Date: Thu, 15 May 2025 14:28:04 GMT
From: Olivier Certner <olce@FreeBSD.org>
To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org
Subject: git: 1fd80186c91d - main - Revert commit 1935cc945642 ("vfs: vntblinit(): Rework comments on...")
Message-ID: <202505151428.54FES4lx059286@gitrepo.freebsd.org>
next in thread | raw e-mail | index | archive | help
The branch main has been updated by olce: URL: https://cgit.FreeBSD.org/src/commit/?id=1fd80186c91d847532e8354b81d03f17c9fcf650 commit 1fd80186c91d847532e8354b81d03f17c9fcf650 Author: Olivier Certner <olce@FreeBSD.org> AuthorDate: 2025-05-15 14:26:02 +0000 Commit: Olivier Certner <olce@FreeBSD.org> CommitDate: 2025-05-15 14:27:23 +0000 Revert commit 1935cc945642 ("vfs: vntblinit(): Rework comments on...") This is because the Differential Revision tag was wrong. Will be recommitted shortly. --- sys/kern/vfs_subr.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 769586ad0d6b..5fdd4b6c2474 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -757,15 +757,15 @@ vntblinit(void *dummy __unused) int cpu, physvnodes, virtvnodes; /* - * 'desiredvnodes' is the minimum of a function of the physical memory - * size and another of the kernel heap size (UMA limit, a portion of the - * KVA). - * - * Currently, on 64-bit platforms, 'desiredvnodes' is set to - * 'virtvnodes' up to a physical memory cutoff of ~1674MB, after which - * 'physvnodes' applies instead. With the current automatic tuning for - * 'maxfiles' (32 files/MB), 'desiredvnodes' becomes smaller than it at - * ~5136MB. + * Desiredvnodes is a function of the physical memory size and the + * kernel's heap size. Generally speaking, it scales with the + * physical memory size. The ratio of desiredvnodes to the physical + * memory size is 1:16 until desiredvnodes exceeds 98,304. + * Thereafter, the + * marginal ratio of desiredvnodes to the physical memory size is + * 1:64. However, desiredvnodes is limited by the kernel's heap + * size. The memory required by desiredvnodes vnodes and vm objects + * must not exceed 1/10th of the kernel's heap size. */ physvnodes = maxproc + pgtok(vm_cnt.v_page_count) / 64 + 3 * min(98304 * 16, pgtok(vm_cnt.v_page_count)) / 64;
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?202505151428.54FES4lx059286>