[erlang-questions] Re: Unicast 40k messages, $1000 bounty (Hot Wheels!)

[Feng Yu]

hi all,
    I achieve the goal with my patched otp R13B02-1.
Server:
#taskset -c 1 /usr/src/xxx/bin/erl -pa ebin mochiweb/ebin -boot start_sasl
+A 8 +K true +P 1200000   -hotwheels cluster  -hotwheels listen_port 8081
-name hotwheels@`hostname`s hotwheels start
publish,info: [{memory,757453},
               {owner,<0.84.0>},
               {heir,none},
               {name,subs},
               {size,50000},
               {node,'hotwheels@REDACTED'},
               {named_table,false},
               {type,set},
               {keypos,1},
               {protection,protected}]
cost time: 871.379

Client:
#taskset -c 0 /usr/src/xxx/bin/erl -boot start_sasl -pa ebin mochiweb/ebin
+A 8 +K true +P 1200000   -hotwheels cluster  -hotwheels listen_port 8081
-name debug
(debug@REDACTED)8>  bot:test(flashbot,50000).
setup connection...
setup done

=INFO REPORT==== 4-Nov-2009::17:41:32 ===
setup: 5843.08ms, good: 50000, bad: 0, total run: 8593.22ms
    0.0510ms | min
  500.0000ms | 15943  -  31.89%
 1000.0000ms | 16949  -  33.90%
 1500.0000ms | 17108  -  34.22%
 1349.0090ms | max
ok

My machine hardware:

root@REDACTED:/proc/sys/net/ipv4# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Pentium(R) Dual-Core  CPU      E5200  @ 2.50GHz
stepping        : 6
cpu MHz         : 1200.000
cache size      : 2048 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc
arch_perfmon pebs bts pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm
lahf_lm
bogomips        : 4986.70
clflush size    : 64
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Pentium(R) Dual-Core  CPU      E5200  @ 2.50GHz
stepping        : 6
cpu MHz         : 1200.000
cache size      : 2048 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
apicid          : 1
initial apicid  : 1
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc
arch_perfmon pebs bts pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm
lahf_lm
bogomips        : 4987.44
clflush size    : 64
power management:

Os:
# uname -a
Linux nd-desktop 2.6.31-14-generic #3 SMP Sun Nov 1 23:03:10 CST 2009 i686
GNU/Linux

专注 高性能容错分布式服务器的研究和实现
http://blog.yufeng.info



On Sat, Jul 18, 2009 at 2:14 PM, Joel Reymont <joelr1@REDACTED> wrote:

> Folks,
>
> Janus has been renamed to Hot Wheels and now lives at
> http://github.com/wagerlabs/hotwheels/tree/master.
>
> The goal is still to get a broadcast to 40k users in < 1s.
>
> I'm making several protocol changes, e.g. {packet, 2}
> and moving away from JSON to a simple protocol where
> every packet has a 12 byte timestamp to measure latency,
> 1 byte for message type (1 = subscribe, 2 = unsubscribe),
> and size + body for topic, event, etc.
>
>        Thanks, Joel
>
> ---
> Mac hacker with a performance bent
> http://www.linkedin.com/in/joelreymont
>
>
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