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throttle: add --throttle-factor option to control throttling factor

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Also change the initializer syntax for the option list to use C99
compound literals.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>
This commit is contained in:
Zygo Blaxell
2024-12-16 22:23:56 -05:00
parent e79b242ce2
commit d160edc15a
2 changed files with 24 additions and 13 deletions
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1
src/bees-usage.txt
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@ -12,6 +12,7 @@ Load management options:
-C, --thread-factor Worker thread factor (default 1)
-G, --thread-min Minimum worker thread count (default 0)
-g, --loadavg-target Target load average for worker threads (default none)
--throttle-factor Idle time between operations (default 1.0)
Filesystem tree traversal options:
-m, --scan-mode Scanning mode (0..4, default 4)

36
src/bees.cc
View File

@ -716,20 +716,25 @@ bees_main(int argc, char *argv[])
BeesRoots::ScanMode root_scan_mode = BeesRoots::SCAN_MODE_EXTENT;
// Configure getopt_long
// Options with no short form
enum {
BEES_OPT_THROTTLE_FACTOR = 256,
};
static const struct option long_options[] = {
{ "thread-factor", required_argument, NULL, 'C' },
{ "thread-min", required_argument, NULL, 'G' },
{ "strip-paths", no_argument, NULL, 'P' },
{ "no-timestamps", no_argument, NULL, 'T' },
{ "workaround-btrfs-send", no_argument, NULL, 'a' },
{ "thread-count", required_argument, NULL, 'c' },
{ "loadavg-target", required_argument, NULL, 'g' },
{ "help", no_argument, NULL, 'h' },
{ "scan-mode", required_argument, NULL, 'm' },
{ "absolute-paths", no_argument, NULL, 'p' },
{ "timestamps", no_argument, NULL, 't' },
{ "verbose", required_argument, NULL, 'v' },
{ 0, 0, 0, 0 },
{ .name = "thread-factor", .has_arg = required_argument, .val = 'C' },
{ .name = "throttle-factor", .has_arg = required_argument, .val = BEES_OPT_THROTTLE_FACTOR },
{ .name = "thread-min", .has_arg = required_argument, .val = 'G' },
{ .name = "strip-paths", .has_arg = no_argument, .val = 'P' },
{ .name = "no-timestamps", .has_arg = no_argument, .val = 'T' },
{ .name = "workaround-btrfs-send", .has_arg = no_argument, .val = 'a' },
{ .name = "thread-count", .has_arg = required_argument, .val = 'c' },
{ .name = "loadavg-target", .has_arg = required_argument, .val = 'g' },
{ .name = "help", .has_arg = no_argument, .val = 'h' },
{ .name = "scan-mode", .has_arg = required_argument, .val = 'm' },
{ .name = "absolute-paths", .has_arg = no_argument, .val = 'p' },
{ .name = "timestamps", .has_arg = no_argument, .val = 't' },
{ .name = "verbose", .has_arg = required_argument, .val = 'v' },
{ 0 },
};
// Build getopt_long's short option list from the long_options table.
@ -766,6 +771,9 @@ bees_main(int argc, char *argv[])
case 'C':
thread_factor = stod(optarg);
break;
case BEES_OPT_THROTTLE_FACTOR:
bees_throttle_factor = stod(optarg);
break;
case 'G':
thread_min = stoul(optarg);
break;
@ -851,6 +859,8 @@ bees_main(int argc, char *argv[])
BEESLOGNOTICE("setting worker thread pool maximum size to " << thread_count);
TaskMaster::set_thread_count(thread_count);
BEESLOGNOTICE("setting throttle factor to " << bees_throttle_factor);
// Set root path
string root_path = argv[optind++];
BEESLOGNOTICE("setting root path to '" << root_path << "'");