Was the cause of this ever determined? I am seeing something similar on some of my systems. Times are usually around 1s, sometimes higher. A recent high was 1.7s
# uname -r 4.15.0-193-generic
# time cat /sys/fs/cgroup/blkio/blkio.time_recursive 8:144 69349171178307 8:128 4718621058 8:112 4604996397 8:96 4625378704 8:80 4873085108 8:64 3777190161 8:48 4749702443 8:32 8346248400 8:16 9260262419 8:0 154939957376379
real 0m1.03s user 0m0.00s sys 0m1.03s
Was the cause of this ever determined? I am seeing something similar on some of my systems. Times are usually around 1s, sometimes higher. A recent high was 1.7s
# uname -r
4.15.0-193-generic
# time cat /sys/fs/ cgroup/ blkio/blkio. time_recursive
8:144 69349171178307
8:128 4718621058
8:112 4604996397
8:96 4625378704
8:80 4873085108
8:64 3777190161
8:48 4749702443
8:32 8346248400
8:16 9260262419
8:0 154939957376379
real 0m1.03s
user 0m0.00s
sys 0m1.03s