On 21 Oct, 16:45, Nobody <nob...@nowhere.com> wrote: > On Thu, 21 Oct 2010 02:34:15 -0700, Jon Clements wrote: > > I'm after something that says: "I want 512mb of physical RAM, I don't > > want you to page/swap it, if you can't do that, don't bother at all". > > Now I'm guessing, that an OS might be able to grant that, but later on > > have to kill the process as other higher-priority processes need RAM > > The mlock() system call locks a region of virtual memory into physical > memory. AFAICT, Python doesn't provide an interface, but you can use > ctypes for that.
Thank you and Alain for this. > > In Linux 2.6.9 and later, the ability to lock memory is controlled via > resource limits (see "man 2 setrlimit", "help ulimit" and "man 5 > limits.conf"). Earlier versions limit memory locking to processes owned by > root or with the CAP_IPC_LOCK capability. The "man" and "help" ref's are much appreciated. It's narrowed my search space. > Also, locking a specific region of memory won't necessarily help if the > program code and stack are subject to paging/swapping. You can use > mlockall() to lock all memory for a process. Good point. Thanks for pointers, Jon. -- http://mail.python.org/mailman/listinfo/python-list
