Date: Thu, 07 Jan 2021 18:35:23 +0100 From: Mathias Picker <Mathias.Picker@virtual-earth.de> To: freebsd-x11@freebsd.org Subject: Sloow blender on FreeBSD (vs Ubuntu) Message-ID: <86mtxk8xb8.fsf@virtual-earth.de>
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Hi all, the last days I tried to get blender into working state on a 2nd=20 gen Thinkpad X1 Yoga. tl;dr blender is stuttering and jerky on my X1 running an I7-8550U /=20 UHD620 (4-core, 2/4Ghz) and FreeBSD, while it works like a charm=20 on my Surface Go Pentium Gold 4415Y/HD615 (2-core, 1.6Ghz) with=20 Ubuntu. This is both on 12-STABLE and -CURRENT. It=E2=80=99s a bit better on=20 -CURRENT, but still horrible. Is there any way to speed blender up on FreeBSD? Long version: I wanted to try out blenders Grease Pencil, up until now I only=20 used blender for video editing. GP or rotating 3D-Scenes in blender 2.90 on 12-STABLE was=20 abysmally slow and crashed repeatedly after a few strokes with=20 grease pencil or a few minutes work in the 3D-view with: Jan 4 23:04:17 Danton kernel: drmn0: GPU HANG: ecode=20 9:1:0x87f99eb9, in blender [100824], hang on rcs0 Jan 4 23:04:17 Danton kernel: drmn0: Resetting rcs0 for hang on=20 rcs0 The GPU reset did not work, machine hangs, reboot via ssh. Recompiled blender, tried older version, all with the same result,=20 although 2.8x seemed a bit faster, but still slow & crashes. Searched the web, found similar problems by others on Linux,=20 suggested KMS update. So I switched to -CURRENT with drm-current-kmod (5.4 instead of=20 4.5) Same GPU hang, but here the reset works. Performance *slightly*=20 better, but every hang takes about 2 sec, no way to work with=20 this. Updating X1 bios - now the error did not happen for quite some=20 time.=20 But still, quite slow. Stuttering when rotating the default cube=20 in simple solid or wireframe mode. On a I7-8550U running full=20 speed (hwpstate_intel with epp=3D0), cpu freq between 2500 and=20 3900). Installed mesa-devel=EF=BC=9Athe GPU hang is back. Recompiled blender to 2.91.0_2, mesa-devel, drm everything. No=20 more GPU hang for now, but still stuttering motions, Grease Pencil=20 strokes hang back 1-2 seconds from my stylus. Then I tried my 1st gen Surface Go 8Gb running Ubuntu: Blender is=20 blazing fast for these simple tasks. Fluid rotation, allmost real=20 time grease pencil=EF=BC=9AWTF? This is an i7-8550U quad core running 2/4Ghz with an UHD620 GPU=20 against a Pentium Gold, and the Pentium wins hands down? I would really *love* to get blender up even only to Pentium=20 speed. Blender with simple models in solid mode should *fly* on my=20 X1, same with a few Grease Pencil strokes=E2=80=A6 Any ideas, help, suggestion? Thanks, Mathias --=20 Mathias Picker=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20 Gesch=C3=A4ftsf=C3=BChrer Mathias.Picker@virtual-earth.de virtual earth Gesellschaft f=C3=BCr Wissens re/pr=C3=A4 sentation mbH http://www.virtual-earth.de/ HRB126870 support@virtual-earth.de Westendstr. 142 089 / 1250 3943=20=20=20=20=20=20=20=20=20=20=20=20
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