On 8/18/05, Alan Cox <[EMAIL PROTECTED]> wrote: > Perhaps those application authors should provide a management interface > to do so within the soft limit range at least. Its not clear to me that > growing the fd array on a process is even safe. Some programs do size > arrays at startup after querying the rlimit data.
That's very true. Using such a remote-rlimit syscall would break all kinds of code. It's a basic assumption from Unix/POSIX that the limits remain constant. And as Alan hinted at: this is why there are soft and hard limits. If tey are set to the same value you obviously don't get anything. But this is the application programmer's fault. An application which is aware of resources and tries to limit them should set the soft limits to a reasonable low value and the hard limit to the absolute maximum (probably the system's maximum). Then you can have remote procedure calls into the application to adjust the soft limits. Having to change the hard limit means the capacity planning for the app is completely wrong. A restart is certainly acceptable in that case since it should really never happen. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
