Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Dam Thanh Tung wrote: > After synchronizing a couple of our disk, we reformat it with lustre > file system format and start copying our data to drbd disk, but its I/O > wait is too high ( about 25% ) and the copy speed from our web client to > drbd device is too slow, only about 13MB/s although we're using 1Gb > Ethernet !!! This blog entry has a few important tips: http://fghaas.wordpress.com/2007/06/22/performance-tuning-drbd-setups/ Either al-extents or unplug-watermark would likely provide a huge boost in performance. There is also a webinar on performance tuning here: http://www.linbit.com/en/education/on-demand-webinars/drbd-performance-tuning/ Cheers, -Charlie