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<font size="-1"><font face="Helvetica, Arial, sans-serif">I (and
others) got around this problem by launching multiple syslog-ng
processes and having a master process do very basic filtering and
routing to the child processes.<br>
I think I remember hearing that syslog-ng 3.2 was going to use threads
(at least for destination drivers) but dont quote me on that.<br>
<br>
-Patrick<br>
</font></font><br>
Sent: Wed Dec 01 2010 14:57:28 GMT-0700 (Mountain Standard Time)<br>
From: Mukarram Syed <a class="moz-txt-link-rfc2396E" href="mailto:msyed@walmart.com"><msyed@walmart.com></a><br>
To: '<a class="moz-txt-link-abbreviated" href="mailto:syslog-ng@lists.balabit.hu">syslog-ng@lists.balabit.hu</a>' <a class="moz-txt-link-rfc2396E" href="mailto:syslog-ng@lists.balabit.hu"><syslog-ng@lists.balabit.hu></a> <br>
Subject: [syslog-ng] syslog-ng stuck on one CPU but need to share it
with multiple CPUs.
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<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);">I
have syslog-ng version syslog-ng-2.1.4-1.el5 running on RHEL5.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);">When
I run the top, syslog-ng process runs on only one CPU, but
this is a 24 Core server.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);">How
do I make syslog-ng share the load across several CPUs or
cores rather than have it stuck in one CPU?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);">Any
suggestions are appreciated.<o:p></o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="color: rgb(31, 73, 125);">TOP
output for syslog-ng:<o:p></o:p></span></b></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">
PID USER PR NI
VIRT RES SHR S %CPU %MEM TIME+
COMMAND
<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">11304
root 18 0 2023m
1.9g 1252 R 95.7 2.7 22658:29 syslog-ng <o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="color: rgb(31, 73, 125);">MPSTAT
output:<o:p></o:p></span></b></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:53
PM CPU %user
%nice %sys %iowait %irq
%soft %steal %idle intr/s<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM all 6.37
0.00 1.38 0.00
0.00 0.17 0.00
92.08 5073.74<o:p></o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 0
90.91 0.00 4.04
0.00 1.01 3.03 0.00
1.01 4942.42 – </span></b><b><span
style="font-size: 9pt; font-family: "Courier New"; color: rgb(31, 73, 125);">my
guess is
this is using syslog-ng<o:p></o:p></span></b></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 1
0.00 0.00 1.00
0.00 0.00 0.00
0.00 99.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 2
14.00 0.00 3.00
0.00 0.00 0.00
0.00 83.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 3
0.00 0.00 1.00
0.00 0.00 0.00
0.00 99.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 4
0.00 0.00 0.00
0.00 0.00 0.00 0.00
100.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 5
12.00 0.00 6.00
0.00 0.00 0.00
0.00 82.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 6
11.11 0.00 4.04
0.00 0.00 0.00
0.00 84.85 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 7
0.00 0.00 1.01
0.00 0.00 0.00
0.00 98.99 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 8
0.00 0.00 1.00
0.00 0.00 0.00
0.00 99.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 9 11.11
0.00 2.02 0.00
0.00 0.00 0.00
86.87 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 10
1.00 0.00 6.00
1.00 0.00 1.00
0.00 91.00 122.22<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 11
0.00 0.00 1.01
0.00 0.00 0.00
0.00 98.99 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 12
0.00 0.00 0.00
0.00 0.00 0.00 0.00
100.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 13
0.00 0.00 0.00
0.00 0.00 0.00 0.00
100.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 14
0.00 0.00 0.00
0.00 0.00 0.00 0.00
100.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 15
0.00 0.00 1.01
0.00 0.00 0.00
0.00 98.99 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 16
0.00 0.00 0.00
0.00 0.00 0.00 0.00
100.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 17
0.00 0.00 0.00
0.00 0.00 0.00 0.00
100.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 18
0.00 0.00 0.00
0.00 0.00 0.00 0.00
100.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 19 10.20
0.00 1.02 0.00
0.00 0.00 0.00
88.78 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 20
0.00 0.00 0.00 0.00
0.00 0.00 0.00
100.00 5.05<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 21
0.00 0.00 0.00
0.00 0.00 0.00 0.00
100.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 22
0.00 0.00 0.00
0.00 0.00 0.00 0.00
100.00 0.00<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Courier New"; color: rgb(31, 73, 125);">01:16:54
PM 23
0.00 0.00 0.00
0.00 0.00 0.00 0.00
100.00 5.05<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);">#
mukarram<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);">Mukarram
Syed</span></b><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: rgb(31, 73, 125);"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"><o:p> </o:p></span></p>
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