medium10 pts · first answer countslinux-performancetroubleshooting

Reading vmstat output

A database host is slow. Based on this vmstat output, where should you look next?

procs -----------memory---------- ---swap-- -----io---- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo us sy id wa
 1 14      0 812340  10240 9123400    0    0 48210  9120  6  4 22 68

A.CPU is saturated by user code, so profile the applicationB.The system is swapping heavily, so add RAMC.Many processes are blocked on disk I/O, so check disk latency and queue depth with iostat -xD.The network card is dropping packets

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Reading vmstat output

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