Performance:Probes: Difference between revisions
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We propose to build a system of probes to monitor Gecko performance, with a focus on breaking down time and space consumption by subsystem. The goal is to get results that are finer-grained than Tp/Tp2 etc, which measure the browser as a whole, but coarser-grained than profiling, which works at a per-function level and does not aggregate multiple functions that are parts of the same subsystem. | We propose to build a system of probes to monitor Gecko performance, with a focus on breaking down time and space consumption by subsystem. The goal is to get results that are finer-grained than Tp/Tp2 etc, which measure the browser as a whole, but coarser-grained than profiling, which works at a per-function level and does not aggregate multiple functions that are parts of the same subsystem. | ||
== Requirements == | |||
== nsProbes == | |||
"nsProbes" is a proposal to insert probes programmatically; see [http://groups.google.com/group/mozilla.dev.platform/browse_thread/thread/48d2a33d08d6d14/c22c2de42b97bd4d?lnk=st&q=mozilla+nsprobes&rnum=1#c22c2de42b97bd4d] | |||
for details. | |||
== DTrace == | |||
DTrace [http://docs.sun.com/app/docs/doc/817-6223] is a general dynamic tracing framework produced by Sun. It is a powerful system that includes OS kernel integration and a scripting language. Mozilla integration for static probing has been submitted as a patch; see [https://bugzilla.mozilla.org/show_bug.cgi?id=370906 370906]. | |||
DTrace is only fully functional for Solaris, but is being worked on for FreeBSD and is expected to be part of Mac OS X 10.5 (Leopard). | |||
Revision as of 17:35, 1 August 2007
Probing is the general concept of instrumenting code in a selective way to collect particular kinds of data. Probes can consist of special code compiled into a program, and/or a monitoring mechanism inserted by an external program.
We propose to build a system of probes to monitor Gecko performance, with a focus on breaking down time and space consumption by subsystem. The goal is to get results that are finer-grained than Tp/Tp2 etc, which measure the browser as a whole, but coarser-grained than profiling, which works at a per-function level and does not aggregate multiple functions that are parts of the same subsystem.
Requirements
nsProbes
"nsProbes" is a proposal to insert probes programmatically; see [1] for details.
DTrace
DTrace [2] is a general dynamic tracing framework produced by Sun. It is a powerful system that includes OS kernel integration and a scripting language. Mozilla integration for static probing has been submitted as a patch; see 370906.
DTrace is only fully functional for Solaris, but is being worked on for FreeBSD and is expected to be part of Mac OS X 10.5 (Leopard).