2 * resource_track.c --- resource tracking
4 * Copyright (C) 2013 by Theodore Ts'o
7 * This file may be redistributed under the terms of the GNU Public
14 #include "resize2fs.h"
19 #include <sys/resource.h>
21 void init_resource_track(struct resource_track *track, const char *desc,
27 io_stats io_start = 0;
30 track->brk_start = sbrk(0);
31 gettimeofday(&track->time_start, 0);
34 memset(&r, 0, sizeof(struct rusage));
36 getrusage(RUSAGE_SELF, &r);
37 track->user_start = r.ru_utime;
38 track->system_start = r.ru_stime;
40 track->user_start.tv_sec = track->user_start.tv_usec = 0;
41 track->system_start.tv_sec = track->system_start.tv_usec = 0;
43 track->bytes_read = 0;
44 track->bytes_written = 0;
45 if (channel && channel->manager && channel->manager->get_stats)
46 channel->manager->get_stats(channel, &io_start);
48 track->bytes_read = io_start->bytes_read;
49 track->bytes_written = io_start->bytes_written;
53 static float timeval_subtract(struct timeval *tv1,
56 return ((tv1->tv_sec - tv2->tv_sec) +
57 ((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000);
60 void print_resource_track(ext2_resize_t rfs, struct resource_track *track,
67 struct mallinfo malloc_info;
69 struct timeval time_end;
71 if ((rfs->flags & RESIZE_DEBUG_RTRACK) == 0)
74 gettimeofday(&time_end, 0);
77 printf("%s: ", track->desc);
80 #define kbytes(x) (((unsigned long)(x) + 1023) / 1024)
82 malloc_info = mallinfo();
83 printf("Memory used: %luk/%luk (%luk/%luk), ",
84 kbytes(malloc_info.arena), kbytes(malloc_info.hblkhd),
85 kbytes(malloc_info.uordblks), kbytes(malloc_info.fordblks));
87 printf("Memory used: %lu, ",
88 (unsigned long) (((char *) sbrk(0)) -
89 ((char *) track->brk_start)));
92 getrusage(RUSAGE_SELF, &r);
94 printf("time: %5.2f/%5.2f/%5.2f\n",
95 timeval_subtract(&time_end, &track->time_start),
96 timeval_subtract(&r.ru_utime, &track->user_start),
97 timeval_subtract(&r.ru_stime, &track->system_start));
99 printf("elapsed time: %6.3f\n",
100 timeval_subtract(&time_end, &track->time_start));
102 #define mbytes(x) (((x) + 1048575) / 1048576)
103 if (channel && channel->manager && channel->manager->get_stats) {
105 unsigned long long bytes_read = 0;
106 unsigned long long bytes_written = 0;
108 channel->manager->get_stats(channel, &delta);
110 bytes_read = delta->bytes_read - track->bytes_read;
111 bytes_written = delta->bytes_written -
112 track->bytes_written;
113 if (bytes_read == 0 && bytes_written == 0)
116 printf("%s: ", track->desc);
117 printf("I/O read: %lluMB, write: %lluMB, "
120 mbytes(bytes_written),
121 (double)mbytes(bytes_read + bytes_written) /
122 timeval_subtract(&time_end, &track->time_start));