Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hello ! I've sucsessfully set up DRBD 8.0pre6 on 2 Ubuntu Server and XEN based Xeon Machines. I did some benchmarks and I'm not fully content with the performance. The machines are connected crossover via Fast Gigabit Adapters (PCI-X) with Jumboframes (MTU 9000) and netio shows near wirespeed throupout of about 116000 KByte/s in each direction. While benchmarking I saw that there was less data transferred over the wire than the benchmark had to write. Is there any compression used in the network protocol of drbd ? Is it possible to switch this off because my Hardware RAID 1 internal SATA storages are not capable of either reading or writing with Gigbit performance. Is there best practice setting of max-buffers max-epoch-size sndbuf-size or other settings for a fast Gigabit interconnect and Protocol C usage ? At the moment performance decrease in writing speed of underlying device/drbd device is about 25%. Is that ok ? -- __________________________________________________ Ralf Schenk fon (02 41) 9 91 21-0 fax (02 41) 9 91 21-59 rs at databay.de Databay AG Hüttenstraße 7 D-52068 Aachen www.databay.de _________________________________________________