On 12/15/2015 02:44 PM, Dallas Clement wrote: > Wow! Thanks a ton Phil. This is incredibly helpful! It looks like I > need to do some experimenting with smaller chunk sizes. Just one more > question: what stripe cache size do you recommend for this system? > It has 8 GB of RAM, but can't use all of it for RAID as this NAS needs > to run multiple applications. I understand that in the >= 4.1 kernels > the stripe cache grows dynamically. I don't really know. I use the default 256, but all of my parity raid arrays have 16k chunks and are relatively lightly loaded. Consider sampling stripe_cache_active once a second for a normal workday on real workloads to figure out what you need. Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
