diff options
Diffstat (limited to 'e2fsck/iscan.c')
| -rw-r--r-- | e2fsck/iscan.c | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/e2fsck/iscan.c b/e2fsck/iscan.c new file mode 100644 index 0000000..33c6a4c --- /dev/null +++ b/e2fsck/iscan.c @@ -0,0 +1,265 @@ +/* + * Test to see how quickly we can scan the inode table (not doing + * anything else) + */ + +#include "config.h" +#include <string.h> +#include <fcntl.h> +#include <ctype.h> +#include <termios.h> +#include <time.h> +#ifdef HAVE_GETOPT_H +#include <getopt.h> +#endif +#include <unistd.h> +#ifdef HAVE_ERRNO_H +#include <errno.h> +#endif +#include <sys/ioctl.h> +#ifdef HAVE_MALLOC_H +#include <malloc.h> +#endif +#include <sys/time.h> +#include <sys/resource.h> + +#if EXT2_FLAT_INCLUDES +#include "ext2_fs.h" +#include "ext2fs.h" +#include "blkid.h" +#else +#include "ext2fs/ext2_fs.h" +#include "ext2fs/ext2fs.h" +#include "blkid/blkid.h" +#endif + +#include "et/com_err.h" +#include "../version.h" + +struct resource_track { + struct timeval time_start; + struct timeval user_start; + struct timeval system_start; + void *brk_start; + unsigned long long bytes_read; + unsigned long long bytes_written; +}; + +extern int isatty(int); + +const char * program_name = "iscan"; +const char * device_name = NULL; + +int yflag = 0; +int nflag = 0; +int preen = 0; +int inode_buffer_blocks = 0; +int invalid_bitmaps = 0; + +struct resource_track global_rtrack; + +void init_resource_track(struct resource_track *track, io_channel channel) +{ +#ifdef HAVE_GETRUSAGE + struct rusage r; +#endif + io_stats io_start = 0; + + track->brk_start = sbrk(0); + gettimeofday(&track->time_start, 0); +#ifdef HAVE_GETRUSAGE +#ifdef sun + memset(&r, 0, sizeof(struct rusage)); +#endif + getrusage(RUSAGE_SELF, &r); + track->user_start = r.ru_utime; + track->system_start = r.ru_stime; +#else + track->user_start.tv_sec = track->user_start.tv_usec = 0; + track->system_start.tv_sec = track->system_start.tv_usec = 0; +#endif + track->bytes_read = 0; + track->bytes_written = 0; + if (channel && channel->manager && channel->manager->get_stats) + channel->manager->get_stats(channel, &io_start); + if (io_start) { + track->bytes_read = io_start->bytes_read; + track->bytes_written = io_start->bytes_written; + } +} + +static float timeval_subtract(struct timeval *tv1, + struct timeval *tv2) +{ + return ((tv1->tv_sec - tv2->tv_sec) + + ((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000); +} + +void print_resource_track(const char *desc, + struct resource_track *track, io_channel channel) +{ +#ifdef HAVE_GETRUSAGE + struct rusage r; +#endif + struct timeval time_end; + + gettimeofday(&time_end, 0); + + if (desc) + printf("%s: ", desc); + +#define kbytes(x) (((unsigned long long)(x) + 1023) / 1024) +#ifdef HAVE_MALLINFO2 + if (1) { + struct mallinfo2 malloc_info = mallinfo2(); + + printf("Memory used: %lluk/%lluk (%lluk/%lluk), ", + kbytes(malloc_info.arena), kbytes(malloc_info.hblkhd), + kbytes(malloc_info.uordblks), + kbytes(malloc_info.fordblks)); + } else +#elif defined HAVE_MALLINFO + /* don't use mallinfo() if over 2GB used, since it returns "int" */ + if ((char *)sbrk(0) - (char *)track->brk_start < 2LL << 30) { + struct mallinfo