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.
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).
11 To use this patch, run these commands for a successful build:
13 patch -p1 <patches/slow-down.diff
14 ./configure (optional if already run)
19 @@ -61,6 +61,7 @@ extern int copy_links;
20 extern int copy_unsafe_links;
21 extern int protocol_version;
22 extern int sanitize_paths;
23 +extern unsigned long sleep_asec;
24 extern struct stats stats;
26 extern char curr_dir[MAXPATHLEN];
27 @@ -1470,6 +1471,9 @@ static void send_directory(int f, struct
30 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
31 + /* Sleep for a bit, to avoid hammering the disk. */
39 @@ -104,6 +104,7 @@ int size_only = 0;
40 int daemon_bwlimit = 0;
43 +unsigned long sleep_asec = 0;
44 size_t bwlimit_writemax = 0;
45 int ignore_existing = 0;
46 int ignore_non_existing = 0;
47 @@ -404,6 +405,7 @@ void usage(enum logcode F)
48 rprintf(F," --password-file=FILE read daemon-access 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");
55 @@ -566,6 +568,7 @@ static struct poptOption long_options[]
56 {"itemize-changes", 'i', POPT_ARG_NONE, 0, 'i', 0, 0 },
57 {"no-itemize-changes",0, POPT_ARG_VAL, &itemize_changes, 0, 0, 0 },
58 {"no-i", 0, POPT_ARG_VAL, &itemize_changes, 0, 0, 0 },
59 + {"slow-down", 0, POPT_ARG_LONG, &sleep_asec, 0, 0, 0 },
60 {"bwlimit", 0, POPT_ARG_INT, &bwlimit, 0, 0, 0 },
61 {"no-bwlimit", 0, POPT_ARG_VAL, &bwlimit, 0, 0, 0 },
62 {"backup", 'b', POPT_ARG_VAL, &make_backups, 1, 0, 0 },