Messages in this thread | | | From | Al Boldi <> | Subject | Re: Resource limits | Date | Mon, 26 Sep 2005 20:32:14 +0300 |
| |
Neil Horman wrote: > On Mon, Sep 26, 2005 at 05:18:17PM +0300, Al Boldi wrote: > > Rik van Riel wrote: > > > On Sun, 25 Sep 2005, Al Boldi wrote: > > > > Resource limits in Linux, when available, are currently very > > > > limited. > > > > > > > > i.e.: > > > > Too many process forks and your system may crash. > > > > This can be capped with threads-max, but may lead you into a > > > > lock-out. > > > > > > > > What is needed is a soft, hard, and a special emergency limit that > > > > would allow you to use the resource for a limited time to circumvent > > > > a lock-out. > > > > > > > > Would this be difficult to implement? > > > > > > How would you reclaim the resource after that limited time is > > > over ? Kill processes? > > > > That's one way, but really, the issue needs some deep thought. > > Leaving Linux exposed to a lock-out is rather frightening. > > What exactly is it that you're worried about here? Do you have a > particular concern that a process won't be able to fork or create a > thread? Resources that can be allocated to user space processes always > run the risk that their allocation will not succede. Its up to the > application to deal with that.
Think about a DoS attack.
Thanks!
-- Al
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |