scheduled-tasks

问题 I have a exe file that is executed every day by the Task Scheduler on my Windows 2008. If that script should fail to start, or if the script fails during execution, I would like to get an email notification. There are many examples of getting Task Schedular to send an email based on an event log entry. However, I only want to be notified if MY particular scheduled task fails, not get a notification for all tasks that fails with an EventID 203/103/201. How can I do that without any custom

问题 EDIT 1: Actually, print statements outputs to the Celery terminal, instead of the terminal where the python program is ran - as @PatrickAllen indicated OP I've recently started to use Celery, but can't even get a simple test going where I print a line to the terminal after a 30 second wait. In my tasks.py : from celery import Celery celery = Celery(__name__, broker='amqp://guest@localhost//', backend='amqp://guest@localhost//') @celery.task def test_message(): print ("schedule task says hello

问题 This thread was useful in finding out the next run-time for a scheduled task. How do I find out the next run time for a Scheduled Task? But, is there also a way to simply get the next scheduled task due to run? If I can get the date and name of the next task due to run, I can plug that date into a jQuery countdown timer, which will display a countdown to the next scheduled task, something like: TaskABC due to run in: 12 03 20 hrs min sec . This is for an admin interface in case you're

问题 While studying workqueue, I came across WorkQueue flags & constants defined in kernel. I have following doubts which i could not understand. What exactly draining & rescuer mean here? WQ_DRAINING = 1 << 6, /* internal: workqueue is draining */ WQ_RESCUER = 1 << 7, /* internal: workqueue has rescuer */ The number of CPUs defined for unbound workqueues is 4. What if I have an octa core processor. How the unbounded wq will be bounded to cpus. How they decided which CPUs to run as they have now 8

问题 I am totally new to the subject of cron jobs so I have no idea where to start learning about them; when, why, or how to use them with my Zend Framework application, or PHP in general. Can anyone explain the process, with an example, or recommend some good resources to get started? 回答1: Cron jobs is a mechanism to automate tasks in Linux operating system. And has pretty little to do witn Zend Framework. The framework can help you develop an advanced cron task in php though. But then you will

问题 What are the different approaches for creating scheduled tasks for web applications, with or without a separate web/desktop application? 回答1: If we're talking Microsoft platform, then I'd always develop a separate Windows Service to handle such batch tasks. You can always reference the same assemblies that are being used by your web application to avoid any nasty code duplication. 回答2: Jeff discussed this on the Stack Overflow blog - http://blog.stackoverflow.com/2008/07/easy-background-tasks

问题 I am looking for a scheduling library for C# and for a long time I though the "only" option is Quartz.NET which is quite robust and work just fine. But when I found "Reactive Extensions" (RX - http://msdn.microsoft.com/en-us/data/gg577609) I realized that it can do Time-Related operations as well and have native .NET frontend. What are the limitations of Rx in terms of Time-Related operations? I need to fire tasks repeatedly in specific interval, after time period or so. And are there any

问题 I use ScheduledExecutorService.scheduleAtFixedRate to run a daily task, like this: executor.scheduleAtFixedRate(task, d, 24L * 3600 * 1000, TimeUnit.MILLISECONDS); ( d is the initial delay in milliseconds). The executor is created by Executors.newSingleThreadScheduledExecutor() and runs multiple tasks, but they are all scheduled a few hours apart, and take at most a few minutes. I know that ScheduledExecutorService makes no guarantees about accuracy, and I'd need a real-time OS and JVM to get

问题 I am looking for a WorkQueue API offering the following features: java.util.Queue compatible offers (optional) Set-semantic single- and batch-processing concurrency (of course) scheduling different processing policies wait until next scheduled execution pre-process, if batch size met delayed processing (minimum time in queue, before being processed) persistence (optional) There are a lot of interesting implementations in the jdk, e.g. java.util.DelayQueue which i could use. I just wanted to

问题 I'm writing a program which needed to be run on single core. To bind it to single core, I'm using sched_setaffinity() , but the compiler gives warning: implicit declaration of function ‘sched_setaffinity’ My test code is: #include <stdio.h> #include <unistd.h> #define _GNU_SOURCE #include <sched.h> int main() { unsigned long cpuMask = 2; sched_setaffinity(0, sizeof(cpuMask), &cpuMask); printf("Hello world"); //some other function calls } Can you please help me to figure it out. Actually code