[DRBD-user] DRBD - Slow Performance

Digimer linux at alteeve.com
Mon Feb 15 23:30:02 CET 2010

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

Dan Lavu wrote:
> Digi,
> Thanks for advance again, but I've already tried this. I'm still pegged
> at 2MB/s. I've exhausted IRC any google searches involving DRBD slow
> sync. I'm really contemplating rebuilding the machine with a RAID 10 to
> enhance performance but I still do not know if this is going to resolve
> the issue, any thoughts about this? Thanks in advance.
> Best Regards,
> Dan Lavu

How is performance on the local disk? Have you checked using something 
like: fdisk -tT /dev/sda? Also, what performance do you get if you write 
a large file to the array?

What I am wondering is; Is the performance limitation a DRBD issue, a 
disk issue or a sync'er issue. What kind of performance do you get 
sending a file over the DRBD's network interfaces directly (not writing 
to the DRBD disk)?


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