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Oprofile Tutorial

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There has been a lot of reworking of the arm oprofile support to use the perf infrastructure: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=history;f=arch/arm/oprofile;hb=HEAD The 2.6.35 kernel uses the perf infrastructure: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=arch/arm/oprofile/common.c;h=c074e66ad224e83d18d1f278afc78aa00e18b494;hb=0f43dd546d991ca260d8a72d07f617907c508de8 Is CONFIG_HW_PERF_EVENTS set in the For example, the operf tool from the official 0.9.8 release is completely broken when used on SLES 11 SP1, where the following error message occurs: Unexpected error running operf: Permission denied For legacy OProfile (i.e., opcontrol-based profiling), use opcontrol --reset, or you can save the session under a name with opcontrol --save . Reply With Quote Quick Navigation C++ (Non Visual C++ Issues) Top Site Areas Settings Private Messages Subscriptions Who's Online Search Forums Forums Home Forums Visual C++ & C++ Programming Visual C++

[email protected]:/lib/modules/2.6.30.10# opreport -l warning: /ath_dal could not be found. But I cannot find documented exactly what file in the linux kernel tree to copy from nor what objcopy options to use. The distro-supplied aclocal includes a dirlist file, which tells aclocal of locations to look for m4 files (such as the pkg.m4 file). This feature was initially included with the 2.6.31 kernel, but over the next several versions, it evolved rapidly to fix bugs and add new capabilities.

Oprofile Tutorial

Have you already used --vmlinux=3D feature with RHEL4U4 yourself? Alternatively, you can re-compile Red Hat's kernel with sys_call_table added. In order for post-processing tools to show symbol info for kernel modules, you must pass the --image-path option; for example, opreport --symbols /lib/modules/`uname -r`. Then, for one reason or another, you install another version of aclocal via a local build/install.

Best Regards Cyrille ------------------------------------------------------------------------ - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. Reserve current vmlinuz kernel. If you do 'make bzImage', the original is still preserved - after compilation is done you should have 'vmlinux' in the same directory you did the make from (/usr/src/linux) - in Operf Tutorial I saw in /usr/src/redhat/RPMS/i686/ that I not only had the kernel rpm I had installed ( kernel-smp-2.6.9-43.EL ), but it holds several rpm files [[email protected]

warning: /umac could not be found. You seem to have CSS turned off. A rude security guard Make an interweaving quine How to align a set of very long equations How could Talia Winters help the rogue telepaths against Bester? There's a day I won't get back...

I think if I recompile a Linux kernel to generate a vmlinux (without make install), but in my real Linux environment, the /boot/vmlinuz is the kernel image I actally used, will Oprofile Ubuntu If you do 'make bzImage', the original is still preserved - after compilation is done you should have 'vmlinux' in the same directory you did the make from (/usr/src/linux) - in Documentation that says "yum install binutils-devel" is not really very helpful on embedded systems where we build everything from source. > > Thanks for the vmlinux tips. Please don't fill out this field.

Error: No Sample Files Found: Profile Specification Too Strict ?

For other possible causes for this error message, read What to do when you don't get any results. Here are some differences. > dd if=/boot/vmlinuz-2.6.9-11.EL bs=1 skip=13844 | zcat > vmlinux > 1421660+0 records in > 1421660+0 records out You can see I have no information dumped as yours, Oprofile Tutorial To get just the image search for the GZ signature - 1f 8b 08 00. Install Oprofile You can copy unstripped modules from staging_dir/target-*/root/lib/modules/*/ comment:3 Changed 6 years ago by Gus Wirth Resolution worksforme deleted Status changed from closed to reopened The kernels are the same: [[email protected]

Alternatively, you can re-compile Red Hat's kernel with sys_call_table added. It is going to depend a lot on which kernel is being used and how the kernel build was configured. WEATHER-resistant GFCI's required in bathrooms? If using operf, all kernel samples are automatically attributed to a "no-vmlinux" pseudo-symbol, unless the --vmlinux option is used. No-vmlinux

Documentation that says "yum install binutils-devel" is not really very helpful on embedded systems where we build everything from source. It is usually placed in the top level directory: name "vmlinux" where you did the make to build the linux kernel. Browse other questions tagged linux-kernel oprofile or ask your own question. Unless you specify differently with the '--prefix' option, this other version of aclocal will be installed at /usr/local/bin/aclocal, which typically will be found in your PATH ahead of the /usr/bin/aclocal.

Browse other questions tagged linux-kernel oprofile or ask your own question. Opreport That is critical for my application tuning that I understand where it spends time in the kernel so please hele me achieving this. If you use this version you must use the OProfile userspace RPM from Red Hat 8.0, not any version from this site. " After having read that, I am wondering whether

Regards Cyrille -----Original Message----- From: Apparao, Padmashree K [mailto:[email protected]]=20 Sent: Saturday, May 05, 2007 4:06 PM To: Maucci, Cyrille Subject: RE: Profiling the kernel: getting a working vmlinux Hi, The vmlinux

After all, the config file should be identical to the one in /proc/config.gz. You seem to have CSS turned off. To get just the image search for the GZ signature - 1f 8b 08 00. Oprofile Operf I was able to build an oprofile package using the latest code checked out from CVS on 2010-08-30, which includes some fixes for 24K cores.

samples % app name symbol name 26 45.6140 ath_hal.ko ar9300PAPRDThermalSend 4 7.0175 ld-2.11.so check_match.8571 3 5.2632 ld-2.11.so do_lookup_x 2 3.5088 busybox readtoken1 2 3.5088 ld-2.11.so _dl_relocate_object 2 3.5088 libc-2.11.so strcmp 2 However, there is a linux-2.6.32.16 directory under the linux-ar71xx-generic directory which contains an unstripped vmlinux kernel. Here's the appropriate part of the ".config" file: # # Kernel build options # CONFIG_KERNEL_DEBUG_FS=y CONFIG_KERNEL_PROFILING=y CONFIG_KERNEL_KALLSYMS=y # CONFIG_KERNEL_DEBUG_KERNEL is not set # CONFIG_KERNEL_DEBUG_INFO is not set And here's what happens I have downloaded a new 2.6.9 kernel from kernel.org, and find in its Makefile that .config is referred.

Any one has ideas? http://sourceforge.net/powerbar/db2/ _______________________________________________ oprofile-list mailing list [email protected] Copyright Quinstreet Inc. 2002-2016 vmlinux not vmlinuz) I've read online that one must use objcopy to produce the file. (Since this is a cross compile I'm using the cross-objcopy).

Now i'm sure there are scripts for it somewhere, but you can do it old-fashioned way - in my case: > od -A d -t x1 vmlinuz | grep '1f 8b Really? Thanks a lot Regards Cyrille -----Original Message----- From: Maucci, Cyrille=20 Sent: Monday, May 07, 2007 12:08 AM To: Apparao, Padmashree K Cc: Maucci, Cyrille Subject: RE: Profiling the kernel: getting a How do I reset the profiling data ?

Enabled Oprofile in kernel config Copied vmlinux to /home of file system After booting the board, started Oprofile using following commands. comment:8 Changed 5 years ago by Kyle what the bug tracker?is it this? # # Kernel hacking # CONFIG_TRACE_IRQFLAGS_SUPPORT=y # CONFIG_PRINTK_TIME is not set CONFIG_ENABLE_WARN_DEPRECATED=y CONFIG_ENABLE_MUST_CHECK=y CONFIG_FRAME_WARN=2048 CONFIG_MAGIC_SYSRQ=y # CONFIG_UNUSED_SYMBOLS MEC1:~ # opcontrol --vmlinux=/boot/1-vmlinux MEC1:~ # opcontrol --start The specified file /boot/1-vmlinux does not seem to be valid Make sure you are using the non-compressed image file (e.g.