Hi Yi Zhang,
thanks for testing the patches.
Can you provide more info on the time it took with both kernels ?
Hi Max
Sorry for the late response, here are the test results/dmesg on
debug/non-debug kernel with your patch:
debug kernel: timeout
# time nvme connect -t rdma -a 172.31.0.202 -s 4420 -n testnqn
real 0m16.956s
user 0m0.000s
sys 0m0.237s
# time nvme reset /dev/nvme0
real 1m33.623s
user 0m0.000s
sys 0m0.024s
# time nvme disconnect-all
real 1m26.640s
user 0m0.000s
sys 0m9.969s
host dmesg:
https://pastebin.com/8T3Lqtkn
target dmesg:
https://pastebin.com/KpFP7xG2
non-debug kernel: no timeout issue, but still 12s for reset, and 8s
for disconnect
host:
# time nvme connect -t rdma -a 172.31.0.202 -s 4420 -n testnqn
real 0m4.579s
user 0m0.000s
sys 0m0.004s
# time nvme reset /dev/nvme0
real 0m12.778s
user 0m0.000s
sys 0m0.006s
# time nvme reset /dev/nvme0
real 0m12.793s
user 0m0.000s
sys 0m0.006s
# time nvme reset /dev/nvme0
real 0m12.808s
user 0m0.000s
sys 0m0.006s
# time nvme disconnect-all
real 0m8.348s
user 0m0.000s
sys 0m0.189s
These are very long times for a non-debug kernel...
Max, do you see the root cause for this?
Yi, does this happen with rxe/siw as well?
