3453 PowerVM AIX Monitoring SAN IO to from memory V3.7 Sept15-2024 earlj.pdf

1、October 21-24,2024Mandalay Bay Convention CenterLas Vegas,NevadaPowerVM AIX:Monitoring SAN I/O to/from memory Session Code 3453Earl Jew ()310-251-2907 cell Consulting IT Management ConsultantIBM Power and IBM Systems Storage IBM Technology Expert Labs-Power delivery practiceIBM Technology Expert Lab

2、s/USA Copyright IBM Corporation 20242PowerVM AIX:Monitoring SAN I/O to/from memoryABSTRACTEvaluating SAN I/O performance with AIX:iostat is an easy direct practice compared to the other end.Most of us forget:All SAN Reads must be received in real memory and all SAN Writes must be staged in real memo

3、ry before flushing to SAN,i.e.,real memory is the other end.Compared to SAN I/O monitoring,evaluating how quickly memory receives SAN Reads and stages SAN writes is ignored.Given the extraordinary throughput and responsiveness of SSD/Flash media at 50%idle Problematic Themea999007 PowerVM AIX:The 6

4、layers of the PowerVM CPU nomenclature at SMT8PowerVM Conceptsa999008 PowerVM AIX:Monitoring CPUtime recycling at SMT8Defining excess CPUtimea999009 PowerVM AIX:Minimizing CPUtime recycling at SMT8Reducing excess CPUtimea999010 PowerVM AIX:Monitoring SAN I/O to/from memoryEvaluating SAN I/Oa999011 P

5、owerVM AIX:Mapping the path of workload executionDeep Science monitoringPowerVM AIX:Monitoring SAN I/O to/from memoryABSTRACTEvaluating SAN I/O performance with AIX:iostat is an easy direct practice compared to the other end.Most of us forget:All SAN Reads must be received in real memory and all SAN

6、 Writes must be staged in real memory before flushing to SAN,i.e.,real memory is the other end.Compared to SAN I/O monitoring,evaluating how quickly memory receives SAN Reads and stages SAN writes is ignored.Given the extraordinary throughput and responsiveness of SSD/Flash media at 1.0ms average se