----- Original Message ----- > From: "Sitsofe Wheeler" <[email protected]> ... > > 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! Andrew -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
