Date: Fri, 08 Dec 2023 11:04:25 +0000 From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 275594] High CPU usage by arc_prune; analysis and fix Message-ID: <bug-275594-3630-d03H4vjpGy@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-275594-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-275594-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D275594 --- Comment #7 from Seigo Tanimura <seigo.tanimura@gmail.com> --- (In reply to Seigo Tanimura from comment #6) Update: 1:25:00 since the build start, building lang/gcc12 and lang/rust. vfs.vnode.stats.count is ~1.4M. arc_prune tends to stick at about 20 - 25%= of the CPU with the occasional drops. The ARC memory is stable at ~4.6GB. The average vnode number requested for the reclaim by ZFS has exceeded 100K. I understand that the files generated by the builds exceed the upper limit = of the ARC memory. Arc_prune hence has to run continuously, though the interv= al avoids the starvation upon vnode_list_mtx. --=20 You are receiving this mail because: You are the assignee for the bug.=
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