Presics + trusty lts kernel (3.13.0-27)
~$ sudo perf record -g dwarf -a
dwarf: No such file or directory
strace output:
11268 10647 execve("/usr/local/sbin/dwarf", ["dwarf", "-a"], [/* 28 vars */]) =
-1 ENOENT (No such file or directory)
11269 10647 execve("/usr/local/bin/dwarf", ["dwarf", "-a"], [/* 28 vars */]) =
-1 ENOENT (No such file or directory)
11270 10647 execve("/usr/sbin/dwarf", ["dwarf", "-a"], [/* 28 vars */]) = -1
ENOENT (No such file or directory)
11271 10647 execve("/usr/bin/dwarf", ["dwarf", "-a"], [/* 28 vars */]) = -1
ENOENT (No such file or directory)
11272 10647 execve("/sbin/dwarf", ["dwarf", "-a"], [/* 28 vars */]) = -1 ENOENT
(No such file or directory)
11273 10647 execve("/bin/dwarf", ["dwarf", "-a"], [/* 28 vars */]) = -1 ENOENT
(No such file or directory)
11274 10647 dup(2) = 4
can't find dwarf ?
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https://bugs.launchpad.net/bugs/1248289
Title:
Missing libunwind support in perf
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