A fix is available
APAR status
Closed as program error.
Error description
Dosumentation for no option:ndogthreads states: A value of 0 sets it to default ie dog threads equal to the number of CPUs. Max value is 1024. This is not correct. The maximum number of dog threads is currently capped at 256 even if more cpus are available. -------------------------------------------------------- no -h ndogthreads Help for tunable ndogthreads: Purpose: Specifies the number of dog threads that are used during hashing. Values: Default: 0 Range: 0 - 1024 Type: Dynamic Unit: numeric Tuning: This option is valid only if dog threads are enabled for an interface. A value of 0 sets it to default ie dog threads equal to the number of CPUs. Max value is 1024. The minimum of tunable value and the number of cpus is taken as the number of dog threads during hashing.
Local fix
The number of dog threads is determined at system initialization time as the smaller of "number of cpus" or 256. ndogthreads determines how many of these threads are active. The incoming packets are hashed across the number of active threads based on ipaddress and port (if available) unless they are raw. Raw packets are mapped to dog 0. Note that a single connection will utilize a single dog thread.
Problem summary
Help message of 'ndogthreads' no option is not clear on the number of dog threads created.
Problem conclusion
Modified the help message of 'ndogthreads' to state the purpose of this tunable and how the number of dog threads created is calculated.
Temporary fix
Comments
6100-08 - use AIX APAR IV61559 6100-09 - use AIX APAR IV67460 7100-02 - use AIX APAR IV70190 7100-03 - use AIX APAR IV67514
APAR Information
APAR number
IV67460
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2014-12-02
Closed date
2014-12-02
Last modified date
2015-11-22
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
AIX 610 STD EDI
Fixed component ID
5765G6200
Applicable component levels
R610 PSY U861500
UP15/11/22 I 1000
PTF to Fileset Mapping
U865882 bos.net.tcp.client 6.1.9.45
U861500 bos.net.tcp.client 6.1.9.100
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Document Information
Modified date:
17 December 2021