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/* testspeed.c - Command to test file read speed */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2012 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/mm.h>
#include <grub/file.h>
#include <grub/time.h>
#include <grub/misc.h>
#include <grub/dl.h>
#include <grub/extcmd.h>
#include <grub/i18n.h>
#include <grub/normal.h>
GRUB_MOD_LICENSE ("GPLv3+");
#define DEFAULT_BLOCK_SIZE 65536
static const struct grub_arg_option options[] =
{
{"size", 's', 0, N_("Specify size for each read operation"), 0, ARG_TYPE_INT},
{0, 0, 0, 0, 0, 0}
};
static grub_err_t
grub_cmd_testspeed (grub_extcmd_context_t ctxt, int argc, char **args)
{
struct grub_arg_list *state = ctxt->state;
grub_uint64_t start;
grub_uint64_t end;
grub_ssize_t block_size;
grub_disk_addr_t total_size;
char *buffer;
grub_file_t file;
grub_uint64_t whole, fraction;
if (argc == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
block_size = (state[0].set) ?
grub_strtoul (state[0].arg, 0, 0) : DEFAULT_BLOCK_SIZE;
if (block_size <= 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("invalid block size"));
buffer = grub_malloc (block_size);
if (buffer == NULL)
return grub_errno;
file = grub_file_open (args[0], GRUB_FILE_TYPE_TESTLOAD);
if (file == NULL)
goto quit;
total_size = 0;
start = grub_get_time_ms ();
while (1)
{
grub_ssize_t size = grub_file_read (file, buffer, block_size);
if (size <= 0)
break;
total_size += size;
}
end = grub_get_time_ms ();
grub_file_close (file);
grub_printf_ (N_("File size: %s\n"),
grub_get_human_size (total_size, GRUB_HUMAN_SIZE_NORMAL));
whole = grub_divmod64 (end - start, 1000, &fraction);
grub_printf_ (N_("Elapsed time: %d.%03d s \n"),
(unsigned) whole,
(unsigned) fraction);
if (end != start)
{
grub_uint64_t speed =
grub_divmod64 (total_size * 100ULL * 1000ULL, end - start, 0);
grub_printf_ (N_("Speed: %s \n"),
grub_get_human_size (speed,
GRUB_HUMAN_SIZE_SPEED));
}
quit:
grub_free (buffer);
return grub_errno;
}
static grub_extcmd_t cmd;
GRUB_MOD_INIT(testspeed)
{
cmd = grub_register_extcmd ("testspeed", grub_cmd_testspeed, 0, N_("[-s SIZE] FILENAME"),
N_("Test file read speed."),
options);
}
GRUB_MOD_FINI(testspeed)
{
grub_unregister_extcmd (cmd);
}
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