Clik here to view.
Chroniquery slightly more chronoriffic
So, I was playing with the fantastic Chronomancer (roc‘s announcement, project link), an Eclipse GUI for chronicle-recorder, using a trace from my PyXPCOM troubles. I discovered a lack of some symbols...
View ArticleClik here to view.
Hooray for dwarf location lists!
I resolved the time-stamp issues from last time. Arguments are now happy because we move to the time-stamp corresponding to when the function’s prologue had completed. The booleans were wrong because...
View ArticleClik here to view.
Chronicle-Recorder Graph/Ring Visualization! Hooray!
Thanks to new and improved time management skills (and a holiday weekend doesn’t hurt), I’ve got a chronicle-recorder visualization going on via chroniquery: Above, we have the visualization run...
View ArticleClik here to view.
chronicle-recorder and amd64, hooray!
My personal laptop rolls amd64-style (rather than i686), and chronicle-recorder’s valgrind component was not working on it (“illegal instruction”). I have done some vendor-branch dancing to get...
View ArticleClik here to view.
understanding libmime using chroniquery and unit tests
Mailnews’ libmime is one of the harder modules to wrap one’s head around. 8-letter filenames where the first four letters tend to be “mime”, home-grown glib-style OO rather than actual C++, and...
View ArticleClik here to view.
understanding where unit tests go wrong with object diffs
In our last chroniquery adventure, we used roc‘s chronicle-recorder to trace the execution of an xpcshell unit test and chroniquery (repo info) to use that trace to help us understand what was...
View ArticleClik here to view.
displaying execution traces on a SIMILE timeline
chroniquery can now output JSON for display using the SIMILE timeline widget. And I am finally done trying to figure out what was going wrong. Click the pictures to experience the timeline sensation...
View ArticleClik here to view.
Using VMWare Record/Replay and VProbes for low time-distortion performance...
The greatest problem with performance profiling is getting as much information as possible while affecting the results as little as possible. For my work on pecobro I used mozilla’s JavaScript DTrace...
View Article
