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Code Releases Activity

IO loops now actually measuring their time (show threads all works)

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This commit is contained in:
Maria Matejka 2023-04-26 19:10:52 +02:00
parent ce7495b49a
commit 2ddb34c9d1
2 changed files with 60 additions and 2 deletions
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54
sysdep/unix/io-loop.c
View File

@ -49,15 +49,20 @@ static void ns_init(void)
bug("clock_gettime: %m");
}
#define NSEC_IN_SEC ((u64) (1000 * 1000 * 1000))
static u64 ns_now(void)
{
struct timespec ts;
if (clock_gettime(CLOCK_MONOTONIC, &ts))
bug("clock_gettime: %m");
return (u64) (ts.tv_sec - ns_begin.tv_sec) * 1000000000 + ts.tv_nsec - ns_begin.tv_nsec;
return (u64) (ts.tv_sec - ns_begin.tv_sec) * NSEC_IN_SEC + ts.tv_nsec - ns_begin.tv_nsec;
}
#define NSEC_TO_SEC(x) ((x) / NSEC_IN_SEC)
#define CURRENT_SEC NSEC_TO_SEC(ns_now())
/*
* Current thread context
@ -960,7 +965,21 @@ bird_thread_show(void *data)
WALK_LIST(loop, this_thread->loops)
{
if (tsd->show_loops)
cli_printf(tsd->cli, -1026, " Loop %s time: %t", domain_name(loop->time.domain), loop->total_time_spent_ns NS);
{
char b[TIME_BY_SEC_SIZE * sizeof("123456789, ")], *bptr = b, *bend = b + sizeof(b);
uint cs = CURRENT_SEC;
uint fs = NSEC_TO_SEC(loop->last_time_finished_ns);
for (uint i = 0; i <= cs && i < TIME_BY_SEC_SIZE; i++)
bptr += bsnprintf(bptr, bend - bptr, "% 9lu ",
(cs - i > fs) ? 0 : loop->time_by_sec_ns[(cs - i) % TIME_BY_SEC_SIZE]);
bptr[-1] = 0; /* Drop the trailing space */
cli_printf(tsd->cli, -1026, " Loop %s total time: %t",
domain_name(loop->time.domain), loop->total_time_spent_ns NS);
cli_printf(tsd->cli, -1026, " last %d secs [ns]: %s",
MIN(CURRENT_SEC+1, TIME_BY_SEC_SIZE), b);
}
total_time_ns += loop->total_time_spent_ns;
}
@ -1204,6 +1223,37 @@ birdloop_run(void *_loop)
this_thread->sock_changed += loop->sock_changed;
loop->sock_changed = 0;
/* Get finish time */
u64 finish_time = ns_now();
loop->total_time_spent_ns += finish_time - locked_time;
log(L_INFO "%p: lock to finish time: %lu %lu", loop, locked_time, finish_time);
/* Zero records for seconds where we haven't run */
if (NSEC_TO_SEC(loop->last_time_finished_ns) + TIME_BY_SEC_SIZE < NSEC_TO_SEC(locked_time))
memset(loop->time_by_sec_ns, 0, sizeof(loop->time_by_sec_ns));
else
for (u64 fclr = NSEC_TO_SEC(loop->last_time_finished_ns) + 1;
fclr <= NSEC_TO_SEC(locked_time);
fclr++)
{
log(L_INFO "%p: fclr %lu", loop, fclr % TIME_BY_SEC_SIZE);
loop->time_by_sec_ns[fclr % TIME_BY_SEC_SIZE] = 0;
}
while (NSEC_TO_SEC(locked_time) != NSEC_TO_SEC(finish_time))
{
u64 part = (NSEC_TO_SEC(locked_time) + 1) * NSEC_IN_SEC - locked_time;
log(L_INFO "%p: part %lu to %lu", loop, part, NSEC_TO_SEC(locked_time) % TIME_BY_SEC_SIZE);
loop->time_by_sec_ns[NSEC_TO_SEC(locked_time) % TIME_BY_SEC_SIZE] += part;
locked_time += part;
}
log(L_INFO "%p: part %lu to %lu", loop, finish_time - locked_time, NSEC_TO_SEC(locked_time) % TIME_BY_SEC_SIZE);
loop->time_by_sec_ns[NSEC_TO_SEC(locked_time) % TIME_BY_SEC_SIZE] += finish_time - locked_time;
loop->last_time_finished_ns = finish_time;
birdloop_leave(loop);
}

8
sysdep/unix/io-loop.h
View File

@ -29,6 +29,11 @@ void pipe_pollin(struct pipe *, struct pfd *);
void pipe_drain(struct pipe *);
void pipe_kick(struct pipe *);
struct total_time_since {
u64 total;
u64 since;
};
struct birdloop
{
node n;
@ -60,6 +65,9 @@ struct birdloop
struct bird_thread *thread;
#define TIME_BY_SEC_SIZE 16
u64 time_by_sec_ns[TIME_BY_SEC_SIZE];
u64 last_time_finished_ns;
u64 total_time_spent_ns;
};