READPROFILE(8) readprofile - readprofile [] 2.0 . readprofile /proc/profile . : , ,,C" , ,," , . . This utility is a diagnostic tool and is not designed or intended for use in security-sensitive contexts (e.g., setuid, setgid, sudo, or similar privilege-elevation scenarios). It is installed without any special permissions. -a, --all . . -b, --histbin . -i, --info . readprofile . ( make config), . -t () -i, . -m, --mapfile - Specify a mapfile, which by default is /boot/System.map. You should specify the map file on cmdline if your current kernel isn't the last one you compiled, or if you keep System.map elsewhere. If the name of the map file ends with .gz it is decompressed on the fly. -n, --no-auto Disable automatic byte order detection. -M, --multiplier . , , HZ. 2.6.16 . . -p, --profile - , /proc/profile. ,," . /proc/profile cat(1) cp(1). , readprofile-1.1, . -r, --reset Reset the profiling buffer. This can only be invoked by root, because /proc/profile is readable by everybody but writable only by the superuser. -s, --counters . -v, --verbose . . RAM , , , . -h, --help . -V, --version . /proc/profile . /usr/src/linux/System.map . /usr/src/linux/* readprofile 1.3.x , /proc/profile 1.2 1.3. ELF . ,,a.out" , ,,a.out" . , , . , profil=2 ( ) . . . . . : readprofile | sort -nr | less 20 : readprofile | sort -nr +2 | head -20 : readprofile | grep _ext2 , : readprofile -av | less ,," : readprofile -p ~/profile.freeze -m /zImage.map.gz 2kHz , : readprofile -M 20 , ,,https://github.com/util-linux/util-linux/issues[issue tracker]". readprofile ,,util-linux" . util-linux 2.42.3 2026-09-02 READPROFILE(8)