Gaussian Distribution --key-pattern=G:G Stall the Memcached on MacOS

[QingchenDang]

Hi, I encountered an issue when running memtier_benchmark on my MacOS. It shows the following results. It works well without specifying the key pattern to G:G, and the problem seems not exist in my Ubuntu server.

Could you help resolve the issue?

$ memtier_benchmark -p 11211 -P memcache_text --key-pattern=G:G

Writing results to stdout
[RUN #1] Preparing benchmark client...
[RUN #1] Launching threads now...
[RUN #1 0%, 0 secs] 4 threads: 0 ops, 0 (avg: 0[RUN #1 0%, 0 secs] 4 threads: 0 ops, 0 (avg: 0)
[RUN #1 0%, 0 secs] 4 threads: 0 ops, 0 (avg: 0[RUN #1 0%, 0 secs] 4 threads: 0 ops, 0 (avg: 0)
[RUN #1 0%, 0 secs] 4 threads: 0 ops, 0 (avg: 0[RUN #1 0%, 0 secs] 4 threads: 0 ops, 0 (avg: 0)

Thank you very much for helping.

[YaacovHazan]

@QingchenDang thank you for opening this issue, I prepared a PR (fix issue #158, gaussian key-pattern on MAC OS) that should fix it.

[filipecosta90]

Closing as per #159 fix