Using Informix Online on SCO with KAIO

Posted in 1997

Paul Mahoney — 16 Dec 1997 16:08:13 GMT — source: Informix-list mailing list archive (1991-1998)

We have just installed Informix Online 7.23 on a SCO 5.0.2 system and have enabled KAIO (Kernel Asynchronous I/O). While testing, Informix fell over and the following message was logged in /usr/adm/message: CPU3: CONFIG: aio_breakup -s AIO request table overflow (NAIOREQ = 120 exceeded) So we reconfigure the kernel, having increased all KAIO relevant tunable parameters to the SCO recommended maximums: NAIOPROC 16 NAIOREQ 200 NAIOBUF 200 NAIOHBUF 50 NAIOREQPP 200 NAIOLOCKTBL 20 The system fell over again... CPU3: CONFIG: aio_breakup -s AIO request table overflow (NAIOREQ = 200 exceeded) Informix have yet to tell us how we should determined workable values for these tunable parameters. We don't know what the dependancies are. If someone out there has already been through this loop, could they drop me a line? Thanks.