (api:75/proto:74)
SVN Revision: 1479 build by root at topdog.cs.dartmouth.edu, 2004-08-02 
  0: cs:SyncSource st:Secondary/Secondary ld:Consistent
     ns:149232 nr:0 dw:0 dr:156000 al:0 bm:178822 lo:0 pe:503 ua:1692 
         [>...................] sync'ed:  0.1% (1430355/1430498)M
         finish: 92:28:02 speed: 4,088 (4,904) K/sec

Course it's now displaying the progress of the sync correctly...  So 
that's is fixed - cool.  But its still darn slow.

Jeff:  What kind of speeds are you getting on the 3Ware now?  It looks 
like your setup if pretty close to mine except that I have xeons 
instead of athlons.

My syncer rate was set at 1G but I changed it to 100M just to match 
what you suggested.  Still the same.

Thanks for all the help though!
Any more suggestions?  :-D


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