Monitoring the buffer caches

AvPF: Number of currently available buffers for prefetch quota allocation

Slots: Number of currently registered objects using buffer cache quota

PinUser: Number of objects using pin quota

PFUsr: Number of objects using prefetch quota

Posted: Number of objects that are pre-planned users of quota

UnPost: Number of objects that are ad hoc quota users

Locks: Number of mutex locks taken on the buffer allocator

Waits: Number of times a thread had to wait for the lock

-contentiondisplays many key buffer cache and memory manager locks

AU: Current number of active users

LRULks: Number times the LRU was locked (repeated for the temp cache)

woTO: Number times lock was granted without timeout (repeated for the temp cache)

Loops: Number times IQ retried before lock was granted (repeated for the temp cache)

TOs: Number of times IQ timed out and had to wait for the lock (repeated for the temp cache)

BWaits: Number of "Busy Waits" for a buffer in the cache (repeated for the temp cache)

IOLock: Number of times IQ locked the compressed I/O pool (repeated for the temp cache)

IOWait: Number of times IQ had to wait for the lock on the compressed I/O pool (repeated for the temp cache)

HTLock: Number of times IQ locked the blockmaps hash table (repeated for the temp cache)

HTWait: Number of times IQ had to wait for the blockmaps hash table (repeated for the temp cache)

FLLock: Number of times IQ had to lock the free list (repeated for the temp cache)

470

Page 490
Image 490
Sybase 12.4.2 manual 470