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$NetBSD: README,v 1.7 2008/01/14 12:47:59 yamt Exp $
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$NetBSD: README,v 1.8 2008/01/14 12:48:52 yamt Exp $
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NOTE:
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- tprof driver currently only supports pentium4 (netburst) processors.
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if not set, SIZEOF_PTR=4 is assumed.
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1. add a line to your kernel config.
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pseudo-device tprof
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2. create a device special file.
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# mknod /dev/tprof c 191 0
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3. run the tprof command.
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# tprof -o /tmp/foo sleep 1
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tprof statistics:
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4. format the result.
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the first line in the following example means that 11 samples have been
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taken at 0xc0396c36, whose symbolic name is lapic_gettick+0x6.
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# sh ./tpfmt.sh < /tmp/foo
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11 c0396c36 lapic_gettick+0x6
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5 c039b98a x86_pause+0x2
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5. tpann.sh is another formatter. it outputs "objdump -d" with numbers of
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samples for each addresses.
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# tprof -o /tmp/bar sleep 100
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# sh ./tpann.sh < /tmp/bar
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