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authorFrank Ch. Eigler <fche@elastic.org>2008-04-25 16:33:24 -0400
committerFrank Ch. Eigler <fche@elastic.org>2008-04-25 16:33:24 -0400
commit76d647dc1fdf1d6bb4397f4a3b819003492dfda6 (patch)
tree51b9d7a1f0ee75a41c487828d5e62c6a70b7fd28 /testsuite/systemtap.examples/futexes.txt
parentc47ccf304e6560cb50c86c2a5213c8de56678449 (diff)
parent9f99b110fbee8a6935ca60c152cc3c7cd809461b (diff)
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Merge branch 'master' of ssh://sources.redhat.com/git/systemtap into pr6429-comp-unwindsyms
* 'master' of ssh://sources.redhat.com/git/systemtap: simplify systemtap.spec configuration vars Handles markers with no format string. Fixed task_finder.c kernel 2.6.25 change. PR6454: fix "stap -l" listing of space-laden probe point names Move examples to testsuite/systemtap.examples. PR6451: avoid one class of staprun shutdown deadlock (module/.ctl filehandle = 0) Made kernel 2.6.25 changes in task_finder.c. Move examples to testsuite/systemtap.examples PR6416: extend probing blacklist with more init/exit sections
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+From: http://sourceware.org/systemtap/wiki/WSFutexContention
+
+# stap futexes.stp
+^C
+liferea-bin[3613] lock 0x0a117340 contended 1 times, 71 avg us
+java_vm[8155] lock 0x09baa45c contended 9 times, 1004013 avg us
+java_vm[8155] lock 0x09d6f9ac contended 186 times, 55964 avg us
+xmms[16738] lock 0xbfe29eec contended 777 times, 69 avg us
+xmms[16738] lock 0xbfe29ecc contended 119 times, 64 avg us
+xmms[16738] lock 0xbfe29ebc contended 111 times, 68 avg us
+xmms[16738] lock 0xbfe29ef0 contended 742 times, 91 avg us
+xmms[16738] lock 0xbfe29ed0 contended 107 times, 101 avg us
+xmms[16738] lock 0xbfe29ec0 contended 107 times, 74 avg us
+firefox-bin[21801] lock 0x096d16f4 contended 24 times, 12 avg us
+firefox-bin[21801] lock 0x096d1198 contended 2 times, 4 avg us
+firefox-bin[21801] lock 0x096d16f8 contended 150 times, 64997 avg us
+named[23869] lock 0x41ab0b84 contended 1 times, 131 avg us
+named[23869] lock 0x41ab0b50 contended 1 times, 26 avg us