Date: Sat, 28 Jul 2018 21:38:12 -0400 (EDT) From: Garrett Wollman <wollman@hergotha.csail.mit.edu> To: jmg@funkthat.com Cc: freebsd-net@freebsd.org Subject: Re: 9k jumbo clusters Message-ID: <201807290138.w6T1cCSc069932@hergotha.csail.mit.edu> References: <20180729011153.GD2884@funkthat.com> <EBDE6EDD-D875-43D8-8D65-1F1344A6B817@ixsystems.com> <20180727221843.GZ2884@funkthat.com> <CAJ-VmomHQ%2BzcJ%2BHXAjMg9aS1RPZsdHy0tYjdKzjpwrUY%2B05NiQ@mail.gmail.com>
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In article <20180729011153.GD2884@funkthat.com> jmg@funkthat.com writes: >And I know you know the problem is that over time memory is fragmented, >so if suddenly you need more jumbo frames than you already have, you're >SOL... This problem instantly disappears if you preallocate several gigabytes of contiguous physical memory at boot time. And if you're doing something network-intensive and care about performance, you probably don't mind doing that. -GAWollman
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