Difference between revisions of "Performance monitoring"
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# tcpdump -n -i eth0 src host 10.1.1.1 and dst host 10.1.1.10 and port 80 | # tcpdump -n -i eth0 src host 10.1.1.1 and dst host 10.1.1.10 and port 80 | ||
# tcpdump -w - | tee capture.pcap | tcpdump -r - (write to file and standard output the same time) | # tcpdump -w - | tee capture.pcap | tcpdump -r - (write to file and standard output the same time) | ||
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| − | |||
iptraf - Real time IP and network monitoring | iptraf - Real time IP and network monitoring | ||
# iptraf | # iptraf | ||
| + | |||
| + | Also check ntop, iftop, pftop, trafshow | ||
vmstat - Display statistics of virtual memory, kernel, disks, process, I/O blocks and CPU activity | vmstat - Display statistics of virtual memory, kernel, disks, process, I/O blocks and CPU activity | ||
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# iostat -n | # iostat -n | ||
| − | Additional tools: iperf, | + | Additional tools: iperf for traffic generation, and apache mod_status |
| + | And Collectl - Powerful and feature rich command line utility that monitors CPU, memory, disk and network | ||
Revision as of 02:49, 30 March 2017
top - Interactive process monitoring tool
# top
lsof - List open files and sockets/pipes as well
# lsof
htop - Advanced interactive process monitoring tool
# htop
iotop - Display real time Disk I/O and process
# iotop
tcpdump - Network packet capture (Sniffer)
# tcpdump -n -i eth0 src host 10.1.1.1 and dst host 10.1.1.10 and port 80 # tcpdump -w - | tee capture.pcap | tcpdump -r - (write to file and standard output the same time)
iptraf - Real time IP and network monitoring
# iptraf
Also check ntop, iftop, pftop, trafshow
vmstat - Display statistics of virtual memory, kernel, disks, process, I/O blocks and CPU activity
# vmstat # vmstat -s (other visualization) # vmstat -S m (show MB instead of KB)
iostat - Display statistics of CPU, disk I/O and NFS
# iostat # iostat -m (show MB/sec instead of blocks/sec) # iostat -n
Additional tools: iperf for traffic generation, and apache mod_status And Collectl - Powerful and feature rich command line utility that monitors CPU, memory, disk and network