nsq perf tests producer with disk queue on SSD

# nsqd --lookupd-tcp-address=127.0.0.1:4160 -sync-every=100 -sync-timeout=1s -mem-queue-size=0

dieter@dieter-m6800 integration-test go run main.go
single message len 164
Publish 1 items per message 10000 calls
2015/08/10 15:38:50 INF    1 (:4150) connecting to nsqd
>       7631 msg/s       7631 metrics/s
>       7395 msg/s       7395 metrics/s
>       7269 msg/s       7269 metrics/s
>       7058 msg/s       7058 metrics/s
MultiPublish 1 items per message 10000 messages per call
>      14074 msg/s      14074 metrics/s
>      12846 msg/s      12846 metrics/s
>      13625 msg/s      13625 metrics/s
>      13831 msg/s      13831 metrics/s
Publish 399 items per message 2000 calls
>       2062 msg/s     822731 metrics/s
>       2050 msg/s     818050 metrics/s
>       1967 msg/s     784653 metrics/s
>       2006 msg/s     800447 metrics/s
MultiPublish 399 items per message 80 messages per call
>       2767 msg/s    1104086 metrics/s
>       2370 msg/s     945794 metrics/s
>       9957 msg/s    3972920 metrics/s
>       2396 msg/s     955893 metrics/s
MultiPublish 3 items per message 10000 messages per call
>      13517 msg/s      40552 metrics/s
>      13829 msg/s      41487 metrics/s
>      13306 msg/s      39919 metrics/s
>      13702 msg/s      41107 metrics/s

# nsqd --lookupd-tcp-address=127.0.0.1:4160 -sync-every=10 -sync-timeout=1s -mem-queue-size=0

dieter@dieter-m6800 integration-test go run main.go
single message len 164
Publish 1 items per message 10000 calls
2015/08/10 15:39:48 INF    1 (:4150) connecting to nsqd
>        688 msg/s        688 metrics/s
>        656 msg/s        656 metrics/s
>        686 msg/s        686 metrics/s
>        690 msg/s        690 metrics/s
MultiPublish 1 items per message 10000 messages per call
>       1307 msg/s       1307 metrics/s
>       1314 msg/s       1314 metrics/s
>       1298 msg/s       1298 metrics/s
>       1302 msg/s       1302 metrics/s
Publish 399 items per message 2000 calls
>        534 msg/s     213170 metrics/s
>        502 msg/s     200119 metrics/s
>        424 msg/s     169132 metrics/s
>        400 msg/s     159419 metrics/s
MultiPublish 399 items per message 80 messages per call
>        752 msg/s     300206 metrics/s
>        509 msg/s     203030 metrics/s
>        570 msg/s     227395 metrics/s
>        637 msg/s     254351 metrics/s
MultiPublish 3 items per message 10000 messages per call
>       1300 msg/s       3901 metrics/s
>       1273 msg/s       3818 metrics/s
>       1267 msg/s       3801 metrics/s
>       1302 msg/s       3906 metrics/s

# nsqd --lookupd-tcp-address=127.0.0.1:4160 -sync-every=1 -sync-timeout=1s -mem-queue-size=0

dieter@dieter-m6800 integration-test go run main.go
single message len 164
Publish 1 items per message 10000 calls
2015/08/10 15:44:02 INF    1 (:4150) connecting to nsqd
>         98 msg/s         98 metrics/s
>        110 msg/s        110 metrics/s
>        114 msg/s        114 metrics/s
>        114 msg/s        114 metrics/s
MultiPublish 1 items per message 10000 messages per call
>        116 msg/s        116 metrics/s
>        117 msg/s        117 metrics/s
>        117 msg/s        117 metrics/s
>        117 msg/s        117 metrics/s
Publish 399 items per message 2000 calls
>        104 msg/s      41655 metrics/s
>        104 msg/s      41620 metrics/s
>        104 msg/s      41548 metrics/s
>        103 msg/s      41217 metrics/s
MultiPublish 399 items per message 80 messages per call
>         95 msg/s      38074 metrics/s
>        101 msg/s      40166 metrics/s
>         95 msg/s      37770 metrics/s
>        105 msg/s      41833 metrics/s
MultiPublish 3 items per message 10000 messages per call
>        114 msg/s        343 metrics/s
>        116 msg/s        347 metrics/s
>        114 msg/s        342 metrics/s
>        116 msg/s        347 metrics/s