scheduler

问题 I am using Quartz Scheduler and there are 15 jobs. For each job there is one trigger. I want to set priority for each trigger. I can set low priority as 10 and high priority as 1. But as I am having 15 triggers for 15 jobs I need different priority for each trigger. e.g trigger1 will have priority 10, trigger2 will have priority 9. In this way I need to give same priority for two triggers. So if two triggers with same priority will get execute at same time then which trigger will execute

问题 I am using Fullcalendar Scheduler, and the problem is when i have many resources, it becomes not good, like this: The live demo with litle resources: http://fullcalendar.io/js/fullcalendar-scheduler-1.3.3/demos/vertical-resource-view.html I have an idea, it's adding an horizontal scroll, but i don't know the way, can you guys help me out ? Thank you very much and have a great day. 回答1: .fc-view-container { overflow-x: scroll; } .fc-view.fc-agendaDay-view.fc-agenda-view{ width: 500%; } /* *

问题 One of our agents has a job that runs every 5 seconds, which seems to stop for no apparent reason. There are no exceptions being thrown, another scheduled task, a heartbeat that confirms that the agent is running correctly, still works, and there are no error messages in the windows event log. The scheduled task runs correctly for a few days, but then stops for no apparent reason, as if the scheduler forgets to start the task again. I have no debug information, since there are none, so my

问题 One of our agents has a job that runs every 5 seconds, which seems to stop for no apparent reason. There are no exceptions being thrown, another scheduled task, a heartbeat that confirms that the agent is running correctly, still works, and there are no error messages in the windows event log. The scheduled task runs correctly for a few days, but then stops for no apparent reason, as if the scheduler forgets to start the task again. I have no debug information, since there are none, so my

问题 I've read in multiple places that Linux's default scheduler is hyperthreading aware on multi-core machines, meaning that if you have a machine with 2 real cores (4 HT), it won't schedule two busy threads onto logical cores in a way that they both run on the same physical cores (which would lead to 2x performance cost in many cases). But when I run stress -c 2 (spawns two threads to run on 100% CPU) on my Intel i5-2520M, it often schedules (and keeps) the two threads onto HT cores 1 and 2,

问题 What is voluntary preemption? I only know that it's a concept in scheduling. 回答1: It depends a little bit on the OS. In some RTOS, voluntary preemption means that the running process declares points where it can be preempted (where otherwise it would run until completion). Another way to think of this variant is that of a yield in a coroutine . This is in contrast to most desktop OS where the kernel determines preemption. Keep in mind that some RTOS do not have the concept of a "user mode".

问题 I am using Spring quartz Scheduler but I am not using an XML file. I want to create the entire configuration programmatically. I have written the following code. package com.eaportal.service.impl; import java.text.ParseException; import java.util.Date; import java.util.HashMap; import java.util.Map; import org.quartz.JobDetail; import org.springframework.scheduling.SchedulingException; import org.springframework.scheduling.quartz.CronTriggerBean; import org.springframework.scheduling.quartz

问题 i would like to use execution date as parameter to my sql file: i tried dt = '{{ ds }}' s3_to_redshift = PostgresOperator( task_id='s3_to_redshift', postgres_conn_id='redshift', sql='s3_to_redshift.sql', params={'file': dt}, dag=dag ) but it doesn't work. 回答1: dt = '{{ ds }}' Doesn't work because Jinja (the templating engine used within airflow) does not process the entire Dag definition file. For each Operator there are fields which Jinja will process, which are part of the definition of the

问题 Just curious. How does actually the function Sleep() work (declared in windows.h)? Maybe not just that implementation, but anyone. With that I mean - how is it implemented? How can it make the code "stop" for a specific time? Also curious about how cin >> and those actually work . What do they do exactly? The only way I know how to "block" something from continuing to run is with a while loop, but considering that that takes a huge amount of processing power in comparison to what's happening

问题 Just curious. How does actually the function Sleep() work (declared in windows.h)? Maybe not just that implementation, but anyone. With that I mean - how is it implemented? How can it make the code "stop" for a specific time? Also curious about how cin >> and those actually work . What do they do exactly? The only way I know how to "block" something from continuing to run is with a while loop, but considering that that takes a huge amount of processing power in comparison to what's happening