Date: Wed, 7 Apr 2021 22:42:57 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: freebsd-stable List <stable@FreeBSD.org>, FreeBSD Current <current@FreeBSD.org> Subject: stable/13, vm page counts do not add up Message-ID: <0606571f-fec0-c7ad-98e8-a0b8554918e2@FreeBSD.org>
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I regularly see that the top's memory line does not add up (and by a lot). That can be seen with vm.stats as well. For example: $ sysctl vm.stats | fgrep count vm.stats.vm.v_cache_count: 0 vm.stats.vm.v_user_wire_count: 3231 vm.stats.vm.v_laundry_count: 262058 vm.stats.vm.v_inactive_count: 3054178 vm.stats.vm.v_active_count: 621131 vm.stats.vm.v_wire_count: 1871176 vm.stats.vm.v_free_count: 187777 vm.stats.vm.v_page_count: 8134982 $ bc >>> 187777 + 1871176 + 621131 + 3054178 + 262058 5996320 >>> 8134982 - 5996320 2138662 As you can see, it's not a small number of pages either. Approximately 2 million pages, 8 gigabytes or 25% of the whole memory on this system. This is 47c00a9835926e96, 13.0-STABLE amd64. I do not think that I saw anything like that when I used (much) older FreeBSD. -- Andriy Gapon
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