Date: Sun, 11 Mar 2018 20:30:15 -0700 From: Mark Millard <marklmi26-fbsd@yahoo.com> To: jroberson@jroberson.net, freebsd-current@freebsd.org Cc: "O. Hartmann" <ohartmann@walstatt.org> Subject: Re: Strange ARC/Swap/CPU on yesterday's -CURRENT Message-ID: <FD75495D-AC03-4037-9C62-5A3AC588317C@yahoo.com>
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As I understand, O. Hartmann's report ( ohartmann at walstatt.org ) in: = https://lists.freebsd.org/pipermail/freebsd-current/2018-March/068806.html= includes a system with a completely non-ZFS context: UFS only. Quoting = that part: > This is from a APU, no ZFS, UFS on a small mSATA device, the APU = (PCenigine) works as a > firewall, router, PBX): >=20 > last pid: 9665; load averages: 0.13, 0.13, 0.11 > up 3+06:53:55 00:26:26 19 processes: 1 running, 18 sleeping CPU: = 0.3% user, 0.0% > nice, 0.2% system, 0.0% interrupt, 99.5% idle Mem: 27M Active, 6200K = Inact, 83M > Laundry, 185M Wired, 128K Buf, 675M Free Swap: 7808M Total, 2856K = Used, 7805M Free > [...] >=20 > The APU is running CURRENT ( FreeBSD 12.0-CURRENT #42 r330608: Wed Mar = 7 16:55:59 CET > 2018 amd64). Usually, the APU never(!) uses swap, now it is starting = to swap like hell > for a couple of days and I have to reboot it failty often. Unless this is unrelated, it would suggest that ZFS and its ARC need not be involved. Would what you are investigating relative to your "NUMA and concurrency related work" fit with such a non-ZFS (no-ARC) context? =3D=3D=3D Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)
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