Strace

Strace

Strace is a linux tool for tracing system calls and signals.

## Run peloton under strace
strace -o trace.server -f -t peloton -D /path/to/data

## Run psql under strace
strace -o trace.client -f -t psql postgres

The first flag is -f, which tells strace to follow the forked processes. The -o flag sends all the output to a file. We can also use the -ff flag, that sends the output corresponding to each forked process to a separate file. Very handy, that. Finally, we add a -t flag, which prepends each line with a timestamp.