单项选择题

After issuing the nfsstat -rs command， the null received column starts to grow. This indicates which of the following conditions？（）

A. Not enough NFS daemons running
B. Too many NFS daemons running
C. nfs_tcp_socketsize is too small
D. nfs_tcp_socketsize is too large

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热门试题

单项选择题Whichofthefollowingistrueaboutrmss？（）

A. rmss is a part of performance toolbox and stands for Reduced Memory System Simulator
B. rmss is a part of perfpmr and stands for Real Memory System Simulator
C. rmss is part of the standard bos.perf filesets and stands for Redundant Memory System Simulator
D. rmss is part of WLM and stands for Real Memory System Simulator

单项选择题Asystemadministratorincreasesthembufpoolallocation，thenrunsvmstat.Itisnoticedthatthepagingratehasnotdecreased.Whatisthemosteffectiveoptiontomaintainthembufpoolanddecreasepaging？（）

A. Increase the number of CPUs.
B. Increase the physical memory.
C. Set the PSALLOC environment variable to ’late’.
D. Set the PSALLOC environment variable to ’early’.

单项选择题ATCP IPapplicationistransferringfilesfromapersonalmachinetoaremotemachine.Theapplicationwrites32kilobytesofdataatatimetothesocket，buthasnotissuedasystemcalltosetthewindowsize.Whichofthefollowingproceduresshouldbeperformedonthepersonalmachinetoincreasethethroughputoftheapplication？（）

A. Increase the size of thewall
B. Increase the size of sb_max
C. Increase the size of tcp_recvspace
D. Increase the size of tcp_sendspace

单项选择题AnAIXsystemadministratorneedstoadjustthemaximumamountofmemorythatcanbepinned.Whichofthefollowingcommandsisusedtomakethechange？（）

A. vmtune -M
B. svmon -m
C. vmstat -s
D. schedtune -m

单项选择题WhichofthefollowingRAIDlevelsprovidethebestperformanceforasystemwheretherearemostlywritesoccurring？（）

A. RAID 0
B. RAID 1
C. RAID 3
D. RAID 5