From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux 2.2.19-7.0.1 i686; en-US; 0.8.1) Gecko/20010326 a comment from drdisk in bug 19129.. - /usr/bin/run-parts from crontabs-1.8-1 (which actually runs the stuff in /etc/cron.* hangs while executing sysstat's hourly entry until sa1 exits, despite sa1 beeing started with &, which it does after an hour, just when the next run should occur, thus effectively delaying all cron.hourly entries that are lexically greater than sysstat by one hour. Might be the cause for problems I'm experiencing (crontab entries are run multiple times within seconds) fellow's quite right, so I'm filing this separate bug for him funny thing about that run-parts thing (sleep 5&) && echo foo echos foo immediately (sleep 5&) | cat - && echo foo waits 5 seconds before echoing foo. run-parts puts it's subserviants through an awk pipe, so that's apparently why we're seeing that waiting around. no terribly quick fix for this I think, and anyway this is being done the wrong way in the first place. I'm pretty sure crond should be able execute it's charges in serial and not have people trying to fork off into the background on it. sysstat's /etc/cron.* scripts are the only ones that try to do this. What shouldn't be done is having an hourly crond script that runs for an hour, instead it should be a /etc/cron.d script that runs once every 10 mins like this: */10 * * * * root /usr/lib/sa/sa1 1 1 run every 10 mins with an (arbitrary) 1 second interval and a (more important) iteration count of 1
agreed. Changed to the behaviour as you have suggested in sysstat-4.0.1-1 and later.