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[rate_ctr] always 'overflow' in next larger inetrval when interval ends 

If a second ends, we add the number of events in that just-ended second
to the number of events in the currently running minute.  The same happens
at the end of a minute: We add the number of events in that just-ended
minute into the number of events of the still-running hour, etc.

This gives a much more meaningful numbers and we don't end up with
"12 events per second, but 0 events per minute" kind of situations
anymore.
This commit is contained in:
Harald Welte 2010-05-13 13:28:12 +02:00
parent cf734784b0
commit d2dce6df04
1 changed files with 6 additions and 0 deletions
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6
src/rate_ctr.c
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@ -24,6 +24,7 @@
#include <inttypes.h>
#include <string.h>
#include <osmocore/utils.h>
#include <osmocore/linuxlist.h>
#include <osmocore/talloc.h>
#include <osmocore/timer.h>
@ -75,6 +76,11 @@ static void interval_expired(struct rate_ctr *ctr, enum rate_ctr_intv intv)
ctr->intv[intv].rate = ctr->current - ctr->intv[intv].last;
/* save current counter for next interval */
ctr->intv[intv].last = ctr->current;
/* update the rate of the next bigger interval. This will
* be overwritten when that next larger interval expires */
if (intv + 1 < ARRAY_SIZE(ctr->intv))
ctr->intv[intv+1].rate += ctr->intv[intv].rate;
}
static struct timer_list rate_ctr_timer;