IBM Support

MF61863 - OSP-COMM-ELAN-PERFM DEVICE DRIVER NOT RECEIVING INTERRUPTS

PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

OSP-COMM-ELAN-PERFM DEVICE DRIVER NOT RECEIVING INTERRUPTS


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
NONE



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

This PTF is subject to the terms of the 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.

SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.





APAR Error Description / Circumvention

-----------------------------------------------
There is a problem with Ethernet device drivers not receiving
packets in a timely manner.  The customer was seeing a delay of
approximately .065 of a second for a response with a sniffer
network trace with a ping test.  This behavior can be observed
with adapters with CCINs 2B93, 2C4C, 2C4D, 2CC0, 2CC1, 2CE3, or
2CE4.  Varying the line description off and on corrected the
performance issue.

CORRECTION FOR APAR MA45524 :
-----------------------------
The symptoms seen by the customer are due to the device driver
not receiving interrupts.  This is caused by a multi-threading
issue which is seen if multiple CMN resources on a device are
being activated simultaneously.  This is more likely to happen
if the CMN resources have line descriptions with ONLINE(*YES)
specified or if those line descriptions are associated with
interfaces with AUTOSTART(*YES).

This PTF will fix the multi-threading problem with interrupt
setup and the device driver performance issue should be
corrected.

CIRCUMVENTION FOR APAR MA45524 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


None.


Default Instructions

THIS IS A DELAYED PTF TO BE APPLIED AT IPL TIME.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF59390      LIC-OTHER-INCORROUT DUAL ADAPTERS 57CB AND 2B4C INTERMITTENT

Summary Information

System.............................. i
Models..............................
Release............................. V7R2M0
Licensed Program............... 5770999
APAR Fixed.......................... View details for APAR MA45524
Superseded by:...................... View fix details for PTF MF99109
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C6306720


System i Support

IBM disclaims all warranties, whether express or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. By furnishing this document, IBM grants no licenses to any related patents or copyrights. Copyright © 1996,1997,1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 IBM Corporation. Any trademarks and product or brand names referenced in this document are the property of their respective owners. Consult the Terms of use link for trademark information.

Document information

More support for: i family

Software version: V7R2M0

Operating system(s): OS/400

Reference #: MF61863

Modified date: 19 April 2016