Matthew J. Roth wrote: > Recently, we were pushing our server to almost full CPU utilization. > Since we've observed that Asterisk is CPU bound, we upgraded our > server from a PowerEdge 6850 with four single-core Intel Xeon CPUs > running at 3.16GHz, to a PowerEdge 6850 with 4 dual-core Intel Xeon > CPUs running at 3.00GHz. The software installed is identical and a > kernel build benchmark yielded promising results. The new dual-core > server ran roughly 80% faster, which is about what we expected. > > As far as Asterisk is concerned, at low call volumes the dual-core > server outperforms the single-core server at a similar rate. Outperforms in what sense? > I'm working on a follow-up post that will demonstrate this with some > benchmarks for a small number of calls in various scenarios on each > machine. However, to our surprise as the number of concurrent calls > increases, the performance gains begin to flatten out. In fact, it > seems that somewhere between 200 and 300 calls, the two servers start > to exhibit similar idle times despite one of them having twice as many > cores. What do you mean by "idle" here?
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