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e4dd8a0)
Power of 2 is just confusing for latencies, make the series
more natural by doing 1, 2, 4, 10, 20, 50, etc.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
bw (KiB/s) : min= 0, max= 1196, per=51.00%, avg=664.02, stdev=681.68
cpu : usr=1.49%, sys=0.25%, ctx=7969
IO depths : 1=0.1%, 2=0.3%, 4=0.5%, 8=99.0%, 16=0.0%, 32=0.0%, >32=0.0%
bw (KiB/s) : min= 0, max= 1196, per=51.00%, avg=664.02, stdev=681.68
cpu : usr=1.49%, sys=0.25%, ctx=7969
IO depths : 1=0.1%, 2=0.3%, 4=0.5%, 8=99.0%, 16=0.0%, 32=0.0%, >32=0.0%
- lat (msec): 2=1.6%, 4=0.0%, 8=3.2%, 16=12.8%, 32=38.4%, 64=24.8%, 128=15.2%
- lat (msec): 256=4.0%, 512=0.0%, 1024=0.0%, >=2048=0.0%
+ lat (msec): 2=1.6%, 4=0.0%, 10=3.2%, 20=12.8%, 50=38.4%, 100=24.8%,
+ lat (msec): 250=15.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2048=0.0%
The client number is printed, along with the group id and error of that
thread. Below is the io statistics, here for writes. In the order listed,
The client number is printed, along with the group id and error of that
thread. Below is the io statistics, here for writes. In the order listed,
time from when IO leaves fio and when it gets completed.
The numbers follow the same pattern as the IO depths,
meaning that 2=1.6% means that 1.6% of the IO completed
time from when IO leaves fio and when it gets completed.
The numbers follow the same pattern as the IO depths,
meaning that 2=1.6% means that 1.6% of the IO completed
- within 2 msecs, 16=12.8% means that 12.8% of the IO
- took more than 8 msecs, but less than (or equal to) 16 msecs.
+ within 2 msecs, 20=12.8% means that 12.8% of the IO
+ took more than 10 msecs, but less than (or equal to) 20 msecs.
After each client has been listed, the group statistics are printed. They
will look like this:
After each client has been listed, the group statistics are printed. They
will look like this:
switch (msec) {
default:
index++;
switch (msec) {
default:
index++;
index++;
case 2 ... 3:
index++;
index++;
case 2 ... 3:
index++;
- fprintf(f_out, " lat (msec): 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%, 32=%3.1f%%, 64=%3.1f%%, 128=%3.1f%%\n", io_u_lat[0], io_u_lat[1], io_u_lat[2], io_u_lat[3], io_u_lat[4], io_u_lat[5], io_u_lat[6]);
- fprintf(f_out, " lat (msec): 256=%3.1f%%, 512=%3.1f%%, 1024=%3.1f%%, >=2048=%3.1f%%\n", io_u_lat[7], io_u_lat[8], io_u_lat[9], io_u_lat[10]);
+ fprintf(f_out, " lat (msec): 2=%3.1f%%, 4=%3.1f%%, 10=%3.1f%%, 20=%3.1f%%, 50=%3.1f%%, 100=%3.1f%%\n", io_u_lat[0], io_u_lat[1], io_u_lat[2], io_u_lat[3], io_u_lat[4], io_u_lat[5]);
+ fprintf(f_out, " lat (msec): 250=%3.1f%%, 500=%3.1f%%, 750=%3.1f%%, 1000=%3.1f%%, >=2000=%3.1f%%\n", io_u_lat[6], io_u_lat[7], io_u_lat[8], io_u_lat[9], io_u_lat[10]);
if (td->description)
fprintf(f_out, "%s\n", td->description);
if (td->description)
fprintf(f_out, "%s\n", td->description);