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rate-limit progress counters

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for simple local operations, they could easily dominate the cpu load.
also, over a slow remote tty, they could slow down things noticeably.
This commit is contained in:
Oswald Buddenhagen 2022-05-19 21:24:52 +02:00
parent 1867a7c5ea
commit 8fbc4323f4
1 changed files with 44 additions and 7 deletions
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51
src/main_sync.c
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@ -13,16 +13,17 @@ static int ops_any[2], trash_any[2];
static int chans_total, chans_done;
static int boxes_total, boxes_done;
void
stats( void )
static int stats_steps;
static int64_t stats_stamp;
static wakeup_t stats_wakeup;
static void
print_stats( void )
{
char buf[3][64];
char *cs;
static int cols = -1;
if (!(DFlags & PROGRESS))
return;
if (cols < 0 && (!(cs = getenv( "COLUMNS" )) || !(cols = atoi( cs ))))
cols = 80;
int ll = sprintf( buf[2], "C: %d/%d B: %d/%d", chans_done, chans_total, boxes_done, boxes_total );
@ -38,6 +39,37 @@ stats( void )
progress( "\r%s F: %.*s N: %.*s", buf[2], cls, buf[0], cls, buf[1] );
}
static void
stats_timeout( void *aux ATTR_UNUSED )
{
stats_steps = -1;
conf_wakeup( &stats_wakeup, 200 );
print_stats();
}
void
stats( void )
{
if (!(DFlags & PROGRESS))
return;
// If the main loop appears to be running, skip the sync path.
if (stats_steps < 0)
return;
// Rate-limit the (somewhat) expensive timer queries.
if (++stats_steps < 10)
return;
stats_steps = 0;
int64_t now = get_now();
if (now < stats_stamp + 300)
return;
stats_stamp = now;
print_stats();
}
static void
summary( void )
{
@ -339,8 +371,10 @@ sync_chans( core_vars_t *cvars, char **argv )
}
mvars->chanptr = chans;
if (!cvars->list)
stats();
if (!cvars->list && (DFlags & PROGRESS)) {
init_wakeup( &stats_wakeup, stats_timeout, NULL );
stats_timeout( NULL );
}
do_sync_chans( mvars );
main_loop();
if (!cvars->list) {
@ -398,6 +432,7 @@ static void
do_sync_chans( main_vars_t *mvars )
{
while (mvars->chanptr) {
stats_steps = 0; // Determine main loop use afresh
mvars->chan = mvars->chanptr->conf;
info( "Channel %s\n", mvars->chan->name );
for (int t = 0; t < 2; t++) {
@ -445,6 +480,8 @@ do_sync_chans( main_vars_t *mvars )
advance_chan( mvars );
}
cleanup_drivers();
if (!mvars->cvars->list && (DFlags & PROGRESS))
wipe_wakeup( &stats_wakeup );
}
static void