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Addition of show eventstats

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This commit is contained in:
Mark Riddoch
2014-10-23 13:38:46 +01:00
parent 70672e43a1
commit 9e0a8a0eee
5 changed files with 80 additions and 16 deletions
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87
server/core/poll.c
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@ -159,6 +159,17 @@ static struct {
int blockingpolls; /*< Number of epoll_waits with a timeout specified */
} pollStats;
#define N_QUEUE_TIMES 30
/**
* The event queue statistics
*/
static struct {
unsigned int qtimes[N_QUEUE_TIMES+1];
unsigned int exectimes[N_QUEUE_TIMES+1];
unsigned long maxqtime;
unsigned long maxexectime;
} queueStats;
/**
* How frequently to call the poll_loadav function used to monitor the load
* average of the poll subsystem.
@ -187,6 +198,7 @@ int i;
exit(-1);
}
memset(&pollStats, 0, sizeof(pollStats));
memset(&queueStats, 0, sizeof(queueStats));
bitmask_init(&poll_mask);
n_threads = config_threadcount();
if ((thread_data =
@ -543,9 +555,7 @@ int poll_spins = 0;
if (dcb->evq.pending_events == 0)
{
pollStats.evq_pending++;
#if PROFILE_POLL
dcb->evq.inserted = hkheartbeat;
#endif
}
dcb->evq.pending_events |= ev;
}
@ -567,9 +577,7 @@ int poll_spins = 0;
}
pollStats.evq_length++;
pollStats.evq_pending++;
#if PROFILE_POLL
dcb->evq.inserted = hkheartbeat;
#endif
if (pollStats.evq_length > pollStats.evq_max)
{
pollStats.evq_max = pollStats.evq_length;
@ -664,6 +672,7 @@ process_pollq(int thread_id)
DCB *dcb;
int found = 0;
uint32_t ev;
unsigned long qtime;
spinlock_acquire(&pollqlock);
if (eventq == NULL)
@ -712,6 +721,15 @@ uint32_t ev;
#if PROFILE_POLL
memlog_log(plog, hkheartbeat - dcb->evq.inserted);
#endif
qtime = hkheartbeat - dcb->evq.inserted;
dcb->evq.started = hkheartbeat;
if (qtime > N_QUEUE_TIMES)
queueStats.qtimes[N_QUEUE_TIMES]++;
else
queueStats.qtimes[qtime]++;
if (qtime > queueStats.maxqtime)
queueStats.maxqtime = qtime;
CHK_DCB(dcb);
@ -914,6 +932,14 @@ uint32_t ev;
spinlock_release(&dcb->dcb_initlock);
}
#endif
qtime = hkheartbeat - dcb->evq.started;
if (qtime > N_QUEUE_TIMES)
queueStats.exectimes[N_QUEUE_TIMES]++;
else
queueStats.exectimes[qtime % N_QUEUE_TIMES]++;
if (qtime > queueStats.maxexectime)
queueStats.maxexectime = qtime;
spinlock_acquire(&pollqlock);
dcb->evq.processing_events = 0;
@ -1010,6 +1036,7 @@ dprintPollStats(DCB *dcb)
{
int i;
dcb_printf(dcb, "\nPoll Statistics.\n\n");
dcb_printf(dcb, "No. of epoll cycles: %d\n",
pollStats.n_polls);
dcb_printf(dcb, "No. of epoll cycles with wait: %d\n",
@ -1164,8 +1191,8 @@ double qavg1 = 0.0, qavg5 = 0.0, qavg15 = 0.0;
if (thread_data == NULL)
return;
dcb_printf(dcb, " ID | State | # fds | Descriptor | Event\n");
dcb_printf(dcb, "----+------------+--------+------------------+---------------\n");
dcb_printf(dcb, " ID | State | # fds | Descriptor | Running | Event\n");
