Commit | Line | Data |
---|---|---|
6f921167 WD |
1 | This patch adds a --slow-down=USECs option that causes the sender to scan |
2 | the filelist more slowly, and the generator to scan for deletions more | |
3 | slowly. It doesn't do anything to make anyone slow down during the normal | |
4 | transfer processing, though. | |
5 | ||
6 | The idea is to lessen rsync's impact on disk I/O. Unfortunately, there | |
7 | should really be a way to affect more of rsync's processing, perhaps by | |
8 | specifying a maximum disk I/O rate (and have that affect a maximum stat() | |
9 | rate or something like that). | |
10 | ||
03019e41 WD |
11 | To use this patch, run these commands for a successful build: |
12 | ||
13 | patch -p1 <patches/slow-down.diff | |
14 | ./configure (optional if already run) | |
15 | make | |
16 | ||
6f921167 WD |
17 | --- old/flist.c |
18 | +++ new/flist.c | |
03019e41 | 19 | @@ -53,6 +53,7 @@ extern int copy_links; |
6f921167 WD |
20 | extern int copy_unsafe_links; |
21 | extern int protocol_version; | |
22 | extern int sanitize_paths; | |
23 | +extern unsigned long sleep_asec; | |
6f921167 WD |
24 | extern struct stats stats; |
25 | extern struct file_list *the_file_list; | |
56e792f1 | 26 | |
03019e41 | 27 | @@ -1036,6 +1037,9 @@ static void send_directory(int f, struct |
6f921167 WD |
28 | } |
29 | ||
30 | send_file_name(f, flist, fbuf, NULL, 0); | |
31 | + /* Sleep for a bit, to avoid hammering the disk. */ | |
32 | + if (sleep_asec) | |
33 | + usleep(sleep_asec); | |
34 | } | |
35 | ||
36 | fbuf[len] = '\0'; | |
37 | --- old/options.c | |
38 | +++ new/options.c | |
03019e41 | 39 | @@ -102,6 +102,7 @@ int size_only = 0; |
6f921167 WD |
40 | int daemon_bwlimit = 0; |
41 | int bwlimit = 0; | |
42 | int fuzzy_basis = 0; | |
43 | +unsigned long sleep_asec = 0; | |
44 | size_t bwlimit_writemax = 0; | |
45 | int ignore_existing = 0; | |
46 | int ignore_non_existing = 0; | |
03019e41 | 47 | @@ -377,6 +378,7 @@ void usage(enum logcode F) |
6f921167 WD |
48 | rprintf(F," --password-file=FILE read password from FILE\n"); |
49 | rprintf(F," --list-only list the files instead of copying them\n"); | |
50 | rprintf(F," --bwlimit=KBPS limit I/O bandwidth; KBytes per second\n"); | |
51 | + rprintf(F," --slow-down=USECs sleep N usec while creating the filelist\n"); | |
52 | rprintf(F," --write-batch=FILE write a batched update to FILE\n"); | |
53 | rprintf(F," --only-write-batch=FILE like --write-batch but w/o updating destination\n"); | |
54 | rprintf(F," --read-batch=FILE read a batched update from FILE\n"); | |
03019e41 WD |
55 | @@ -516,6 +518,7 @@ static struct poptOption long_options[] |
56 | {"log-format", 0, POPT_ARG_STRING, &stdout_format, 0, 0, 0 }, /* DEPRECATED */ | |
6f921167 WD |
57 | {"itemize-changes", 'i', POPT_ARG_NONE, 0, 'i', 0, 0 }, |
58 | {"bwlimit", 0, POPT_ARG_INT, &bwlimit, 0, 0, 0 }, | |
59 | + {"slow-down", 0, POPT_ARG_LONG, &sleep_asec, 0, 0, 0 }, | |
60 | {"backup", 'b', POPT_ARG_NONE, &make_backups, 0, 0, 0 }, | |
61 | {"backup-dir", 0, POPT_ARG_STRING, &backup_dir, 0, 0, 0 }, | |
62 | {"suffix", 0, POPT_ARG_STRING, &backup_suffix, 0, 0, 0 }, |