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Is Linux/Windows/Mac tickless?

• deleted 2y ago
  [deleted]
• lionkor 2y ago
  Unsure if this is clear so I'll say it: Those are not real time OSs
  • sertsa 2y ago
    Pretty sure that most people here know that, so it remains a less obvious yet interesting question (while tangential to the posted article): Are Linux/Windows/Mac tickless?
    • ninkendo 2y ago
      I know Linux is, the rest probably are too. I remember when tickless support was merged: https://lwn.net/Articles/549580/ https://lwn.net/Articles/549580/ https://lwn.net/Articles/659490/ https://lwn.net/Articles/659490/
• sillywalk 2y ago
  From https://en.wikipedia.org/wiki/Tickless_kernel https://en.wikipedia.org/wiki/Tickless_kernel "The Linux kernel on s390 from 2.6.6[2] and on i386 from release 2.6.21 can be configured to turn the timer tick off... The XNU kernel from Mac OS X 10.4 on, and the NT kernel from Windows 8 on, are also tickless. The Solaris 8 kernel introduced the cyclic subsystem which allows arbitrary resolution timers and tickless operation. FreeBSD 9 introduced a "dynamic tick mode" (aka tickless). "
  • brcmthrowaway 2y ago
    What about beOS?
• yencabulator 2y ago
  My Linux sure is. It's a good idea for battery-powered devices. $ zgrep ^CONFIG_NO_HZ /proc/config.gz CONFIG_NO_HZ_COMMON=y CONFIG_NO_HZ_FULL=y CONFIG_NO_HZ=y