Messages in this thread | | | Date | Tue, 6 Dec 2011 10:29:05 +0100 | From | Robert Richter <> | Subject | Re: [PATCH] perf: make perf.data more self-descriptive (v8) |
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On 05.12.11 11:24:05, Stephane Eranian wrote: > The one thing I realized last week, is that all that header information, incl. > the features bits do not seem to appear in the file perf.data file when you > use the perf record pipe mode. We need to fix that otherwise, if you > depend on information in those bits, it won't always be present. That's > a major issue.
Yes, this is because pipes are not seakable, which is necessary to write the features.
-Robert
-- Advanced Micro Devices, Inc. Operating System Research Center
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