Looks like more jobs are running:
manybubbles@fluorine:/a/mw-log$ grep cirrus runJobs.log | cut -d':' -f 1 | sort | uniq -c | sort -rn
1069202 2014-02-27 20
1039614 2014-02-27 21
993906 2014-02-27 19
740468 2014-02-27 22
598017 2014-02-27 18
402160 2014-02-27 08
376721 2014-02-27 09
371530 2014-02-27 10
370015 2014-02-27 11
358536 2014-02-27 17
356199 2014-02-27 15
351474 2014-02-27 12
346836 2014-02-27 16
337794 2014-02-27 14
333979 2014-02-27 13
296879 2014-02-27 07

Lots more.

Maybe it is just changes....

Spike went away. No big deal.