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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>What exactly is Garbage collecting? I don’t
get those in my logs.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Alex<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
syslog-ng-bounces@lists.balabit.hu [mailto:syslog-ng-bounces@lists.balabit.hu] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Cary, Kim<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, March 14, 2006
12:30 PM<br>
<b><span style='font-weight:bold'>To:</span></b> syslog-ng@lists.balabit.hu<br>
<b><span style='font-weight:bold'>Subject:</span></b> [syslog-ng] solaris UDP
loss</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Finally got around to reading the docs and applying the
recommendations.<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>FIRST - thanks much!<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>NOW - my results:<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'># ndd /dev/udp udp_recv_hiwat<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>65536<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'># ndd /dev/udp udp_max_buf<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>1073741824<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'># date ; netstat -s | grep udpInOverflows<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Tue Mar 14 10:15:16<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> udpInCksumErrs =
0 udpInOverflows =677996405<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'># date ; netstat -s | grep udpInOverflows<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Tue Mar 14 10:15:19<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> udpInCksumErrs =
0 udpInOverflows =677996571<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'># date ; netstat -s | grep udpInOverflows<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Tue Mar 14 10:15:22<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> udpInCksumErrs =
0 udpInOverflows =677996726<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I'm pretty sure this is just the Firewall sending more than 55M lines
of connection/deny logs over UDP.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>IF I was to switch the FW over to TCP logging from UDP, would this be a
better solution?<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>BTW, here are a few words from syslog-ng:<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mar 14 09:32:32 syslog-ng[20685]: STATS: dropped 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mar 14 09:42:32 syslog-ng[20685]: STATS: dropped 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mar 14 09:52:32 syslog-ng[20685]: STATS: dropped 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mar 14 10:02:32 syslog-ng[20685]: STATS: dropped 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mar 14 10:04:53 syslog-ng[20685]: Garbage collecting while busy...<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mar 14 10:04:58 syslog-ng[20685]: Objects alive: 310, garbage
collected: 2999695<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mar 14 10:12:32 syslog-ng[20685]: STATS: dropped 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mar 14 10:16:22 syslog-ng[20685]: Garbage collecting while idle...<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mar 14 10:16:24 syslog-ng[20685]: Objects alive: 318, garbage
collected: 1129970<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Mar 14 10:22:32 syslog-ng[20685]: STATS: dropped 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>and its config:<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>source s_udp_inetpix { <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>
udp(ip(192.168.0.1)); <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> };<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Mar 7, 2006, at 3:01 PM, <a
href="mailto:syslog-ng-request@lists.balabit.hu">syslog-ng-request@lists.balabit.hu</a>
wrote:<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
<br>
<o:p></o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>| 1) Am I reading that loss right??</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt;min-height: 14.0px'><font size=1
face=Monaco><span style='font-size:7.5pt;font-family:Monaco'><o:p> </o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>Probably, you might<span
class=apple-converted-space> </span>however want to snoop on the
interface to see what</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>kind of udp packets come on your
interface.</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt;min-height: 14.0px'><font size=1
face=Monaco><span style='font-size:7.5pt;font-family:Monaco'><o:p> </o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>| 2) Any tips from Solaris/syslog-ng
tuners would be appreciated!</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt;min-height: 14.0px'><font size=1
face=Monaco><span style='font-size:7.5pt;font-family:Monaco'><o:p> </o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>udp_max_buf does not set the queue
length of the udp socket, which by</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>the way can have a different value
for each socket...</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt;min-height: 14.0px'><font size=1
face=Monaco><span style='font-size:7.5pt;font-family:Monaco'><o:p> </o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>You could have a look at:</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'><a
href="http://sunsolve.sun.com/search/document.do?assetkey=1-30-3218-1">http://sunsolve.sun.com/search/document.do?assetkey=1-30-3218-1</a></span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt;min-height: 14.0px'><font size=1
face=Monaco><span style='font-size:7.5pt;font-family:Monaco'><o:p> </o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>basically: increasing udp_max_buf
without increasing udp_recv_hiwat has</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>no meaning. Furthermore, you can
increase you socket buffer that way up</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>to 64k (Solaris 8 & 9), if you
want to increase it</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>further up you must use the
setsockopt call (up to udp_max_buf which</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>has a maximum value of 1GB).<span
class=apple-converted-space> </span></span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>Here is the official SUN
documentation regarding this:</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'><a
href="http://docs.sun.com/app/docs/doc/817-0404/6mg74vsb5?a=view#gbtag">http://docs.sun.com/app/docs/doc/817-0404/6mg74vsb5?a=view#gbtag</a></span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt;min-height: 14.0px'><font size=1
face=Monaco><span style='font-size:7.5pt;font-family:Monaco'><o:p> </o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>Now regarding your packet loss
issue. I would increase</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>udp_recv_hiwat -> 65536</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>udp_max_buf -> 1073741824 (you
will never get here anyway)</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt;min-height: 14.0px'><font size=1
face=Monaco><span style='font-size:7.5pt;font-family:Monaco'><o:p> </o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>Then I would try to play with
syslog-ng config: log_fifo_size,</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>log_iw_size and log_fetch_limit.<span
class=apple-converted-space> </span>But here I'd appreciate</span></font><o:p></o:p></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=1 face=Monaco><span
style='font-size:7.5pt;font-family:Monaco'>a syslog-ng expert to step in and
tell us what to do more preceisely.</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
</div>
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