A fix is available
APAR status
Closed as program error.
Error description
This is not a real defect. Currently When netmalloc error checklevel is set to 5 or above, OSTD is turned on, which will use a fixed size 11 hash size bucket. If a machine has a lot of cpus and with heavy load, and OSTD is turned on, it will have performance impact. We are enhancing it by setting ostd hash bucket size based on the number of cpus running on the box at boot time.
Local fix
Problem summary
This is not a real defect. Currently When netmalloc error checklevel is set to 5 or above, OSTD is turned on, which will use a fixed size 11 hash size bucket. If a machine has a lot of cpus and with heavy load, and OSTD is turned on, it will have performance impact. We are enhancing it by setting ostd hash bucket size based on the number of cpus running on the box at boot time.
Problem conclusion
At boot time, we set ostd hash bucket size to be max(11, number_of_cpu_running), of which 11 is the old default value.
Temporary fix
Comments
6100-09 - use AIX APAR IV63114 7100-03 - use AIX APAR IV63117
APAR Information
APAR number
IV63117
Reported component name
AIX V7.1
Reported component ID
5765H4000
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2014-07-31
Closed date
2014-07-31
Last modified date
2016-05-11
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
U868053
Fix information
Fixed component name
AIX V7.1
Fixed component ID
5765H4000
Applicable component levels
R710 PSY U868053
UP14/10/29 I 1000
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Document Information
Modified date:
11 May 2016