use ndbinfo;
Show view definitions
desc cpustat_50ms;
Field	Type	Null	Key	Default	Extra
node_id	int(10) unsigned	YES		NULL	
thr_no	int(10) unsigned	YES		NULL	
OS_user_time	int(10) unsigned	YES		NULL	
OS_system_time	int(10) unsigned	YES		NULL	
OS_idle_time	int(10) unsigned	YES		NULL	
exec_time	int(10) unsigned	YES		NULL	
sleep_time	int(10) unsigned	YES		NULL	
spin_time	int(10) unsigned	YES		NULL	
send_time	int(10) unsigned	YES		NULL	
buffer_full_time	int(10) unsigned	YES		NULL	
elapsed_time	int(10) unsigned	YES		NULL	
desc cpustat_1sec;
Field	Type	Null	Key	Default	Extra
node_id	int(10) unsigned	YES		NULL	
thr_no	int(10) unsigned	YES		NULL	
OS_user_time	int(10) unsigned	YES		NULL	
OS_system_time	int(10) unsigned	YES		NULL	
OS_idle_time	int(10) unsigned	YES		NULL	
exec_time	int(10) unsigned	YES		NULL	
sleep_time	int(10) unsigned	YES		NULL	
spin_time	int(10) unsigned	YES		NULL	
send_time	int(10) unsigned	YES		NULL	
buffer_full_time	int(10) unsigned	YES		NULL	
elapsed_time	int(10) unsigned	YES		NULL	
desc cpustat_20sec;
Field	Type	Null	Key	Default	Extra
node_id	int(10) unsigned	YES		NULL	
thr_no	int(10) unsigned	YES		NULL	
OS_user_time	int(10) unsigned	YES		NULL	
OS_system_time	int(10) unsigned	YES		NULL	
OS_idle_time	int(10) unsigned	YES		NULL	
exec_time	int(10) unsigned	YES		NULL	
sleep_time	int(10) unsigned	YES		NULL	
spin_time	int(10) unsigned	YES		NULL	
send_time	int(10) unsigned	YES		NULL	
buffer_full_time	int(10) unsigned	YES		NULL	
elapsed_time	int(10) unsigned	YES		NULL	
desc cpustat;
Field	Type	Null	Key	Default	Extra
node_id	int(10) unsigned	YES		NULL	
thr_no	int(10) unsigned	YES		NULL	
OS_user	int(10) unsigned	YES		NULL	
OS_system	int(10) unsigned	YES		NULL	
OS_idle	int(10) unsigned	YES		NULL	
thread_exec	int(10) unsigned	YES		NULL	
thread_sleeping	int(10) unsigned	YES		NULL	
thread_spinning	int(10) unsigned	YES		NULL	
thread_send	int(10) unsigned	YES		NULL	
thread_buffer_full	int(10) unsigned	YES		NULL	
elapsed_time	int(10) unsigned	YES		NULL	
Create temporary table for more diagnostics on failure
create temporary table cpustat_sum (
tstamp timestamp,
source char(20),
cnt int,
OS_user_time int,
OS_system_time int,
OS_idle_time int,
exec_time int,
sleep_time int,
spin_time int,
send_time int,
buffer_flule_time int,
elapsed_time int
);
Check that the tables 'fill' over time if they are not
already full
select @node_id:=node_id, @thr_no:=thr_no from cpustat_50ms limit 1;
There should be no invalid lines.
That is lines width longer duration than sampling period.
Expect zero as result.
select count(1) as invalid_lines from cpustat_50ms
where node_id=@node_id and thr_no=@thr_no and
OS_user_time > (2 * 1 * 1000000);
invalid_lines
0
select count(1) as invalid_lines from cpustat_1sec
where node_id=@node_id and thr_no=@thr_no and
OS_user_time > (2 * 20 * 1 * 1000000);
invalid_lines
0
select count(1) as invalid_lines from cpustat_20sec
where node_id=@node_id and thr_no=@thr_no and
OS_user_time > (2 * 20 * 20 * 1000000);
invalid_lines
0
Save line counts before sleep.
select count(1) into @start_lines_50ms from cpustat_50ms
where node_id=@node_id and thr_no=@thr_no;
select count(1) into @start_lines_1sec from cpustat_1sec
where node_id=@node_id and thr_no=@thr_no;
select count(1) into @start_lines_20sec from cpustat_20sec
where node_id=@node_id and thr_no=@thr_no;
insert into cpustat_sum
select now(), 'cpustat_50ms', count(*),
sum(OS_user_time), sum(OS_system_time), sum(OS_idle_time),
sum(exec_time), sum(sleep_time), sum(spin_time),
sum(send_time), sum(buffer_full_time), sum(elapsed_time)
from cpustat_50ms where node_id=@node_id and thr_no=@thr_no;
insert into cpustat_sum
select now(), 'cpustat_1sec', count(*),
sum(OS_user_time), sum(OS_system_time), sum(OS_idle_time),
sum(exec_time), sum(sleep_time), sum(spin_time),
sum(send_time), sum(buffer_full_time), sum(elapsed_time)
from cpustat_1sec where node_id=@node_id and thr_no=@thr_no;
insert into cpustat_sum
select now(), 'cpustat_20sec', count(*),
sum(OS_user_time), sum(OS_system_time), sum(OS_idle_time),
sum(exec_time), sum(sleep_time), sum(spin_time),
sum(send_time), sum(buffer_full_time), sum(elapsed_time)
from cpustat_20sec where node_id=@node_id and thr_no=@thr_no;
select now() into @sleep_start;
select now() into @sleep_end;
insert into cpustat_sum
select now(), 'cpustat_50ms', count(*),
sum(OS_user_time), sum(OS_system_time), sum(OS_idle_time),
sum(exec_time), sum(sleep_time), sum(spin_time),
sum(send_time), sum(buffer_full_time), sum(elapsed_time)
from cpustat_50ms where node_id=@node_id and thr_no=@thr_no;
insert into cpustat_sum
select now(), 'cpustat_1sec', count(*),
sum(OS_user_time), sum(OS_system_time), sum(OS_idle_time),
sum(exec_time), sum(sleep_time), sum(spin_time),
sum(send_time), sum(buffer_full_time), sum(elapsed_time)
from cpustat_1sec where node_id=@node_id and thr_no=@thr_no;
insert into cpustat_sum
select now(), 'cpustat_20sec', count(*),
sum(OS_user_time), sum(OS_system_time), sum(OS_idle_time),
sum(exec_time), sum(sleep_time), sum(spin_time),
sum(send_time), sum(buffer_full_time), sum(elapsed_time)
from cpustat_20sec where node_id=@node_id and thr_no=@thr_no;
select count(1) as invalid_lines from cpustat_50ms
where node_id=@node_id and thr_no=@thr_no and
OS_user_time > (2 * 1 * 1000000);
invalid_lines
0
select count(1) as invalid_lines from cpustat_1sec
where node_id=@node_id and thr_no=@thr_no and
OS_user_time > (2 * 20 * 1 * 1000000);
invalid_lines
0
select count(1) as invalid_lines from cpustat_20sec
where node_id=@node_id and thr_no=@thr_no and
OS_user_time > (2 * 20 * 20 * 1000000);
invalid_lines
0
Save line counts after sleep.
select count(1) into @later_lines_50ms from cpustat_50ms
where node_id=@node_id and thr_no=@thr_no;
select count(1) into @later_lines_1sec from cpustat_1sec
where node_id=@node_id and thr_no=@thr_no;
select count(1) into @later_lines_20sec from cpustat_20sec
where node_id=@node_id and thr_no=@thr_no;
drop table cpustat_sum;