X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=ltt%2Fbranches%2Fpoly%2FQUICKSTART;h=e3c77cf31463c7e0cbc38accf337ba39b148d4e7;hb=e8e288b8732763b5ea4bc2f2271d9aafdaf367fd;hp=fc2371eae53a41ba38c72935cfc891e5c41c9902;hpb=7bfce92a75c80f66e108e09bc58546ba546e45e4;p=lttv.git diff --git a/ltt/branches/poly/QUICKSTART b/ltt/branches/poly/QUICKSTART index fc2371ea..e3c77cf3 100644 --- a/ltt/branches/poly/QUICKSTART +++ b/ltt/branches/poly/QUICKSTART @@ -3,12 +3,36 @@ QUICKSTART How to use LTTng and LTTV in a few lines : -These operations are made for installing LTTng 0.2 on a linux 2.6.12-rc2-mm2 +This document is made of four parts : The first one explains how to install +LTTng and LTTV from Debian and RPM binary packages, the second one explains how +to install LTTng and LTTV from sources and the third one describes the steps +to follow to trace a system and view it. The fourth and last part explains +briefly how to add a new trace point to the kernel. + +What you will typically want is to read sections 1 and 3 : install LTTng from +binary packages and use it. If there are no packages ready for your system, you +will have to install from sources (section 2) instead. + +These operations are made for installing LTTng 0.3 on a linux 2.6.12-rc2-mm2 kernel. Change the versions to fit your needs. Author : Mathieu Desnoyers, September 2005 + +*********************************************************** +** Section 1 * Installation from Debian or RPM packages ** +*********************************************************** + +No Debian or RPM packages are ready yet. + +TODO + + +*********************************************************** +** Section 2 * Installation from sources ** +*********************************************************** + * Getting the LTTng packages su - @@ -16,7 +40,7 @@ mkdir /usr/src/lttng cd /usr/src/lttng (see http://ltt.polymtl.ca/lttng for package listing) wget http://ltt.polymtl.ca/lttng/lttng-modules-0.2.tar.bz2 -wget http://ltt.polymtl.ca/lttng/patch-2.6.12-rc4-mm2-lttng-0.2.bz2 +wget http://ltt.polymtl.ca/lttng/patch-2.6.12-rc4-mm2-lttng-0.3.bz2 bzip2 -cd lttng-modules-0.2.tar.bz2 | tar xvof - @@ -29,15 +53,15 @@ wget http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.12-rc4/2.6.1 bzip2 -cd linux-2.6.12-rc4.tar.bz2 | tar xvof - cd linux-2.6.12-rc4 bzip2 -cd ../2.6.12-rc4-mm2.bz2 | patch -p1 -bzip2 -cd /usr/src/lttng/patch-2.6.12-rc4-mm2-lttng-0.2.bz2 | patch -p1 +bzip2 -cd /usr/src/lttng/patch-2.6.12-rc4-mm2-lttng-0.3.bz2 | patch -p1 cd .. -mv linux-2.6.12-rc4 linux-2.6.12-rc4-mm2-lttng-0.2 +mv linux-2.6.12-rc4 linux-2.6.12-rc4-mm2-lttng-0.3 * Installing a LTTng kernel su - -cd /usr/src/linux-2.6.12-rc4-mm2-lttng-0.2 +cd /usr/src/linux-2.6.12-rc4-mm2-lttng-0.3 make menuconfig General setup * Linux Trace Toolkit Instrumentation Support @@ -46,7 +70,18 @@ make menuconfig Align Linux Trace Toolkit Traces Activate Linux Trace Toolkit Heartbeat Timer IMPORTANT : This is enabled by default : you must disable it! +make make install +make modules_install + +The first time you use relayfs, you have to specify a mount point in you system: +mkdir /mnt/relayfs +echo "relayfs /mnt/relayfs relayfs rw 0 0" \ + >> /etc/fstab + +Depending on your boot loader, you may want to execute : +update-grub or lilo + reboot @@ -54,8 +89,8 @@ reboot su - cd /usr/src/lttng/lttng-modules-0.2 -KERNELDIR=/usr/src/linux-2.6.12-rc4-mm2-lttng-0.2 make -KERNELDIR=/usr/src/linux-2.6.12-rc4-mm2-lttng-0.2 make modules_install +KERNELDIR=/usr/src/linux-2.6.12-rc4-mm2-lttng-0.3 make +KERNELDIR=/usr/src/linux-2.6.12-rc4-mm2-lttng-0.3 make modules_install note : at this stage, you might want to execute modprobe ltt-control @@ -68,23 +103,65 @@ echo ltt-control >> /etc/modules su - cd /usr/src -wget http://ltt.polymtl.ca/packages/LinuxTraceToolkitViewer-0.5-16092005.tar.gz -gzip -cd LinuxTraceToolkitViewer-0.5-16092005.tar.gz | tar xvof - -cd LinuxTraceToolkitViewer-0.5-16092005 +wget http://ltt.polymtl.ca/packages/LinuxTraceToolkitViewer-0.6.2-20092005.tar.gz +gzip -cd LinuxTraceToolkitViewer-0.6.2-20092005.tar.gz | tar xvof - +cd LinuxTraceToolkitViewer-0.6.2-20092005 +(refer to README to see the development libraries that must be installed on you +system) ./configure make make install -* Use LTTV + + + +*********************************************************** +** Section 3 * Using LTTng and LTTV ** +*********************************************************** + +* Use graphical LTTV to control tracing and analyse traces lttv-gui (or /usr/local/bin/lttv-gui) - - Spot the "Trace Control" icon : click on it + - Spot the "Tracing Control" icon : click on it + (it's a traffic light icon) - enter the root password - click "start" - click "stop" - Yes * You should now see a trace +* Use text mode LTTng to control tracing + +The tracing can be controlled from a terminal by using the lttctl command. + +Start tracing : + +lttctl -n trace -d -l /mnt/relayfs/ltt -t /tmp/trace1 + +Stop tracing and destroy trace channels : + +lttctl -n trace -R + +see lttctl --help for details. + + +* Use text mode LTTV + +Fell free to look in /usr/local/lib/lttv/plugins to see all the text and +graphical plugins available. + +For example, a simple trace dump in text format is available with : + +lttv -m textDump -t /tmp/trace + +see lttv -m textDump --help for detailed command line options of textDump. + + + + +*********************************************************** +** Section 4 * Adding new instrumentations with genevent ** +*********************************************************** * Getting and installing genevent @@ -106,14 +183,14 @@ cp process.xml yourfacility.xml cd /tmp /usr/local/bin/genevent /usr/local/share/LinuxTraceToolkitViewer/yourfacility.xml cp ltt-facility-yourfacility.h ltt-facility-id-yourfacility.h \ - /usr/src/linux-2.6.12-rc4-mm2-lttng-0.2/include/linux/ltt + /usr/src/linux-2.6.12-rc4-mm2-lttng-0.3/include/linux/ltt cp ltt-facility-loader-yourfacility.c ltt-facility-loader-yourfacility.h \ - /usr/src/linux-2.6.12-rc4-mm2-lttng-0.2/ltt + /usr/src/linux-2.6.12-rc4-mm2-lttng-0.3/ltt * edit the kernel file you want to instrument - Add #include at the beginning of the file. - Add a call to the tracing functions. See their names and parameters in - /usr/src/linux-2.6.12-rc4-mm2-lttng-0.2/include/linux/ltt/ltt-facility-yourfacility.h + /usr/src/linux-2.6.12-rc4-mm2-lttng-0.3/include/linux/ltt/ltt-facility-yourfacility.h