----- Original Message ----- > From: "Andrew Martin" <amartin@xxxxxxxxxxx> > ----- Original Message ----- > > From: "Sitsofe Wheeler" <sitsofe@xxxxxxxxx> > ... > > > However, if I cat /sys/block/bcache0/bcache/cache/cache_available_percent > > > before and after performing the read, the value is always 100. Would > > > using > > > iflag=direct be better than iflag=nocache in this case? Is there a better > > > way to force data into the cache for this type of performance > > > benchmarking? > > > > The amount free isn't as important as the cache hits/misses ratio. > > Additionally I would recommend reading the TROUBLESHOOTING PERFORMANCE > > section mentioned above and posting your findings here because the > > bcache defaults often defeat first attempt synthetic benchmarking... > > Thanks, I will try fio with these recommended steps! > Sitsofe, Do you have an example fio job file that has worked well for testing bcache? Thanks, Andrew -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
