Re: Shared memory segment IDS 9.4

"Wojtek Korg'l" <wkorgol@nospam.gazeta.pl> wrote in message news:<c951f9$7qa$1@inews.gazeta.pl>... > Hi, > > I defined 1200000 BUFFERS in $ONCONFIG file for IDS 9.4/AIX 5.3. I used a > formula from Performance Guide and counted that the buffers should take in > resdident portion of shared memory about 1200000 * 4 kB + 1200000 * 254 ~ > 5 GB. I started IDS and found ( onstat -g seg ) that resident portion of > shared memory was about 4,2 GB ( more less than I expected ) and virtual > segment was very large. I found in machine notes that "The maximum size of > any shared memory segment is 4294705152 bytes", so I thought that AIX could > not make more then 4,2 GB segment for the buffers. How did IDS create > 1200000 buffers in this situation? Are the over resident segment buffers > moved to virtual segments, or IDS creates only so many buffer that can be > held in resident portion? > > Thanks, > Wojtek <!> When did AIX 5.3 come out? <!>