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tacho's Issues

Can we work together

github.com/posix4e/rust-metrics <- I am currently working on getting this integrated into tokio itself. Anyway we can join forces @durch should be able to help develope as well.

Trimming down time to process work items

In an attempt to fix linkerd/linkerd-tcp#35 I'm benchmarking master vs ver/synchro-system (using time cargo run --release --example multithread | tee output.txt and want to share some numbers.

ver/synchro-system output (this is the last report from the metrics reporter)

metrics_count 5
loop_iters_count{role="worker"} 1000000000
loop_iters_curr{role="worker"} 999999999
total_time_ms{role="worker"} 654672
heartbeats{role="heartbeat"} 653
loop_time_us{stat="count", role="worker"} 1086186
loop_time_us{stat="mean", role="worker"} 0.0055248364460598835
loop_time_us{stat="min", role="worker"} 0
loop_time_us{stat="max", role="worker"} 414
loop_time_us{stat="stddev", role="worker"} 0.42562936784848004
loop_time_us{stat="p50", role="worker"} 0
loop_time_us{stat="p90", role="worker"} 0
loop_time_us{stat="p95", role="worker"} 0
loop_time_us{stat="p99", role="worker"} 0
loop_time_us{stat="p999", role="worker"} 0
loop_time_us{stat="p9999", role="worker"} 0

real	10m54.844s
user	8m5.564s
sys	2m49.460s

master output. (note our last report doesn't show the last batch of items being processed)

metrics_count 4
loop_iters_count{role="worker"} 999826348
loop_iters_curr{role="worker"} 999826347
heartbeats{role="heartbeat"} 5377
loop_time_us{stat="count", role="worker"} 374274
loop_time_us{stat="mean", role="worker"} 1.7634861091072316
loop_time_us{stat="min", role="worker"} 0
loop_time_us{stat="max", role="worker"} 137
loop_time_us{stat="stddev", role="worker"} 2.118960934392008
loop_time_us{stat="p50", role="worker"} 0
loop_time_us{stat="p90", role="worker"} 0
loop_time_us{stat="p95", role="worker"} 0
loop_time_us{stat="p99", role="worker"} 0
loop_time_us{stat="p999", role="worker"} 0
loop_time_us{stat="p9999", role="worker"} 0

real	89m39.084s
user	102m42.164s
sys	63m15.424s

The example in master is 9x slower than the version in very/synchro-system. I'll build some flame graphs so compare the two.

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