https://bugs.freedesktop.org/show_bug.cgi?id=99426

Bug ID: 99426 Summary: gem_mmap_gtt swap tests are too long - perf: interrupt took too long Product: DRI Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: IGT Assignee: dri-devel@lists.freedesktop.org Reporter: christophe.prigent@intel.com

Tested on BDW, SNB, SKL, IVB, HSW, BYT with SW config:

Kernel: 4.10.0-rc3 ea7e3e5 branch drm-tip from https://cgit.freedesktop.org/drm-tip commit ea7e3e5c99e316fb6876399f9b32b2372e45c4af Author: Joonas Lahtinen joonas.lahtinen@linux.intel.com Date: Mon Jan 9 16:46:47 2017 +0200 drm-tip: 2017y-01m-09d-14h-45m-54s UTC integration manifest

libdrm-2.4.74-21 geebefaf from git://anongit.freedesktop.org/mesa/drm mesa: mesa-13.0.2 c9e993b from git://anongit.freedesktop.org/mesa/mesa cairo 1.15.4 9fe6683 from git://anongit.freedesktop.org/cairo xorg-server-1.19.0-38 9d32b71 from git://git.freedesktop.org/git/xorg/xserver xf86-video-intel 2.99.917-747 028c946 from git://git.freedesktop.org/git/xorg/driver/xf86-video-intel libva-1.7.2-45 acbc209 from git://git.freedesktop.org/git/vaapi/libva vaapi-intel-driver: 1.7.2-216 70770f9 from git://git.freedesktop.org/git/vaapi/intel-driver intel-gpu-tools-1.17 e2eefcc from http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git

Steps: ------- 1. Execute IGT test manually (no timeout is used): ./gem_mmap_gtt --r swap-copy 2. Wait 100 hours

Actual results: ---------------- 2. Test is still not finished after 100 hours (IGT is still running - DUT is not freezed) dmesg shows the same logs on all platforms, example on SKL: [ 151.322722] [IGT] gem_mmap_gtt: executing [ 151.353973] [IGT] gem_mmap_gtt: starting subtest swap-copy [ 151.354090] gem_mmap_gtt (31952): drop_caches: 4 [ 4843.205005] perf: interrupt took too long (2540 > 2500), lowering kernel.perf_event_max_sample_rate to 78500 [ 6383.794279] perf: interrupt took too long (3202 > 3175), lowering kernel.perf_event_max_sample_rate to 62250 [ 9271.093175] perf: interrupt took too long (4037 > 4002), lowering kernel.perf_event_max_sample_rate to 49500 [14046.280647] perf: interrupt took too long (5090 > 5046), lowering kernel.perf_event_max_sample_rate to 39250 [22889.758381] perf: interrupt took too long (6365 > 6362), lowering kernel.perf_event_max_sample_rate to 31250 [50315.915256] perf: interrupt took too long (7982 > 7956), lowering kernel.perf_event_max_sample_rate to 25000

Expected results: ----------------- 2. Test is not so long

Info: ----- I can't attach dmesg due to its size There is no log from IGT