[DRBD-user] Protocol A vs Protocol C performance issue?

Lionel Sausin ls at numerigraphe.com
Tue Oct 20 17:47:06 CEST 2015

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

Le 20/10/2015 17:30, Joeri Casteels a écrit :
>> Protocol A an async, C is sync. So you're probably hitting the network
>> limit on C.
> I don’t think so since it has a direct 20G trunk in-between with perf i get 19.6Gbit/s on single threat. With A (async when i monitor the network it also hits 2x the network speed as C does)
"sync" means the round-trip time (down to the remote disks) is what 
counts, not the bandwidth.

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