Re: ISAM ?

Guru wrote: > > What is a difference between ISAM reads, disk reads, page reads, buf > reads ? > I can watch it by onstat but I don't know exactly what it is. > Can YOU help me? Sure. dskreads are the number of read requests made to disk, some may be multiple page reads which is why this is lower than pagreads which records the number of physical pages requested in the dskreads. Bufreads is the number of times some data buffer was accessed for reading. (1 - (pagread / bufreads) ) * 100 is %cached. The reads on the isam line (second stats line) is number of calls to the RSAM library read function which may include multi-page reads from disk or from the buffer pool. The write stats are similar. Art S. Kagel