Date: Sat, 28 Jun 2025 10:33:15 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 287872] boot time regression related to netlink and devd Message-ID: <bug-287872-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D287872 Bug ID: 287872 Summary: boot time regression related to netlink and devd Product: Base System Version: 14.3-STABLE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: net@FreeBSD.org Reporter: eugen@freebsd.org CC: melifaro@FreeBSD.org I have an old HP ProLiant DL120 G6 server that ran FreeBSD 13.5-STABLE/amd64 just fine until today I updated it to 14.3-STABLE/amd64 using sources of stable/14 as of June, 11. The upgrade process went just fine but after rebo= ot start of devd took over 17.6 minutes, then system proceeded to boot normally and now runs just fine. This is UFS2-only system. CPU: Intel(R) Xeon(R) CPU X3470 @ 2.93GHz (2926.10-MHz K8-class CPU) Mem: 1716M Active, 2244M Inact, 690M Wired, 326M Buf, 11G Free Swap: 14G Total, 14G Free I have a custom rc.d script that starts before devd and creates over 800 vl= ans with integrated bge0 interface as a parent.=20 For a test, in multiuser mode I destroy all vlans, stop devd, rerun my scri= pt to recreate all vlans and use "service devd start", and the problem reprodu= ces and mentioned command takes same long time again. During that time, "top -SHPz" shows: PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND 12 root -60 - 0B 336K CPU1 1 22:53 97,01% intr{irq= 16: ehci0 bge0} 0 root 8 - 0B 720K CPU3 3 0:01 5,27% kernel{netlink_socket (PID} 2 root -60 - 0B 64K WAIT 2 0:12 0,77% clock{cl= ock (0)} 15765 root 68 0 21M 7808K wait 1 0:00 0,11% devd Note, there are less than 200 kilobytes/s of traffic over bge0 meantime. Af= ter "service devd start" finishes, the load of "intr{irq16: ehci0 bge0}" drops = to about zero. More details follow. --=20 You are receiving this mail because: You are the assignee for the bug.=
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