Date: Mon, 30 Dec 2019 15:41:00 -0600 From: Alan Cox <alc@rice.edu> To: Colin Percival <cperciva@tarsnap.com>, Alan Cox <alc@FreeBSD.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r356207 - in head/sys/arm64: arm64 include Message-ID: <1e67ebf7-20ab-a007-1f62-04bc0cb7cfcb@rice.edu> In-Reply-To: <0100016f589bb7e4-ad3fd7d7-ffaa-4097-9e8f-ee0828daf017-000000@email.amazonses.com> References: <201912302030.xBUKUWAO044693@repo.freebsd.org> <0100016f589bb7e4-ad3fd7d7-ffaa-4097-9e8f-ee0828daf017-000000@email.amazonses.com>
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On 12/30/19 2:59 PM, Colin Percival wrote: > On 2019-12-30 12:30, Alan Cox wrote: >> Author: alc >> Date: Mon Dec 30 20:30:31 2019 >> New Revision: 356207 >> URL: https://svnweb.freebsd.org/changeset/base/356207 >> >> Log: >> Determine whether the MMU hardware is capable of updating a page table >> entry's access flag and dirty state, and enable this feature when it's >> available. > Am I right in thinking that this should result in improved performance under > load? (I'm wondering if it's time to redo my amd64 vs arm64 EC2 benchmarks.) > Yes, a modest one.
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