AW: [DRBD-user] Low speed sync with Gbit interface?

Martin Bene martin.bene at
Mon Jul 25 10:37:02 CEST 2005

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

> I mirror the DRBD device over a GBit interface and i only 
> have a speed 
> around of 50mb/s.
> Here the output of  cat /proc/drbd
> 0: cs:SyncSource st:Secondary/Secondary ld:Consistent
>     ns:37482508 nr:0 dw:0 dr:37489504 al:0 bm:5402 lo:96 
> pe:2221 ua:1749 
> ap:0
>         [========>...........] sync'ed: 42.0% (14435/24871)M
>         finish: 0:14:39 speed: 16,692 (50,888) K/sec

I don't think drbd or the network connection is the limiting factor
here; these are likely numbers for disk throughput. Drbd can't get
higher throughput than minimum of sustained read on source and sustained
write on target disk.

Bye, Martin

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