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Save EugenMayer/ae102b41a190590f0f03487462f1f3be to your computer and use it in GitHub Desktop.
| # we no longer use /tmp sinc it is a tmpfs / in memory | |
| mkdir ~/tmp | |
| cd ~/tmp | |
| sysbench --file-fsync-freq=1 --num-threads=16 --test=fileio --file-total-size=1G --file-test-mode=rndrw --file-rw-ratio=2 cleanup > /dev/null | |
| sysbench --file-fsync-freq=1 --num-threads=16 --test=fileio --file-total-size=1G --file-test-mode=rndrw --file-rw-ratio=2 prepare > /dev/null | |
| sysbench --file-fsync-freq=1 --num-threads=16 --test=fileio --file-total-size=1G --file-test-mode=rndrw --file-rw-ratio=2 run | |
| # when you are done testing | |
| rm -fr ~/tmp |
File operations:
reads/s: 277.34
writes/s: 138.67
fsyncs/s: 17741.10
Throughput:
read, MiB/s: 4.33
written, MiB/s: 2.17
General statistics:
total time: 10.0035s
total number of events: 181740
Latency (ms):
min: 0.01
avg: 0.88
max: 10.60
95th percentile: 2.26
sum: 159856.77
Threads fairness:
events (avg/stddev): 11358.7500/48.69
execution time (avg/stddev): 9.9910/0.00
MBP 13, late 2018 (spec'd out):
File operations:
reads/s: 16826.86
writes/s: 8413.38
fsyncs/s: 1077109.79
Throughput:
read, MiB/s: 262.92
written, MiB/s: 131.46
General statistics:
total time: 10.0018s
total number of events: 11025014
Latency (ms):
min: 0.00
avg: 0.01
max: 80.94
95th percentile: 0.03
sum: 102877.51
Threads fairness:
events (avg/stddev): 689063.3750/6034.77
execution time (avg/stddev): 6.4298/0.05
File operations:
reads/s: 913.15
writes/s: 456.33
fsyncs/s: 58611.58
Throughput:
read, MiB/s: 14.27
written, MiB/s: 7.13
General statistics:
total time: 10.0131s
total number of events: 598647
Latency (ms):
min: 0.00
avg: 0.14
max: 28.38
95th percentile: 0.19
sum: 81125.41
Threads fairness:
events (avg/stddev): 37415.4375/54.61
execution time (avg/stddev): 5.0703/0.04
Results on Manjaro KDE
File operations:
reads/s: 17742.46
writes/s: 8871.23
fsyncs/s: 1135711.07
Throughput:
read, MiB/s: 277.23
written, MiB/s: 138.61
General statistics:
total time: 10.0009s
total number of events: 11624695
Latency (ms):
min: 0.00
avg: 0.01
max: 5.10
95th percentile: 0.03
sum: 84717.56
Threads fairness:
events (avg/stddev): 726543.4375/1830.40
execution time (avg/stddev): 5.2948/0.01
sysbench 1.0.17
Manjaro KDE
File operations:
reads/s: 25052.25
writes/s: 12526.18
fsyncs/s: 1603543.75
Throughput:
read, MiB/s: 391.44
written, MiB/s: 195.72
General statistics:
total time: 10.0015s
total number of events: 16414447
Latency (ms):
min: 0.00
avg: 0.01
max: 31.49
95th percentile: 0.00
sum: 89075.17
Threads fairness:
events (avg/stddev): 1025902.9375/7516.36
execution time (avg/stddev): 5.5672/0.06
Current setup
File operations:
reads/s: 1200.92
writes/s: 600.46
fsyncs/s: 77052.73
Throughput:
read, MiB/s: 18.76
written, MiB/s: 9.38
General statistics:
total time: 10.0119s
total number of events: 787859
Latency (ms):
min: 0.00
avg: 0.20
max: 17.89
95th percentile: 0.05
sum: 156864.48
Threads fairness:
events (avg/stddev): 49241.1875/1430.80
execution time (avg/stddev): 9.8040/0.01
Desktop on /tmp (Manjaro XFCE)
File operations:
reads/s: 31486.92
writes/s: 15742.96
fsyncs/s: 2015299.46
Throughput:
read, MiB/s: 491.98
written, MiB/s: 245.98
General statistics:
total time: 10.0005s
total number of events: 20625656
Latency (ms):
min: 0.00
avg: 0.00
max: 10.70
95th percentile: 0.01
sum: 80034.78
Threads fairness:
events (avg/stddev): 1289103.5000/5151.70
execution time (avg/stddev): 5.0022/0.01
Desktop on /home (Manjaro XFCE)
File operations:
reads/s: 264.97
writes/s: 132.53
fsyncs/s: 17164.25
Throughput:
read, MiB/s: 4.14
written, MiB/s: 2.07
General statistics:
total time: 10.0722s
total number of events: 174849
Latency (ms):
min: 0.00
avg: 0.91
max: 12.44
95th percentile: 2.43
sum: 159964.31
Threads fairness:
events (avg/stddev): 10928.0625/1133.66
execution time (avg/stddev): 9.9978/0.00
Ok the mysterie of /tmp is solved - https://wiki.manjaro.org/index.php?title=Fstab#tmpfs
mount -l | grep /tmp
tmpfs on /tmp type tmpfs (rw,noatime)
Means that doing a sysbench in /tmp is basically doing a memory i/o test, instead of doing a disk i/o test - that is why the values are so good.
That is also what finally made the differences in "performance" when we tested the different distos like ubuntu and so on, so of them do not use tmpfs for /tmp out of the box, resulting in "bad performance"
apt-get install sysbenchif needed