Am 20.05.2011 10:23, schrieb Felix Frank:
On 05/20/2011 10:12 AM, Daniel Meszaros wrote:
I tried syncing with 10M last night and indeed it became faster than
before and was around 10MB/s. Using "drbdsetup /dev/drbd0 syncer -r 20M"
and so on I could increase the sync speed up to 70M ... then it
interrupted and a new bitmap check started.
Is it possible that you're facing some sort of weird networking issues?
You stated earlier that you were doing "netio" benchmarks. I trust that
those exclusively used the link that DRBD uses as well?
Of course. But AFAIK "netio" just measures the network throughput. And
as "netio" showed > 200 MByte/s I don't expect the network to be to blame.
If you can go to 50MBps, that should get you somewhere, even if it takes
some time, no?
The 1st problem is that it interrupted after a while (didn't just run
slow but continuously but stalled after a while) and 2ndly it disturbs
the virtual guests' services. Therefore I tend to search for some wrong
setting in relationship with the I/O of the disks. ;-)
CU,
Daniel.
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