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.:: debugging ::.
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# print syscalls of process with all threads (-f) of running process
strace -f -p <pid>
# only trace certain syscalls
strace -f -p <pid> -e trace=open,socket
# trace signals delivered to process
strace -f -p <pid> -e signal
# dump stack of process and all threads
pstack <pid>
# print file flags
# +fg print file flag abbreviations
lsof +fg -p <pid>
# print process virt mem map
# compared to /proc/<>/maps it shows the size of the mappings
pmap <pid>
# get supported events
perf list
perf stat -p <pid>
perf stat -p <pid> -I <ms>
perf stat -p <pid> -e cycles,faults,cache-misses,context-switches
# -K hide kernel threads
perf top -F 99 -p <pid> -K
perf record -F 99 -p <pid>
perf record -F 99 -p <pid> --call-graph dwarf
perf record -F 99 -p <pid> -e instructions,cpu-cycles,faults,cache-misses,context-switches
# print supported events
ophelp
operf -p <pid>
opreport -c
opreport -l
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vim:sts=2:et:tw=80:cc=80:fo+=t:ft=help
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