单项选择题
A. schedtune -t B. vmtune -R C. schedtune -r D. schedtune -D
Thenicevalueis60inthepslisting.Whichcommandisusedtochan...
单项选择题The nice value is 60 in the ps listing. Which command is used to change this to a value of 20？（）
A. renice -n -20 {PID} B. renice -n 20 {PID} C. renice -n -40 {PID} D. renice -n 40 {PID}
Thenfsstat-ccommandshowszerobadxid，butretransandtimeout...
单项选择题The nfsstat -c command shows zero badxid， but retrans and timeouts are sizeable， what is the most probable cause of the problem？（）
A. Too many nfsd’s running B. Client and server with different buffer sizes C. Bridges， routers or gateways are receiving too many fragmentated packets D. Too few nfsd’s running
Asystemhasusersdoinginteractiveworkwhilebackgroundjobsa...
单项选择题A system has users doing interactive work while background jobs are running. Interactive users are requesting that system response time be improved for foreground processes. Which tuning parameters should be changed to accomplish this？（）
A. schedtune -h B. schedtune -r C. vmtune -f D. schedtune -w
