The software on this pages will slowly be moved to GitHub https://github.com/hilbix/. The CVS repository will be migrated to GIT as well, so the history will be preserved, a bit. See FAQ.
The tools are developed under Linux with
release early, release often
So you can consider this beta software, or alpha, or pre-alpha, or even worse ;)
Have a look in the download directory for all downloads.
As always here, all you get is the source. No binaries here.
Slowdown processes or pipes. (look into latest version, download latest version 0.2.1-20090204-160027, sig)
Note that there is a similar project called slowdown at freshmeat.net running under SunOS and Linux.
My version here is designed for modern Linux only to slowdown pipes and processes. It slowdowns all syscalls, not only the IO ones. It can be used as a pipe, can slowdown forked processes and attach to already running processes.
For more please look into README.
Delay must be in sane area now, a delay higher than 1 hour now is rejected.
Install path changed to /usr/local/bin/
download (15033 bytes)
Minor bugfix and added "slowdown 0 PID" to detach a "hung" process.
If you attach to a process with something like
slowdown 100 PID
and then kill slowdown with ^C, this very likely leaves a hung PID, because slowdown (not yet) detaches the PID and leaves it in the traced state. You now can recover from this using
slowdown 0 PID
which undoes the trace effect and (nearly) immediately returns. Note that it's likely that you don't see this hanging effect easily if you use
slowdown 1 PID
as the minimal timer resolution usually is somewhat around 15, so a faster timer is faked such that it's likely that you do not kill slowdown when the child is in traced state.
download (14026 bytes)
Minor improvements in reporting and delay processing.
download (12411 bytes)
First version. It works.
License and Disclaimer
All you can see here is free software according to the GNU GPL.