Re: Strange Lockups on IDS 7.31.UD8

Hi, the onconfig file parameters look fine. Check the AF-file (/db0/tmp/af.482edd9) as adviced in the online.log. If that doesn't clarify things, you should probably open a "Case" with IBM Informix Tech Support to have them help analyze the cause of this. They may also request the SHM dump (file shmem.482edd9.0) for analysis. I'm not sure whether the message about the "bad I/O request" is directly connected to the preceeding messages, but it may well be. Tech Support will be able to tell by the chunk and page number ... I've seen systems that had such "transient I/O errors" not because of the I/O subsystem, but because of processor cache latency that showed different content of the same page to different CPUs. And that is just one possibility ... The listener-thread message most probably has a different cause. Regards, Martin -- Martin Fuerderer IBM Informix Development Munich, Germany Information Management owner-informix-list@iiug.org wrote on 16.08.2005 23:37:23: > The machine is the same one that we've been using for about ... 2 > years. We've been running IDS on it the whole time. > > However, that doesn't mean those values haven't been wrong the whole > time. The values for the parameters you asked about are: > > MULTIPROCESSOR 1 # 0 for single-processor, 1 for> multi-processor > NUMCPUVPS 2 # Number of user (cpu) vps > SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vps> to one > > I also noticed the index errors from last Thursday look more like: > > 09:44:58 Assert Failed: ptmap > 09:44:58 IBM Informix Dynamic Server Version 7.31.UD8 > 09:44:58 Who: Session(19, informix@corp.inventconnect.com, -1,> 2146684976) > Thread(154, sqlexec, 7ff2b3c0, 1) > File: rspartn.c Line: 1867 > 09:44:58 Results: Could not complete operation on> 'development:"root".invention' > 09:44:58 Action: Run 'oncheck -cDI development:"root".invention' > 09:45:02 See Also: /db0/tmp/af.482edd9, shmem.482edd9.0 > 09:46:35 I/O bad request chunk 4095, pagenum 1048575, pagecnt 1 > 09:46:39 listener-thread: err = -25587: oserr = 0: errstr = : Network> receive failed. > > However, running an oncheck -cDI doesn't show any problems (other than > the bad index). I would expect to see something about a bad chunk. > Isn't that what the above error states? > > --Anthony sending to informix-list