<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Mon, Mar 10, 2014 at 8:13 PM, Matthew Dillon <span dir="ltr"><<a href="mailto:dillon@apollo.backplane.com" target="_blank">dillon@apollo.backplane.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> DragonFly doesn't have the problem when<br>
machdep.pmap_mmu_optimize is turned on (which it is for these tests),<br>
even though DFly uses 4KB pages, because the kernel will share page<br>
table pages (even across fork()s) for compatible mappings.<br></blockquote><div><br></div><div>There were people who had crashes/problems of some sort when that sysctl was set, though, wasn't there? That's a heck of a side effect. Would we see similar results with it off?</div>
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