／var／logmarcus chiu

UNIX - Performance Observability Commands

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  • vmstat - reports information about processes, memory, paging, block IO, traps, and CPU activity
  • iostat - reports CPU and input/output statistics of the system
  • netstat - displays statistical data related to IP, TCP, UDP, and ICMP protocols
  • lsof - lists open files of the current system
  • pidstat - monitors the utilization of system resources by all or specified processes, including CPU, memory, device IO, task switching, threads, etc
  • strace
  • ltrace
  • ss
  • nstat
  • opensnoop
  • lsof
  • fatrace
  • filelife
  • pcstat
  • perf
  • Ftrace
  • LTTng
  • BCC
  • bpftrace
  • ext4dist
  • ext4slower
  • iostat
  • biosnoop
  • biolatency
  • biotop
  • blktrace
  • SCSI log
  • swapon
  • ethtool
  • snmpget
  • lldptool
  • nicstat
  • netstat
  • ip
  • mdflush
  • perf
  • tiptop
  • tcpdump
  • tcplife
  • tcpretrace
  • udpconnect
  • numastat
  • vmstat
  • slabtop
  • free
  • hardirqs
  • criticalstat
  • top
  • atop
  • ps
  • pidstat
  • execsnoop
  • mpstat
  • profile
  • runqlen
  • offcputime
  • softtirqs
  • turbostat
  • showboost
  • rdmsr
  • gethostlatency
  • sar
  • /proc
  • dmesg
  • dstat