Ron,
TX errors on a Hipersocket are business as usual. When the receiver fails
to pick up packets at the same rate that the transmitter transmits, the
queues will run full over time. TCP uses packet loss as a measure to
tune the TCP window size, which effectively will reduce the transmit rate.
Thus, the packet loss you see only indicates that trimming down transmits
to match the receiver's performance is taking place.
with kind regards
Carsten Otte
System z firmware development / Boeblingen lab
---
Every revolution was first a thought in one man's mind;
and when the same thought occurs to another man, it is the key to that era.
- Ralph Waldo Emerson, Essays: First Series, 1841
Ron Foster
<Ron.Foster@baldo
r.abb.com> To
Sent by: Linux on LINUX-390@vm.marist.edu,
390 Port cc
<linux-...@vm.mar
ist.edu> Subject
TX-Errs on hipersocket interface.
24.07.2013 22:13
Please respond to
Linux on 390 Port
<linux-...@vm.mar
ist.edu>
Hello,
While investigating another problem, I did a netstat -I on our production
SAP Linux App Servers.
To my surprise, I am getting TX-ERRS on a hipersocket interface on two of
our systems. The two systems have recently been converted to SLES11 SP2.
The hipersocket device is connected to a z/OS system where our DB2 system
lives.
The hipersocket device is also used by other SAP APP servers that are
SLES10 SP4. Those servers have zeros in the TX-ERRS column.
Any ideas on how to trouble shoot Transmit errors on a hipersocket?
Ron Foster
Baldor Electric Company
5711 R S Boreham Jr Street
Fort Smith, AR 72901
Phone:479-648-5865
Fax:479-646-5440
Email: ron.fos...@baldor.abb.com<mailto:ron.fos...@baldor.abb.com>
IM Address:rfos...@baldor.com
www.baldor.com<http://www.baldor.com/>
----------------------------------------------------------------------
For LINUX-390 subscribe / signoff / archive access instructions,
send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or
visit
http://www.marist.edu/htbin/wlvindex?LINUX-390
----------------------------------------------------------------------
For more information on Linux on System z, visit
http://wiki.linuxvm.org/
----------------------------------------------------------------------
For LINUX-390 subscribe / signoff / archive access instructions,
send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit
http://www.marist.edu/htbin/wlvindex?LINUX-390
----------------------------------------------------------------------
For more information on Linux on System z, visit
http://wiki.linuxvm.org/
