LRU queues

_______________________________________________________________ This message and any attachments are intended for the individual or entity named above. If you are not the intended recipient, please do not read, copy, use or disclose this communication to others; also please notify the sender by replying to this message, and then delete it from your system. Thank you. _______________________________________________________________ We recently upgraded to IDS 7.31.UC6 and I've noticed some differences in the onstat outputs. One I'm interested in is onstat -R. There are new priority levels. Can someone enlighten me on these or point me to some documentation. I didn't find any mention of it in the Answers Online for 7.3. TIA Colleen

"Colleen M. Morrow" wrote: > We recently upgraded to IDS 7.31.UC6 and I've noticed some differences > in the onstat outputs. One I'm interested in is onstat -R. There are new > priority levels. Can someone enlighten me on these or point me to some > documentation. I didn't find any mention of it in the Answers Online for > 7.3. TIA IDS 7.3x introduced buffer priority classes. Resident tables are class HIGH, index pages MED-HIGH, normal data MEDIUM, and index NODES and system catalogue pages are classed LOW. When a page needs a buffer to be read into it cannot flush a higher priority buffer only the same or lower class. This helps the more important data to stay resident. In 7.31 priority aging was introduced to prevent starvation of the lower classes. A buffer that has not been access in a certain time frame is demoted. This and the onstat output are documented in the new Administration Utilities Guide (or somthing like that). Art S. Kagel