fphttp slower with threads
lazarus / 38-Networking and Web Programming

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Trenatos · 2018-02-28 15:14

I'm playing with fphttp to create an API and comparing it to my usual
stack of OpenBD (CFML engine running on the JVM), I also have a simple
Java Spring API to compare with.

I'm comparing them locally with WRK2 using Code: Pascal
 [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i wrk2 -t2
-c100 -d30s -R2000 --latency http://localhost:7080/status/
In the process I've done both x86 and x64 with and without threads and
had some odd results.

Both architectures have about 13% less throughput when setting
multithreading to true, and the x64 is a tad slower than the x86
version, but only by a little.

Compared to my usual stack both have about 26% less throughput.

I'm surprised that they're slower than the Java versions at all,
that's a big disappointment as I was hoping for better performance
with a native binary solution compared to Java, and I'm surprised that
threading caused a drop in throughput.

I ran each test a good handful of times and the average I got was:
OpenBD - 1995 requests/sec
Java Spring API - 1997 requests/sec

FPC fphttp
No threading
x86 - 1560 requests/sec
x64 - 1450 requests/sec

FPC fphttp
With threading
x86 - 1480 requests/sec
x64 - 1370 requests/sec

Tested on my Macbook Pro.

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marcov · 2018-02-28 15:32

What does the Mac Brook  pro run?   Afaik OS X has several threading
APIs,  (POSIX and native?), maybe it is merely a result of which API
you pick.

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Trenatos · 2018-02-28 15:58

It's running OSX El Capitan

System report:

Model Name: MacBook Pro
Model Identifier: MacBookPro11,5
Processor Name: Intel Core i7
Processor Speed: 2.5 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 16 GB

I'm using these options in my fpc app
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i {$ifdef
darwin}cthreads,cmem,{$endif}

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Leledumbo · 2018-03-01 17:51

It actually also happens on Linux, using cthreads, with both tested
and tester programs running on the same machine. I have yet to compare
using server to server setup, to avoid any intra resource sharing
problem, but I suppose fpc would shine in such a setup.

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Trenatos · 2018-03-01 18:22

I might give it a go under more proper server settings (Separate
server instance from test machine, local network to avoid latency
issues/spikes, etc.)

I'll come back with results of my tests when I get a setup going.