/* cacheinfo.c - disk cache statistics */ /* * GRUB -- GRand Unified Bootloader * Copyright (C) 2008,2010 Free Software Foundation, Inc. * * GRUB is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * GRUB is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GRUB. If not, see <http://www.gnu.org/licenses/>. */ #include <grub/dl.h> #include <grub/misc.h> #include <grub/command.h> #include <grub/i18n.h> #include <grub/disk.h> static grub_err_t grub_rescue_cmd_info (struct grub_command *cmd __attribute__ ((unused)), int argc __attribute__ ((unused)), char *argv[] __attribute__ ((unused))) { unsigned long hits, misses; grub_disk_cache_get_performance (&hits, &misses); if (hits + misses) { unsigned long ratio = hits * 10000 / (hits + misses); grub_printf ("(%lu.%lu%%)\n", ratio / 100, ratio % 100); grub_printf_ (N_("Disk cache statistics: hits = %lu (%lu.%02lu%%)," " misses = %lu\n"), ratio / 100, ratio % 100, hits, misses); } else grub_printf ("%s\n", _("No disk cache statistics available\n")); return 0; } static grub_command_t cmd_cacheinfo; GRUB_MOD_INIT(cacheinfo) { cmd_cacheinfo = grub_register_command ("cacheinfo", grub_rescue_cmd_info, 0, N_("Get disk cache info.")); } GRUB_MOD_FINI(cacheinfo) { grub_unregister_command (cmd_cacheinfo); }