Date: Fri, 05 Jun 2020 22:57:15 +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.0lra5p1nkndu52@sjakie> In-Reply-To: <8c64cc48-7d79-7591-8bb5-67f3127463b7@quip.cz> References: <1ff455a5-d111-86fa-ceb1-1021b6d9a5b6@quip.cz> <op.0lf4zzlhkndu52@sjakie> <8c64cc48-7d79-7591-8bb5-67f3127463b7@quip.cz>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sat, 30 May 2020 23:29:48 +0200, Miroslav Lachman <000.fbsd@quip.cz> wrote: > On 2020-05-30 22:10, Ronald Klop wrote: >> 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? > > >> 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? > > It is currently 77% full. But it is the same pool with the same capacity > as with 10.4. > > I didn't try 12.1, I need to stay on 11.3 for now. > > ## loader.conf > > nvidia_load="YES" > drm_load="YES" > drm2_load="YES" > iicbus_load="YES" > vboxdrv_load="YES" > crypto_load="YES" > aesni_load="YES" > geom_eli_load="YES" > vfs.zfs.arc_max="1024M" > zfs_load="YES" > iicbus_load="YES" > > ## sysctl.conf > > kern.coredump=0 > kern.maxfiles=49312 > vfs.usermount=1 > security.jail.allow_raw_sockets=1 > security.jail.sysvipc_allowed=1 > security.jail.mount_allowed=1 > security.jail.chflags_allowed=1 > hw.syscons.bell=0 > kern.sched.preempt_thresh=224 > kern.ipc.shm_allow_removed=1 > kern.shutdown.poweroff_delay=500 > kern.bootfile=/boot/kernel/kernel > hw.usb.no_shutdown_wait=1 > hw.snd.default_unit=3 > kern.sched.interact=10 > vfs.aio.max_aio_per_proc=256 > vfs.aio.max_aio_queue=8192 > vfs.aio.max_aio_queue_per_proc=1024 > vfs.aio.max_buf_aio=64 > net.local.stream.recvspace=65536 > net.local.stream.sendspace=65536 > > > loader.conf and sysctl.conf are the same for 10.4 and 11.3 but 11.3 is > much much slower when it comes to heavy IO like "find" daily periodic > scripts, zfs destroy, starting new applications etc. > > > Kind regards > Miroslav Lachman I don't have anything I see which I'm sure will fix things, but you could try to remove/comment some of these sysctls to see if 11.3 has better defaults now. kern.sched.preempt_thresh, kern.maxfiles, kern.sched.interact, vfs.aio.* What kind of machine is it? CPU, MEM? What does gstat say about the saturation of the disk? Regards, Ronald.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?op.0lra5p1nkndu52>