On 25/06/2014 17:44, Attilio Rao wrote: > Why? If VM needs more wired memory I assume that we can tune up the > default value of max_wired? > > I think that however your case makes an interesting point: if we want > to make unmanaged pages as inherently wired, we likely need a little > bit higher max_wired value. When I completed a patch for this, pho@ > couldn't reproduce any similar issue even with stress-testing (and > also, the places to allocate unmanaged pages and not requesting > VM_ALLOC_WIRED were very little, almost 0, with the exception of > vm_page_alloc_contig() calls) but I think it is a valid proposition. > > However I would still like to have more control on kernel-specific > wired memory for processes. I'm for example thinking to ARC vs. buffer > cache, where I expect the wired memory consumption to be much bigger > for the former case.
My humble opinion is that userland page wiring should be tuned via resource limits and that vm.max_wired could be retired altogether. Kernel wiring ignores the knob anyway. -- Andriy Gapon _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
