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Message Posted: Fri, 09 Apr 2004 @ 16:19:55 GMT
<-- Anonymously Posted: Friday, April 09, 2004 12:04 -->
Can anyone tell me what these Performance Monitor memory columns represent? All four appear on the node/physical screen, but only the first two appear on the vproc/logical screen. The Teradata Manager User Guide only says this much:
Mem Segs Allocated - The number of segments allocated to memory resources
Mem KB Allocated - The number of Kilobytes allocated to memory resources
Mem Failures - The number of segment allocation attempts that failed
Mem Segs Agings - The number of memory agings and collections done on old segments
Where do these values come from? I can guess that MemFailures is the same as ResUsageSpma column MemFails, and that MemSegAgings is the same as ResUsageSpma column MemAgings. And perhaps the node/physical "allocated" columns tie back to MemTextAllocs and/or MemVprAllocs and/or MemVprAllocKB in ResUsageSpma. And perhaps the vproc/logical "allocated" columns tie back to Mem[seg]Allocs and/or Mem[seg]AllocKB and/or MemCtxtAllocs, where [seg] has 6 possible values, in ResUsageSvpr? But how?
Is there anyway that these columns can tell me when the amount of free memory is low?? Can I somehow subtract the amount allocated from the total available to figure out what's free?
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