Redis Server and Memtier Benchmark

[Anil Maurya]

Hi,

I am running memtier benchmark for redis.

I am using redis version (3.2.8) and memtier version 1.2.8 & 1.2.7.

I am using loopback configuration for the benchmark and below command for memtier  benchmark

/memtier_benchmark -s localhost -p 6379   -d 1024 --pipeline=1 --threads=1 -c 10  --key-pattern=S:S --ratio=1:1 -n 10000 --out-file ./redis-memtier

I am getting this output for the memtier 1.2.7

Type        Ops/sec     Hits/sec   Misses/sec      Latency       KB/sec

------------------------------------------------------------------------

Sets        7159.69          ---          ---    195.24700    916769.64

Gets        7155.43      7155.43         0.00    195.33000    916188.53

Totals     14315.12      7155.43         0.00    195.28900   1832958.17

Where I memtier 1.2.8.. Hits/Sec is coming 0

========================================================================

Type        Ops/sec     Hits/sec   Misses/sec      Latency       KB/sec

------------------------------------------------------------------------

Sets        1470.77          ---          ---      6.57500   3012208.17

Gets        1470.74         0.00      1470.74      0.21600        47.22

Totals      2941.51         0.00      1470.74      3.39500   3012255.39

This is seen for all the runs. Any idea why memtier 1.2.8 is reporting Hit/Sec 0.

Any quick response is appreciated.  

Thanks,

Anil Maurya

 

[Itamar Haber]

Hello Anil,

I reproduced the issue locally - there is indeed a regression here. It appears there is a similar issue in the repo - https://github.com/RedisLabs/memtier_benchmark/issues/8. Thanks for bumping this, I'll see if it can be fixed.

Cheers,

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[Itamar Haber]

Sorry, I jumped the gun too early. Can't reproduce locally with 1.2.8 or the latest master. If this issue persists, please follow up in the project's repository.

Cheers,

[Anil Maurya]

Hi,

I had tried to used even latest memtier version. i.e. 1.2.10.

1. first problem.. after installing memtier if I check version, it is still showing 1.2.8 instead of 1.2.10

~/opt/redis/memtier/memtier_benchmark-1.2.10$ ./memtier_benchmark --version

memtier_benchmark 1.2.8

Copyright (C) 2011-2017 Redis Labs Ltd.

This is free software.  You may redistribute copies of it under the terms of

the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.

There is NO WARRANTY, to the extent permitted by law.

:~/opt/redis/memtier/memtier_benchmark-1.2.10$ 

2. I ignored the version number. But I am still facing the same issue with the latest version of memtier.

Please provide the quick fix.

Thanks,

Anil Maurya

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[Anil Maurya]

Type        Ops/sec            Hits/sec   Misses/sec  Latency     KB/sec

----------------------------------------------------------------------------------------------

Sets        1470.77              ---              ---              6.57500   3012208.17

Gets        1470.74             0.00          1470.74      0.21600    47.22

Totals      2941.51         0.00        1470.74   3.39500  3012255.39

Here you see Hit/Sec is coming 0 instead of 1470.74.  Is this some reporting issue or some problem with set and get????

Anil

[Anil Maurya]

I am flushing redis ( using redis-cli flushall ) before starting memtier runs.