Messages in this thread |  | | | Date | Wed, 17 Nov 2010 17:55:57 +0200 | | From | Avi Kivity <> | | Subject | Re: [ANNOUNCE] New utility: 'trace' |
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On 11/17/2010 05:41 PM, Tom Zanussi wrote: > >> The only reason why these filters might make sense is to reduce the >> trace volume on system wide traces in production environments, but >> that's a completely different story. These scenarios can do with the >> dynamic tracepoint stuff and the custom filtering w/o putting the >> burden on the majority of users. >> > Yeah, in my mind, the main point of the filters was to be a 'blunt > force' instrument preventing userspace from being overwhelmed by events. > The real filtering would happen in userspace with e.g. real scripting > languages. >
Filtering is also useful for fine-grained perf events; this cannot be done in userspace.
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