Date: Sat, 30 May 2020 22:10:37 +0200 From: "Ronald Klop" <ronald-lists@klop.ws> To: "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org>, "Miroslav Lachman" <000.fbsd@quip.cz> Subject: Re: ZFS on FreeBSD 11.3 slower than 10.4 Message-ID: <op.0lf4zzlhkndu52@sjakie> In-Reply-To: <1ff455a5-d111-86fa-ceb1-1021b6d9a5b6@quip.cz> References: <1ff455a5-d111-86fa-ceb1-1021b6d9a5b6@quip.cz>
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On Sat, 23 May 2020 21:44:03 +0200, Miroslav Lachman <000.fbsd@quip.cz> wrote: > I upgraded my old desktop computer few month ago from old 10.4 based > PC-BSD to stock FreeBSD 11.3. It uses single 2TB HDD 7200rpm. > My problem is that upgraded version is really slow and some desktop > applications are very lagging (playing multimedia is interrupted for a > fraction of seconds) when there is heavy filesystem activity. > > I am using zfsnap2 for taking snapshots periodically and when there is > enough snapshots zfs destroy is called. In this time the user experience > is terrible. Starting new application like browser or even something > much smaller takes minutes. The old version based on FreeBSD 10.4 > behaves much better. I used the old version for years and never have > problems with interrupted multimedia playback. > > Are there some sysctls to tune to get better desktop interactivity in > heavy filesystem operations like zfs destroy, pkg check or other "find" > periodic scripts? > > Kind regards > Miroslav Lachman How full is the disk? ZFS has poor performance if the disk becomes full. What is in /etc/sysctl.conf and /boot/loader.conf? And did you try to boot 12.1 and did it have the same behavious? Regards, Ronald.
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