Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hey there, the speed is significatnly higher due to the Samsung 840 SSD's performance plus the performance of the raid controller. And according to you, if I use protocol A or C is pretty much irrelevant to the performance of the DRBD, since it's always only as fast as the slowest node? Thanks in advance, Tim -----Ursprüngliche Nachricht----- Von: Sebastian Riemer [mailto:sebastian.riemer at profitbricks.com] Gesendet: Donnerstag, 25. April 2013 17:58 An: GG-Net Mailing Cc: drbd-user at lists.linbit.com Betreff: Re: AW: [DRBD-user] Performance Issues on version 8.3.13 Hi Tim, from my experience there is no noticeable benefit of using Protocol A instead of C. So you're doing random write IO with fio? The 500kb/s are what a single HDD is only capable of. The higher number on the disconnected primary is caused by caching. Cheers, Sebastian On 25.04.2013 17:18, GG-Net Mailing wrote: > Well, that's why i use Protocol A so i have asynchronous sync. > > I tested using FIO, too. All my results there around 40mb/s with drbd disconnected. > > Once I started DRBD I had round about 500kb/s in all of my tests. > > > So the problem isn't the throughput of the network. > > That's why I'm asking, if there is any known issue or workaround regarding this.