[prev in list] [next in list] [prev in thread] [next in thread]
List: opensolaris-networking-discuss
Subject: [networking-discuss] SCTP dropping messages on T5240 ??
From: "William Reich" <reich () ulticom ! com>
Date: 2008-12-09 14:05:53
Message-ID: A51D8ACD861B7E41BFC7FE5C64BE96480A673428 () MTLEXVS01 ! ulticom ! com
[Download RAW message or body]
--===============0322655320==
Content-class: urn:content-classes:message
Content-Type: multipart/alternative;
boundary="----_=_NextPart_001_01C95A07.414E9CE1"
This is a multi-part message in MIME format.
I have a pair of T5240 machines with one
general purpose ( not private ) network between them.
I am running sctp traffic over this network between the two machines.
In one time period, I have a burst of 24 messages
roughly 3900 bytes in size going from one machine to the other.
The messages contain a sequence number.
The messages do not all arrive at the destination properly.
Randomly, a couple of messages will be dropped.
"Dropped" is defined as my application never sees them.
Where did the messages get lost ?
ip?
sctp ?
my application ?
I know this test runs on other older platforms.
I have not sniffed the line yet.
Given that background, my question is:
What does this setting in /etc/system really do ??
set ip:ip_soft_rings_cnt=16
I found this setting here...
http://www.solarisinternals.com/wiki/index.php?title=Networks&printable=
yes#Tunable_for_general_workloads_on_T5140.2FT5240
W. Reich
[Attachment #3 (text/html)]
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.6000.16544" name=GENERATOR></HEAD>
<BODY>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>I have a pair of T5240
machines with one </SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>general purpose ( not
private ) network between them.</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>I am running sctp traffic
over this network between the two machines.</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>In one time period, I have
a burst of 24 messages</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>roughly 3900 bytes in
size going from one machine to the other.</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>The messages contain a
sequence number.</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>The messages do not all
arrive at the destination properly.</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>Randomly, a couple of
messages will be dropped.</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>"Dropped" is defined as my
application never sees them.</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>Where did the messages get
lost ?</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>ip?</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>sctp ?</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>my application
?</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>I know this test runs on
other older platforms.</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>I have not sniffed the line
yet.</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>Given that background, my
question is:</SPAN></FONT></DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial><SPAN class=061444313-09122008>What does this setting in
/etc/system really do ??</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=4><SPAN class=061444313-09122008><PRE>set \
ip:ip_soft_rings_cnt=16</PRE><PRE> <FONT face=Arial>I found this setting \
here...</FONT></PRE><A \
href="http://www.solarisinternals.com/wiki/index.php?title=Networks&printable=yes# \
Tunable_for_general_workloads_on_T5140.2FT5240">http://www.solarisinternals.com/wiki/i \
ndex.php?title=Networks&printable=yes#Tunable_for_general_workloads_on_T5140.2FT5240</A><PRE><FONT \
face=Arial></FONT> </PRE></SPAN></FONT></DIV> <DIV><SPAN style="FONT-SIZE: \
13.5pt; FONT-FAMILY: Elephant"><FONT face="Cooper Black">W. \
Reich</FONT></SPAN></DIV> <P></P>
<DIV> </DIV></BODY></HTML>
_______________________________________________
networking-discuss mailing list
networking-discuss@opensolaris.org
--===============0322655320==--
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic