I don't know why it's not created. What kernel version is this? Did you build the kernel or is it from someone else who could have modified it? The only failure that I see in profile setup/init is Out of Memory if the profile buffer cannot be allocated. Did you search thru the boot message log for any errors? ~Randy On Tue, 08 Apr 2003 19:42:03 +0000 "shesha bhushan" <bhushan_vadulas@hotmail.com> wrote: | | Hi | If I use the command line option "profile=2" while booting the system, why | /proc/profile file is not created? Should I have to create it manually? | | Thanking You' | Shesha | | | | | | >From: "Randy.Dunlap" <rddunlap@osdl.org> | >To: "shesha bhushan" <bhushan_vadulas@hotmail.com> | >CC: linux-kernel@vger.kernel.org, kernelnewbies@nl.linux.org | >Subject: Re: KERNEL PROFILING | >Date: Tue, 8 Apr 2003 08:01:55 -0700 | > | >On Tue, 08 Apr 2003 07:58:54 +0000 "shesha bhushan" | ><bhushan_vadulas@hotmail.com> wrote: | > | >| HI ALL, | >| I am trying to profile the linux kernel. Can any one suggest an easy | >way | >| to do. Like, I wanted to see how much TCP is using CPU, how much of CPU | >is | >| used in memcpy, etc. | >| Can any one please suggest me. | > | >Start with the file linux/Documentation/basic_profiling.txt | >(it's in Linux 2.5.66-or-so or later). | > | >It explains how to use oprofile and readprofile. | > | >You can read about oprofile at http://oprofile.sourceforge.net/ . | > | >You can read about basic in-kernel profiling using /proc/profile | >and readprofile via 'man readprofile'. It's simple to use. | > | >-- | >~Randy -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
