The strace analyser is a strace postprocessor. It can track file/network requests and write down timings.
Linux-only due to strace :)
pip install https://github.com/riarheos/strace-analyser/archive/master.zip
or (Debian/Ubuntu way)
git clone https://github.com/riarheos/strace-analyser.git
cd strace-analyser
debuild
dpkg -i ../strace-analyser_*.deb
strace -f -ttt -v -qq -T -s 1024 -p <PID> 2>&1 | strace-analyser