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2019 Nov 30
0
Re: [PATCH nbdkit 2/3] filters: stats: Measure time per operation
...otal: 2300 ops, 6 GiB, 2.150 s, 2925.71 wMiB/s
write: 1271 ops, 1.14 GiB, 0.398 s, 2922.22 MiB/s
zero: 1027 ops, 4.86 GiB, 0.012 s, 414723.03 MiB/s
extents: 1 ops, 2.00 GiB, 0.000 s, 120470559.51 MiB/s
flush: 1 ops, 1.200 s
2. read image from nbdkit:
total: 1272 ops, 6 GiB, 2.150 seconds, 2925.71 rMiB/s
read: 1271 ops, 1.14 GiB, 0.398 s, 2922.22 MiB/s
extents: 1 ops, 2.00 GiB, 0.000 s, 120470559.51 MiB/s
3. read/write, e.g running a vm from image served by nbdkit
total: 5998 ops, 8.50 GiB, 125.000 s, 20.48 rMiB/s, 49.15 wMiB/s
write: 1271 ops, 1.14 GiB, 0.398 s, 2922.22 MiB/s
read: 3000 ops, 2...
2019 Nov 30
2
Re: [PATCH nbdkit 2/3] filters: stats: Measure time per operation
On Sat, Nov 30, 2019 at 02:17:06AM +0200, Nir Soffer wrote:
> Previously we measured the total time and used it to calculate the rate
> of different operations. This is incorrect and hides the real
> throughput. A more useful way is to measure the time we spent in each
> operation.
>
> Here is an example run with this change:
>
> $ ./nbdkit --foreground \
> --unix