...in progress...
keywords: Server, Performance Problem, langsam, Platte, SSD, Verzögerungen
Get the top 10 CPU consuming process
ps aux | sort -n -k 3 | tail -10
Get the top 10 memory consuming process
ps aux | sort -n -k 4 | tail -10
Recherchieren: Get the top 10 i/O consuming process
Zu prüfen:
top
mit c togglen volles command
htop
iotop -o # Only show processes or threads actually doing I/O, instead of showing all processes or threads.
iotop -bo # Turn on non-interactive mode. Useful for logging I/O usage over time. Zeigt komplettes command an.
Get PID (process ID) from TID (thread ID)
ps -eLo pid= -o tid= | awk '$2 == [TID] {print $1}'
Get full command for the PID
ps -p [PID] -o command
top -p [PID]
I/O
Läuft gerade ein Festplattencheck? Raid-Status prüfen
cat /proc/mdstat
md1 : active raid1 sdb2[1] sda2[0]
523712 blocks super 1.2 [2/2] [UU]
md2 : active raid1 sdb3[1] sda3[0]
1919300672 blocks super 1.2 [2/2] [UU]
[===================>.] check = 97.3% (1867548352/1919300672) finish=20.8min speed=41273K/sec
bitmap: 9/15 pages [36KB], 65536KB chunk
md0 : active raid1 sdb1[1] sda1[0]
33521664 blocks super 1.2 [2/2] [UU]
testen:
atop
glance
ytop
ctop