A fix is available
APAR status
Closed as program error.
Error description
When looking at the CHIN joblog together with the dump, there was an increase in CHIN CPU utilization due to a leak of rriAccept control blocks which occurs when rriAcceptSess gets a comms error trying to receive the initial flow from the client, as reported by message CSQX209E. * Additional keywords: Subpool 0 SP0 118 x'118' byte XSTB blocks IEAVESLL local lock IGVGPVT storage obtain getmain performance
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: High CPU seen in IEAVESLL and increased * * storage usage in channel initiator * * address space. * **************************************************************** * RECOMMENDATION: * **************************************************************** When a channel connects but fails during initial negotiation, an internal control block may not be freed at channel termination. If a large number of channels experience such a failure over the lifetime of the channel initiator address space then the unreleased storage blocks may begin to impact the time taken to obtain storage resulting in increased CPU costs and higher storage utilization.
Problem conclusion
Processing has been amended to ensure that the control block is always released following a failure during channel negotiation. 100Y CMQXRMSA
Temporary fix
********* * HIPER * *********
Comments
×**** PE15/08/06 FIX IN ERROR. SEE APAR PI46444 FOR DESCRIPTION
APAR Information
APAR number
PM96798
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2013-09-11
Closed date
2013-09-25
Last modified date
2015-12-24
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
IV49808 UK97900
Modules/Macros
CMQXRMSA
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UK97900
UP13/10/16 P F310
Fix is available
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Document Information
Modified date:
24 December 2015