59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
|
/* 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);
|
||
|
|
grub_printf ("Disk cache: hits = %lu, misses = %lu ", hits, misses);
|
||
|
|
if (hits + misses)
|
||
|
|
{
|
||
|
|
unsigned long ratio = hits * 10000 / (hits + misses);
|
||
|
|
grub_printf ("(%lu.%lu%%)\n", ratio / 100, ratio % 100);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
grub_printf ("(N/A)\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);
|
||
|
|
}
|