Difference between revisions of "Performance monitoring"
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tcpdump - Network packet capture (Sniffer) | tcpdump - Network packet capture (Sniffer) | ||
| − | # tcpdump -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) | ||
Revision as of 18:47, 1 February 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)
Collectl - Powerful and feature rich command line utility that monitors CPU, memory, disk and network
iptraf - Real time IP and network monitoring
# iptraf
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, ntop, apache mod_status