Getting ready for 4.0; Time-to-first-byte measurements

Lasse Karstensen lkarsten at
Mon Sep 23 16:38:38 CEST 2013

On Mon, Sep 23, 2013 at 04:24:07PM +0200, Lasse Karstensen wrote:
> I've been running some benchmarks to see how master stands up to the earlier
> version.
> One of the metrics are time-to-first-byte, which I've got (preliminary)
> results for now.

I should also mention that I'm running this on 4 year old hardware, so
the numbers are primarily useful for comparing new vs old.

fryer1 hw: Intel(R) Xeon(R) CPU           E5504  @ 2.00GHz
kernel: 3.2.0-51-generic

On my 2 year old X220 Thinkpad the numbers for Varnish 3.0 are much better:
(Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz) with debian wheezy: (3.2.0-4-amd64))

localhost:6081 (2013-09-23 14:35:16.566675 on immer)

mean: 93.045μs (stdev 0.000001108) median: 92.959μs
mean: 136.669μs (stdev 0.000039922) median: 147.365μs
mean: 145.904μs (stdev 0.000005585) median: 144.362μs
mean: 135.787μs (stdev 0.000012227) median: 136.225μs
mean: 137.303μs (stdev 0.000008220) median: 138.007μs

With regards,
Lasse Karstensen
Varnish Software AS

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