malloc_info = mallinfo(); + + printf("Memory used: %lluk/%lluk (%lluk/%lluk), ", + kbytes(malloc_info.arena), kbytes(malloc_info.hblkhd), + kbytes(malloc_info.uordblks), + kbytes(malloc_info.fordblks)); + } else +#endif + printf("Memory used: %lluk, ", + kbytes(((char *)sbrk(0)) - ((char *)track->brk_start))); + +#ifdef HAVE_GETRUSAGE + getrusage(RUSAGE_SELF, &r); + + printf("time: %5.2f/%5.2f/%5.2f\n", + timeval_subtract(&time_end, &track->time_start), + timeval_subtract(&r.ru_utime, &track->user_start), + timeval_subtract(&r.ru_stime, &track->system_start)); +#else + printf("elapsed time: %6.3f\n", + timeval_subtract(&time_end, &track->time_start)); +#endif +#define mbytes(x) (((x) + 1048575) / 1048576) + if (channel && channel->manager && channel->manager->get_stats) { + io_stats delta = 0; + unsigned long long bytes_read = 0; + unsigned long long bytes_written = 0; + + if (desc) + printf("%s: ", desc); + + channel->manager->get_stats(channel, &delta); + if (delta) { + bytes_read = delta->bytes_read - track->bytes_read; + bytes_written = delta->bytes_written - + track->bytes_written; + } + printf("I/O read: %lluMB, write: %lluMB, " + "rate: %.2fMB/s\n", + mbytes(bytes_read), mbytes(bytes_written), + (double)mbytes(bytes_read + bytes_written) / + timeval_subtract(&time_end, &track->time_start)); + } +} + +static void usage(void) +{ + fprintf(stderr, + "Usage: %s [-F] [-I inode_buffer_blocks] device\n", + program_name); + exit(1); +} + +static void PRS(int argc, char *argv[]) +{ + int flush = 0; + int c; +#ifdef MTRACE + extern void *mallwatch; +#endif + errcode_t retval; + + setbuf(stdout, NULL); + setbuf(stderr, NULL); + initialize_ext2_error_table(); + + if (argc && *argv) + program_name = *argv; + while ((c = getopt (argc, argv, "FI")) != EOF) + switch (c) { + case 'F': + flush = 1; + break; + case 'I': + inode_buffer_blocks = atoi(optarg); + break; + default: + usage (); + } + device_name = argv[optind]; + if (flush) { + int fd = open(device_name, O_RDONLY, 0); + + if (fd < 0) { + com_err("open", errno, + "while opening %s for flushing", device_name); + exit(1); + } + if ((retval = ext2fs_sync_device(fd, 1))) { + com_err("ext2fs_sync_device", retval, + "while trying to flush %s", device_name); + exit(1); + } + close(fd); + } +} + +int main (int argc, char *argv[]) +{ + errcode_t retval = 0; + int exit_value = 0; + ext2_filsys fs; + ext2_ino_t ino; + __u32 num_inodes = 0; + struct ext2_inode inode; + ext2_inode_scan scan; + + PRS(argc, argv); + + retval = ext2fs_open(device_name, 0, + 0, 0, unix_io_manager, &fs); + if (retval) { + com_err(program_name, retval, "while trying to open '%s'", + device_name); + exit(1); + } + + init_resource_track(&global_rtrack, fs->io); + + retval = ext2fs_open_inode_scan(fs, inode_buffer_blocks, &scan); + if (retval) { + com_err(program_name, retval, "while opening inode scan"); + exit(1); + } + + while (1) { + retval = ext2fs_get_next_inode(scan, &ino, &inode); + if (retval) { + com_err(program_name, retval, + "while getting next inode"); + exit(1); + } + if (ino == 0) + break; + num_inodes++; + } + + print_resource_track(NULL, &global_rtrack, fs->io); + printf("%u inodes scanned.\n", num_inodes); + + exit(0); +} |