Informix - Problem description
Problem IT15956 | Status: Closed |
AIX: ANY NON-CPU VPCLASS CONFIGURATION SPECIFYING 'NOAGE' WOULD YIELD ONINIT PROCESSES WITH SCHEDULING PRIORITY ZERO | |
product: | |
IBM IDS ENTRP E / 5724L2304 / B15 - IDS 11.50 | |
Problem description: | |
You might see oninit processes running at scheduling priority 0 (super-high), potentially getting the whole OS in trouble, if 'noage' is used in any VPCLASS configuration except for class 'cpu' VPs. E.g. VPCLASS fifo,num=4,noage would get you 4 fifo VPs running at priority 0. When doing this for class 'adm', not only the adm vp, but also some of its child processes would run at priority 0. Startup messages in online.log would contain lines like these: 11:55:10 VP pid=10551470 priority fixed at 0 11:55:10 VP pid=16646330 priority fixed at 0 11:55:10 VP pid=21495866 priority fixed at 0 | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * AIX users specifying VPCLASS with noage for non-CPU VP's and * * not specifying a value with the appropriate environment * * variable. * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Update to IBM Informix Server 12.10.xC8 or set the * * appropriate environment variable to specify a priority. * **************************************************************** | |
Local Fix: | |
As a workaround, if you still would like to configure noaging, e.g. for fifo VPs, you would use INFX_MSCVP_PRIORITY env var at server startup for specifying desired target priority, for instance: export INFX_MSCVP_PRIORITY=60 | |
Solution | |
Workaround | |
not known / see Local fix | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 30.06.2016 09.12.2016 09.12.2016 |
Problem solved at the following versions (IBM BugInfos) | |
12.10.xC8 | |
Problem solved according to the fixlist(s) of the following version(s) |