On Mon, Mar 25, 2024 at 03:14:19PM -0700, Bart Van Assche wrote: > On my test setup (x86 VM with 72 CPU cores) this patch results in 2.9% more > IOPS. IOPS have been measured as follows: > > $ modprobe null_blk nr_devices=1 completion_nsec=0 > $ fio --bs=4096 --disable_clat=1 --disable_slat=1 --group_reporting=1 \ > --gtod_reduce=1 --invalidate=1 --ioengine=psync --ioscheduler=none \ > --norandommap --runtime=60 --rw=randread --thread --time_based=1 \ > --buffered=0 --numjobs=64 --name=/dev/nullb0 --filename=/dev/nullb0 And how does it behave when you have multiple request_queues sharing a tag_set with very unevent use that could cause one to starve all the tags? Because that is what this code exists for.
