![]() | |||||||||||||
Messages in this thread |
On Sat, 28 Apr 2007, Lee Revell wrote: > On 4/28/07, Thomas Gleixner <tglx@linutronix.de> wrote: >> >> Well, it is not really a DoS. The rescheduling of the process is limited >> by the scheduler and the available CPU time (depending on the number of >> runnable tasks in the system). > > Shouldn't an unprivileged process be rate limited somehow to avoid > flooding the machine with interrupts? We restrict nonroot users from > setting the RTC interrupt rate higher than 64Hz for a similar reason > (granted, this limit dates back to the 486 days and should probably be > increased to 1024 Hz). Isn't that what /etc/security/limits.conf is for? Just limit the CPU usage. > Root and SCHED_FIFO tasks could be exempt from rate limiting, to avoid > the need to introduce a new rlimit which would take years for > userspace to catch up to. > > Lee William Heimbigner icxcnika@mar.tar.cc - 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/ | ||||||||||||
| Last update: 2007-04-28 22:49 [from the cache] ©2003-2008 | |||||||||||||