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MXS-1674 Change load granularity to 1 second

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With a granularity of 1 second, the load will from a human
perspective reflect the current situation. That also means
that the maxadmin output shows "natural" steps; 1s, 1m and 1h.
This commit is contained in:
Johan Wikman
2018-02-21 13:05:58 +02:00
parent fd4fd4eead
commit 6e9e83ccaf
3 changed files with 20 additions and 20 deletions
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18
server/core/internal/worker.hh
View File

@ -79,14 +79,14 @@ class WorkerLoad
public:
enum counter_t
{
TEN_SECONDS = 10 * 1000,
ONE_MINUTE = 6 * TEN_SECONDS,
ONE_SECOND = 1000,
ONE_MINUTE = 60 * ONE_SECOND,
ONE_HOUR = 60 * ONE_MINUTE,
};
enum
{
GRANULARITY = TEN_SECONDS
GRANULARITY = ONE_SECOND
};
/**
@ -143,8 +143,8 @@ public:
{
switch (counter)
{
case TEN_SECONDS:
return m_load_10_seconds.value();
case ONE_SECOND:
return m_load_1_second.value();
case ONE_MINUTE:
return m_load_1_minute.value();
@ -159,7 +159,7 @@ public:
}
/**
* When was the last 10 second period started.
* When was the last 1 second period started.
*
* @return The start time.
*/
@ -414,12 +414,12 @@ private:
uint32_t m_nValues; /*< How many values the buffer contains. */
};
uint64_t m_start_time; /*< When was a new 10-second period started. */
uint64_t m_start_time; /*< When was the current 1-second period started. */
uint64_t m_wait_start; /*< The time when the worker entered epoll_wait(). */
uint64_t m_wait_time; /*< How much time the worker has spent in epoll_wait(). */
AverageN<60> m_load_1_hour; /*< The average load during the last hour. */
AverageN<6> m_load_1_minute; /*< The average load during the last minute. */
Average1 m_load_10_seconds; /*< The load during the last 10-second period. */
AverageN<60> m_load_1_minute; /*< The average load during the last minute. */
Average1 m_load_1_second; /*< The load during the last 1-second period. */
};

8
server/core/poll.cc
View File

@ -240,8 +240,8 @@ dShowThreads(DCB *dcb)
{
dcb_printf(dcb, "Polling Threads.\n\n");
dcb_printf(dcb, " ID | State | #descriptors (curr) | #descriptors (tot) | Load (10s) | Load (1m) | Load (1h) |\n");
dcb_printf(dcb, "----+------------+---------------------+---------------------+------------+-----------+-----------+\n");
dcb_printf(dcb, " ID | State | #descriptors (curr) | #descriptors (tot) | Load (1s) | Load (1m) | Load (1h) |\n");
dcb_printf(dcb, "----+------------+---------------------+---------------------+-----------+-----------+-----------+\n");
for (int i = 0; i < n_threads; i++)
{
Worker* worker = Worker::get(i);
@ -276,9 +276,9 @@ dShowThreads(DCB *dcb)
worker->get_descriptor_counts(&nCurrent, &nTotal);
dcb_printf(dcb, " %2d | %10s | %19" PRIu32 " | %19" PRIu64 " | %10d | %9d | %9d |\n",
dcb_printf(dcb, " %2d | %10s | %19" PRIu32 " | %19" PRIu64 " | %9d | %9d | %9d |\n",
i, state, nCurrent, nTotal,
worker->load(Worker::Load::TEN_SECONDS),
worker->load(Worker::Load::ONE_SECOND),
worker->load(Worker::Load::ONE_MINUTE),
worker->load(Worker::Load::ONE_HOUR));
}

6
server/core/worker.cc
View File

@ -160,7 +160,7 @@ WorkerLoad::WorkerLoad()
, m_wait_start(0)
, m_wait_time(0)
, m_load_1_minute(&m_load_1_hour)
, m_load_10_seconds(&m_load_1_minute)
, m_load_1_second(&m_load_1_minute)
{
}
@ -170,14 +170,14 @@ void WorkerLoad::about_to_work(uint64_t now)
m_wait_time += (now - m_wait_start);
if (duration > TEN_SECONDS)
if (duration > ONE_SECOND)
{
int load_percentage = 100 * ((duration - m_wait_time) / (double)duration);
m_start_time = now;
m_wait_time = 0;
m_load_10_seconds.add_value(load_percentage);
m_load_1_second.add_value(load_percentage);
}
}