Re: VPCLASS 'cpu' not enough physical procs for affinity

"kh teoh" <khteoh2001@yahoo.com> wrote: > I'm running IDS 9.30.UC2 on Redhat 7.1 in HP Netserver LXr8500 PIII > Xeon-700. The server has 4 processors. In my onconfig file I've the > following settings :- > > MULTIPROCESSOR 1 # 0 for single-processor, 1 for> multi-processor > NUMCPUVPS 3 # Number of user (cpu) vps > SINGLE_CPU_VP 0 # If non-zero, limit number of cpuvps > to one > > NOAGE 0 # Process aging > AFF_SPROC 1 # Affinity start processor > AFF_NPROCS 3 # Affinity number of processors > > NUMAIOVPS 2 # Number of IO vps> > When I online the database I've got the warning msg(same as the > subject above) shown in the online log. > > I read thru the release note and found out the following description > :- > > Features not supported: > ====================== > > The following features are not supported in this release because of > operating system limitations: > > 1. Processor Affinity > > 2. Kernel AIO is not available in Linux 2.2. > > 3. OnSNMP > > 4. Operating system audit > > Does this mean that I can't make use of the multiprocessor feature and > I've to setting the parameter as below ? > > MULTIPROCESSOR 0 # 0 for single-processor, 1 for> multi-processor > NUMCPUVPS 1 # Number of user (cpu) vps > SINGLE_CPU_VP 0 # If non-zero, limit number of cpuvps > to one > > NOAGE 0 # Process aging > AFF_SPROC 0 # Affinity start processor > AFF_NPROCS 0 # Affinity number of processors > > NUMAIOVPS # Number of IO vps I'd say that only affinity, the capability of "locking" a process on a certain CPU, is not available. So you can happily use many CPU VPS: MULTIPROCESSOR 1 # 0 for single-processor, 1 formulti-processor NUMCPUVPS 3 # Number of user (cpu) vps SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vpsto one NOAGE 0 # Process aging AFF_SPROC 0 # Affinity start processor AFF_NPROCS 0 # Affinity number of processors NUMAIOVPS 2 # Number of IO vps As a side note, beware that it's a good idea to leave multiprocessor support always enabled on a multiprocessor system. So the right way of using just one CPU VP on your system would be: MULTIPROCESSOR 1 # 0 for single-processor, 1 formulti-processor NUMCPUVPS 1 # Number of user (cpu) vps SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vpsto one NOAGE 0 # Process aging AFF_SPROC 0 # Affinity start processor AFF_NPROCS 0 # Affinity number of processors NUMAIOVPS 2 # Number of IO vps In fact, your system has many processors anyway. Multiprocessor locking is always a good idea in this case. Umberto