* [PATCH] 5/6 Provide basic documentation for profiling
2003-03-05 17:25 ` [PATCH] 4/6 Fix the type of get_zholes_size for NUMA-Q Martin J. Bligh
@ 2003-03-05 17:26 ` Martin J. Bligh
0 siblings, 0 replies; 2+ messages in thread
From: Martin J. Bligh @ 2003-03-05 17:26 UTC (permalink / raw)
To: Linus Torvalds; +Cc: linux-kernel
People keep asking for this info, and Andrew asked me to put it under the
Documentation directory ... provides really simple instructions for taking
a profile so that users can report performance changes in a useful way.
diff -urpN -X /home/fletch/.diff.exclude 015-numaq_zholes_warning/Documentation/basic_profiling.txt 020-prof_docs/Documentation/basic_profiling.txt
--- 015-numaq_zholes_warning/Documentation/basic_profiling.txt Wed Dec 31 16:00:00 1969
+++ 020-prof_docs/Documentation/basic_profiling.txt Wed Mar 5 07:48:44 2003
@@ -0,0 +1,48 @@
+These instructions are deliberately very basic. If you want something clever,
+go read the real docs ;-) Please don't add more stuff, but feel free to
+correct my mistakes ;-) (mbligh@aracnet.com)
+Thanks to John Levon, Dave Hansen, et al. for help writing this.
+
+<test> is the thing you're trying to measure.
+Make sure you have the correct System.map / vmlinux referenced!
+IMHO it's easier to use "make install" for linux and hack /sbin/installkernel
+to copy config files, system.map, vmlinux to /boot.
+
+Readprofile
+-----------
+You need a fixed readprofile command for 2.5 ... either get hold of
+a current version from:
+http://www.kernel.org/pub/linux/utils/util-linux/
+or get readprofile binary fixed for 2.5 / akpm's 2.5 patch from
+ftp://ftp.kernel.org/pub/linux/kernel/people/mbligh/tools/readprofile/
+
+Add "profile=2" to the kernel command line.
+
+clear readprofile -r
+ <test>
+dump output readprofile -m /boot/System.map > captured_profile
+
+Oprofile
+--------
+get source (I use 0.5) from http://oprofile.sourceforge.net/
+add "idle=poll" to the kernel command line
+Configure with CONFIG_PROFILING=y and CONFIG_OPROFILE=y & reboot on new kernel
+./configure --with-kernel-support
+make install
+
+One time setup (pick appropriate one for your CPU):
+P3 opcontrol --setup --vmlinux=/boot/vmlinux \
+ --ctr0-event=CPU_CLK_UNHALTED --ctr0-count=100000
+Athlon/x86-64 opcontrol --setup --vmlinux=/boot/vmlinux \
+ --ctr0-event=RETIRED_INSNS --ctr0-count=100000
+P4 opcontrol --setup --vmlinux=/boot/vmlinux \
+ --ctr0-event=GLOBAL_POWER_EVENTS \
+ --ctr0-unit-mask=1 --ctr0-count=100000
+
+start daemon opcontrol --start-daemon
+clear opcontrol --reset
+start opcontrol --start
+ <test>
+stop opcontrol --stop
+dump output oprofpp -dl -i /boot/vmlinux > output_file
+
^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH] 5/6 Provide basic documentation for profiling
@ 2003-03-07 23:36 Martin J. Bligh
0 siblings, 0 replies; 2+ messages in thread
From: Martin J. Bligh @ 2003-03-07 23:36 UTC (permalink / raw)
To: Linus Torvalds; +Cc: linux-kernel
People keep asking for this info, and Andrew asked me to put it under the
Documentation directory ... provides really simple instructions for taking
a profile so that users can report performance changes in a useful way.
diff -urpN -X /home/fletch/.diff.exclude 015-numaq_zholes_warning/Documentation/basic_profiling.txt 020-prof_docs/Documentation/basic_profiling.txt
--- 015-numaq_zholes_warning/Documentation/basic_profiling.txt Wed Dec 31 16:00:00 1969
+++ 020-prof_docs/Documentation/basic_profiling.txt Wed Mar 5 07:48:44 2003
@@ -0,0 +1,48 @@
+These instructions are deliberately very basic. If you want something clever,
+go read the real docs ;-) Please don't add more stuff, but feel free to
+correct my mistakes ;-) (mbligh@aracnet.com)
+Thanks to John Levon, Dave Hansen, et al. for help writing this.
+
+<test> is the thing you're trying to measure.
+Make sure you have the correct System.map / vmlinux referenced!
+IMHO it's easier to use "make install" for linux and hack /sbin/installkernel
+to copy config files, system.map, vmlinux to /boot.
+
+Readprofile
+-----------
+You need a fixed readprofile command for 2.5 ... either get hold of
+a current version from:
+http://www.kernel.org/pub/linux/utils/util-linux/
+or get readprofile binary fixed for 2.5 / akpm's 2.5 patch from
+ftp://ftp.kernel.org/pub/linux/kernel/people/mbligh/tools/readprofile/
+
+Add "profile=2" to the kernel command line.
+
+clear readprofile -r
+ <test>
+dump output readprofile -m /boot/System.map > captured_profile
+
+Oprofile
+--------
+get source (I use 0.5) from http://oprofile.sourceforge.net/
+add "idle=poll" to the kernel command line
+Configure with CONFIG_PROFILING=y and CONFIG_OPROFILE=y & reboot on new kernel
+./configure --with-kernel-support
+make install
+
+One time setup (pick appropriate one for your CPU):
+P3 opcontrol --setup --vmlinux=/boot/vmlinux \
+ --ctr0-event=CPU_CLK_UNHALTED --ctr0-count=100000
+Athlon/x86-64 opcontrol --setup --vmlinux=/boot/vmlinux \
+ --ctr0-event=RETIRED_INSNS --ctr0-count=100000
+P4 opcontrol --setup --vmlinux=/boot/vmlinux \
+ --ctr0-event=GLOBAL_POWER_EVENTS \
+ --ctr0-unit-mask=1 --ctr0-count=100000
+
+start daemon opcontrol --start-daemon
+clear opcontrol --reset
+start opcontrol --start
+ <test>
+stop opcontrol --stop
+dump output oprofpp -dl -i /boot/vmlinux > output_file
+
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2003-03-07 23:37 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
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2003-03-07 23:36 [PATCH] 5/6 Provide basic documentation for profiling Martin J. Bligh
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2003-03-05 17:23 [PATCH] 1/6 Share common physnode_map code between NUMA-Q and Summit Martin J. Bligh
2003-03-05 17:24 ` [PATCH] 2/6 Make CONFIG_NUMA work on non-numa machines Martin J. Bligh
2003-03-05 17:24 ` [PATCH] 3/6 Convert physnode_map to u8 Martin J. Bligh
2003-03-05 17:25 ` [PATCH] 4/6 Fix the type of get_zholes_size for NUMA-Q Martin J. Bligh
2003-03-05 17:26 ` [PATCH] 5/6 Provide basic documentation for profiling Martin J. Bligh
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