dtg78700 2018-12-26 18:01
浏览 49


Why when I initialize ticker and then update it, original ticker still live in memory and if I make for loop it will kill my RAM very soon

timeOut := 10
ticker := time.NewTicker(time.Duration(timeOut) * time.Second)
for {
    ticker = time.NewTicker(time.Duration(timeOut) * time.Second)
  • 写回答

2条回答 默认 最新

  • doufen3786 2018-12-26 18:08
    for {
        ticker = time.NewTicker(time.Duration(timeOut) * time.Second)

    That's going to create ticker instances as fast as possible, and because of the nature of ticker objects they won't be able to clean up ( they're referenced by the implementation of ticket which, due to its async nature, happens in a different goroutine). Go can do this very quickly, resulting in OOM ( out of memory) error very rapidly.

    But this pattern doesn't make any sense. There's no good reason to create new tickers like this in a for loop. You can create multiple tickers, even very many of them, but you can't create infinite tickers, nor does it make much sense to do so.

    Further, notice you're not actually using your tickers anywhere. Consider the example here: https://gobyexample.com/tickers . You'll see how they interact with the ticker to make code run with each tick. Note the ticker there is created once, not in a loop.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?



  • ¥15 做一个关于单片机的比较难的代码,然后搞一个PPT进行解释
  • ¥40 matlab简单代码修改补充
  • ¥15 python提取.csv文件中的链接会经常出现爬取失败
  • ¥15 数据结构中的数组地址问题
  • ¥15 maya的mel里,怎样先选择模型A,然后利用mel脚本自动选择有相同名字的模型B呢。
  • ¥15 Python题,根本不会啊
  • ¥15 会会信号与系统和python的来
  • ¥15 关于#python#的问题
  • ¥20 oracle RAC 怎么配置啊,配置
  • ¥15 excel 日常使用中出现问题