dcb_printf(dcb, "----+------------+--------+------------------+----------+---------------\n");
for (i = 0; i < n_threads; i++)
{
switch (thread_data[i].state)
@ -1188,11 +1215,11 @@ double qavg1 = 0.0, qavg5 = 0.0, qavg15 = 0.0;
}
if (thread_data[i].state != THREAD_PROCESSING)
dcb_printf(dcb,
" %2d | %-10s | | |\n",
" %2d | %-10s | | | |\n",
i, state);
else if (thread_data[i].cur_dcb == NULL)
dcb_printf(dcb,
" %2d | %-10s | %6d | |\n",
" %2d | %-10s | %6d | | |\n",
i, state, thread_data[i].n_fds);
else
{
@ -1201,9 +1228,10 @@ double qavg1 = 0.0, qavg5 = 0.0, qavg15 = 0.0;
if (event_string == NULL)
event_string = "??";
dcb_printf(dcb,
" %2d | %-10s | %6d | %-16p | %s\n",
" %2d | %-10s | %6d | %-16p | <%3d00ms | %s\n",
i, state, thread_data[i].n_fds,
thread_data[i].cur_dcb, event_string);
thread_data[i].cur_dcb, 1 + hkheartbeat - dcb->evq.started,
event_string);
free(event_string);
}
}
@ -1282,6 +1310,7 @@ uint32_t ev = EPOLLOUT;
else
{
dcb->evq.pending_events = ev;
dcb->evq.inserted = hkheartbeat;
if (eventq)
{
dcb->evq.prev = eventq->evq.prev;
@ -1297,9 +1326,7 @@ uint32_t ev = EPOLLOUT;
}
pollStats.evq_length++;
pollStats.evq_pending++;
#if PROFILE_POLL
dcb->evq.inserted = hkheartbeat;
#endif
if (pollStats.evq_length > pollStats.evq_max)
{
pollStats.evq_max = pollStats.evq_length;
@ -1317,17 +1344,16 @@ void
dShowEventQ(DCB *pdcb)
{
DCB *dcb;
int found = 0;
uint32_t ev;
spinlock_acquire(&pollqlock);
if (eventq == NULL)
{
/* Nothing to process */
spinlock_release(&pollqlock);
return 0;
return;
}
dcb = eventq;
dcb_printf(pdcb, "\nEvent Queue.\n");
dcb_printf(pdcb, "%-16s | %-10s | %-18s | %s\n", "DCB", "Status", "Processing Events",
"Pending Events");
dcb_printf(pdcb, "-----------------+------------+--------------------+-------------------\n");
@ -1340,3 +1366,34 @@ uint32_t ev;
} while (dcb != eventq);
spinlock_release(&pollqlock);
}
/**
* Print the event queue statistics
*
* @param pdcb The DCB to print the event queue to
*/
void
dShowEventStats(DCB *pdcb)
{
int i;
dcb_printf(pdcb, "\nEvent statistics.\n");
dcb_printf(pdcb, "Maximum queue time: %3d00ms\n", queueStats.maxqtime);
dcb_printf(pdcb, "Maximum execution time: %3d00ms\n", queueStats.maxexectime);
dcb_printf(pdcb, "Maximum event queue length: %3d\n", pollStats.evq_max);
dcb_printf(pdcb, "Current event queue length: %3d\n", pollStats.evq_length);
dcb_printf(pdcb, "\n");
dcb_printf(pdcb, " | Number of events\n");
dcb_printf(pdcb, "Duration | Queued | Executed\n");
dcb_printf(pdcb, "---------------+------------+-----------\n");
dcb_printf(pdcb, " < 100ms | %-10d | %-10d\n",
queueStats.qtimes[0], queueStats.exectimes[0]);
for (i = 1; i < N_QUEUE_TIMES; i++)
{
dcb_printf(pdcb, " %2d00 - %2d00ms | %-10d | %-10d\n", i, i + 1,
queueStats.qtimes[i], queueStats.exectimes[i]);
}
dcb_printf(pdcb, " > %2d00ms | %-10d | %-10d\n", N_QUEUE_TIMES,
queueStats.qtimes[N_QUEUE_TIMES], queueStats.exectimes[N_QUEUE_TIMES]);
}