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47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
This is a sampling profiler that uses a kernel module, sysprof-module,
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to generate stacktraces which are then interpreted by the userspace
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program "sysprof".
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- There is no auto* stuff. Just type "make" and hope for the best
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- You need gtk+ 2.4.0 or better. If you are using gtk+ 2.5 or greater,
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you also need libglade cvs HEAD.
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- You need a 2.6 kernel
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- The programs you want to profile should have debugging symbols, or
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you won't get much usable information. On a Fedora Core system,
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installing the relevant -debuginfo packages should do the trick.
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- To get usable data on the X server:
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(1) Compile the X server to use ".so" modules:
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- Uncomment the line "MakeDllModules Yes" in
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xc/config/cf/xorgsite.def
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- "make World"
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(2) Install the X server making sure it can't see any ".a" files. If
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You install on top of an existing installation, just do
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find /usr/X11R6/lib/"*.a" | sudo xargs rm
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and install the newly compiled X server. If a ".so" X server
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finds .a files in its module path it will try to load those
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in preference to .so files and this causes symbol resolution
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problems
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(3) Run your new X server
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(4) Run sysprof as root. This is necessary because the X server binary
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for security reasons is not readable by regular users. I could tell
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you why this is so, but then I'd have to kill you.
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Credits:
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Kristian Høgsberg for the first port to kernel 2.6
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Owen Taylor for the symbol lookup code in memprof
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Søren
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