stats takes the same sorting and count options as summary. Processes using the -p/ -pid for a specific process, or -s/ -stats flags forĪ sorted list. The number of results defaults to 25 processes, butĬan be changed using the -c/ -count option. You can also sort based on total time, # of system calls made, PID #, and # of child processes How to use the toolįirst run the tool with summary flag to get a summary of the top processes sorted by time spent actively performing tasks. Or you can build it from source if you have the Rust compiler. It is similar to strace -C,īut provides much more detailed statistics. Provide a high level summary of the strace output. We have a series of GitLab Unfiltered videos on using strace to understand GitLab.Brendan Gregg has a more detailed explanation of how to use strace. See the strace zine for a quick walkthrough. While it's totally possible, I like to keep it simple, as, most of the time, I only need speed.# strace a process strace -tt -T -f -y -yy -s 1024 -p # -tt print timestamps with microsecond accuracy # -T print the time spent in each syscall # -f also trace any child processes that forked # -y print the path associated with file handles # -yy print socket and device file handle details # -s max string length to print for an event # -o output file # run strace on all puma processes ps auwx | grep puma | awk '' | xargs strace -tt -T -f -y -yy -s 1024 -o /tmp/puma.txtīe aware that strace can have major impacts to system performance when it is running. There are dozens of combos you might want to try, for example, applying grep on each result of the find command. mydir -type f -print0 | xargs -0 chmod 0644Ībout find, grep, and more complex commands
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