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annotate src/share/tools/LogCompilation/README @ 7196:2aff40cb4703

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7092905: C2: Keep track of the number of dead nodes Summary: keep an (almost) accurate running count of the reachable (live) flow graph nodes. Reviewed-by: kvn, twisti, jrose, vlivanov
author bharadwaj
date Tue, 27 Nov 2012 17:24:15 -0800
parents 07d449658fc7
children 01b268b3080a
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1 This is a very rough tool for parsing -XX:+LogCompilation output.
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2 It's main purpose is to recreate output similar to
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3 -XX:+PrintCompilation -XX:+PrintInlining output from a debug JVM. It
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4 requires a 1.5 JDK to build and simply typing make should build it.
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5
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6 It produces a jar file, logc.jar, that can be run on the
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7 hotspot.log from LogCompilation output like this:
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8
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9 java -jar logc.jar hotspot.log
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10
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11 This will produce something like the normal PrintCompilation output.
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12 Adding the -i option with also report inlining like PrintInlining.
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13
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14 More information about the LogCompilation output can be found at
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15
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2aff40cb4703 7092905: C2: Keep track of the number of dead nodes
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16 https://wikis.oracle.com/display/HotSpotInternals/LogCompilation+overview
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17 https://wikis.oracle.com/display/HotSpotInternals/PrintCompilation
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18 https://wikis.oracle.com/display/HotSpotInternals/LogCompilation+tool