Moosefs comparison

absolutely absurdly faster performance compared to lizardfs.

Testgroup "current"
===   1 file series   ===
1 file, 1 thread, seq 1M writes, simple: 101 write iops (55% HDD)
1 file, 1 thread, rnd 16k writes, simple: 393 write iops (55% HDD)
1 file, 1 thread, rnd 16k writes, simple, take 2: 386 write iops (58% HDD)
1 file, 16 threads, rnd 4k writes, posixaio: 5422 write iops (1544% HDD)
1 file, 16 threads, rnd 8k writes, posixaio: 4401 write iops (1037% HDD)
1 file, 16 threads, rnd 16k writes, posixaio: 3239 write iops (724% HDD)
1 file, 16 threads, rnd 16k writes, posixaio, take 2: 3238 write iops (642% HDD)
===  16 file series   ===
16 files, 1 thread each, seq 1M writes, simple: 110 write iops (73% HDD)
16 files, 1 thread each, rnd 16k writes, simple: 5096 write iops (779% HDD)
16 files, 1 thread each, rnd 16k writes, simple, take 2: 5127 write iops (817% HDD)
16 files, 1 thread each, rnd 16k writes, posixaio: 5204 write iops (1116% HDD)
16 files, 16 threads each, rnd 16k writes, posixaio: 7020 write iops (1307% HDD)
16 files, 16 threads each, rnd 16k writes, posixaio, take 2: 7015 write iops (1400% HDD)
===   O_SYNC series   ===
1 file, 1 thread, rnd 16k writes, simple, o_sync: 372 write iops (240% HDD)
1 file, 16 threads, rnd 16k writes, posixaio, o_sync: 355 write iops (147% HDD)
16 files, 1 thread each, rnd 16k writes, simple, o_sync: 5183 write iops (1026% HDD)
16 files, 16 threads each, rnd 16k writes, posixaio, o_sync: 5199 write iops (1021% HDD)
===    read series    ===
1 file, 1 thread, seq 1M reads, simple: 1515 read iops (40% HDD)
1 file, 16 threads, rnd 16k reads, posixaio: 1292 read iops (755% HDD)
16 files, 1 thread each, seq 1M reads, simple: 10113 read iops (250% HDD)
16 files, 1 thread each, rnd 16k reads, posixaio: 393889 read iops (83806% HDD)
16 files, 16 threads each, rnd 16k reads, posixaio: 872489 read iops (175905% HDD)
=== native aio series ===
1 file, 16 threads, rnd 16k writes, native aio: 401 write iops (65% HDD)
16 files, 16 threads each, rnd 16k writes, native aio: 5115 write iops (1020% HDD)
1 file, 16 threads, rnd 16k reads, native aio: 1412 read iops (1077% HDD)
16 files, 16 threads each, rnd 16k reads, native aio: 900873 read iops (182362% HDD)
Tests complete on mwanafunzi @ 2020-10-01 12:04:34.
Files remain. To clean up, add argument "cleanup".