On Thu, Mar 3, 2022 at 6:27 PM Logan Gunthorpe <logang@xxxxxxxxxxxx> wrote: > > > > On 2022-03-02 6:40 p.m., Guoqing Jiang wrote: > > > > > > On 3/3/22 7:24 AM, Logan Gunthorpe wrote: > >> So I'm back to square one trying to find some performance improvements > >> on the write path. > > > > Did you try with group_thread_cnt? > > > > /sys/block/md0/md/group_thread_cnt > > Yes, I've tried group_thread_cnt and raised stripe_cache_size and a few > other parameters. Still get limited write performance. > Ermmmmmm - - - not speaking as any kind of expert - - - but - - - is this not where your Raid 10 shines - - - fastest write with the striping and and and. This may NOT be the case - - - tossing the idea into the ring (hoping the real 'experts' will chime in!). HTH
