On Wed, Jul 29, 2020 at 3:11 PM Poul-Henning Kamp <p...@phk.freebsd.dk> wrote:
> -------- > Martin Grigorov writes: > > > > > Any feedback and ideas how to tweak it (VCL or even patches) are very > > > > welcome! > > > > > > First you need to tweak your benchmark setup. > > > > > > aarch64 > > > > > > Thread Stats Avg Stdev Max +/- Stdev > > > Latency 655.40us 798.70us 28.43ms 90.52% > > > > > > Strictly speaking, you cannot rule out that the ARM machine > > > sends responses before it receives the request, because your > > > standard deviation is larger than your average. > > > > > > > Could you explain in what case(s) the server would send responses before > > receiving a request ? > > It never would, that's the point! > > Your measurement says that there is 2/3 chance that the latency > is between: > > 655.40µs - 798.70µs = -143.30µs > > and > 655.40µs + 798.70µs = 1454.10µs > > You cannot conclude _anything_ from those numbers. > This now sounds like: if the latency stats are not correct then most probably the throughput is also not correct! I may switch to a different load client tool! > > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > p...@freebsd.org | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. >
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