[igt-dev] [PATCH i-g-t] i915/gem_exec_big: 128MiB not enough slack? Let out the rope!

[igt-dev] [PATCH i-g-t] i915/gem_exec_big: 128MiB not enough slack? Let out the rope!

[Chris Wilson]

Even with 128MiB reserved for other use, a single pass of gem_exec_big
runs out of memory. Give in and halve our batch size, that has to be
enough slack! As to why it keeps on failing, is left as an exercise to
the reader -- we have to solve the mm/ mystery one day, as eventually it
will be our only remaining source of bugs!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
---
 tests/i915/gem_exec_big.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/i915/gem_exec_big.c b/tests/i915/gem_exec_big.c
index 015f59e29..440136ee8 100644
--- a/tests/i915/gem_exec_big.c
+++ b/tests/i915/gem_exec_big.c
@@ -260,7 +260,7 @@ static void single(int i915)
 	uint32_t handle;
 	void *ptr;
 
-	batch_size = (intel_get_avail_ram_mb() - 128) << 20; /* CI slack */
+	batch_size = (intel_get_avail_ram_mb() / 2) << 20; /* XXX CI slack? */
 	limit = gem_aperture_size(i915) - (256 << 10); /* low pages reserved */
 	if (!gem_uses_full_ppgtt(i915))
 		limit = 3 * limit / 4;
-- 
2.20.1

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[igt-dev] ✓ Fi.CI.BAT: success for i915/gem_exec_big: 128MiB not enough slack? Let out the rope!

[Patchwork]

== Series Details ==

Series: i915/gem_exec_big: 128MiB not enough slack? Let out the rope!
URL   : https://patchwork.freedesktop.org/series/58602/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_5818 -> IGTPW_2715
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://patchwork.freedesktop.org/api/1.0/series/58602/revisions/1/mbox/

Known issues
------------

  Here are the changes found in IGTPW_2715 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_exec_suspend@basic-s3:
    - fi-blb-e6850:       PASS -> INCOMPLETE [fdo#107718]

  * igt@i915_selftest@live_contexts:
    - fi-skl-gvtdvm:      PASS -> DMESG-FAIL [fdo#110235 ]

  * igt@i915_selftest@live_uncore:
    - fi-ivb-3770:        PASS -> DMESG-FAIL [fdo#110210]

  * igt@kms_busy@basic-flip-b:
    - fi-gdg-551:         PASS -> FAIL [fdo#103182]

  * igt@kms_frontbuffer_tracking@basic:
    - fi-byt-clapper:     PASS -> FAIL [fdo#103167]

  
#### Possible fixes ####

  * igt@i915_pm_rpm@basic-pci-d3-state:
    - fi-hsw-4770:        SKIP [fdo#109271] -> PASS +2

  * igt@kms_pipe_crc_basic@read-crc-pipe-a-frame-sequence:
    - fi-byt-clapper:     FAIL [fdo#103191] / [fdo#107362] -> PASS

  
  [fdo#103167]: https://bugs.freedesktop.org/show_bug.cgi?id=103167
  [fdo#103182]: https://bugs.freedesktop.org/show_bug.cgi?id=103182
  [fdo#103191]: https://bugs.freedesktop.org/show_bug.cgi?id=103191
  [fdo#107362]: https://bugs.freedesktop.org/show_bug.cgi?id=107362
  [fdo#107718]: https://bugs.freedesktop.org/show_bug.cgi?id=107718
  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [fdo#110210]: https://bugs.freedesktop.org/show_bug.cgi?id=110210
  [fdo#110235 ]: https://bugs.freedesktop.org/show_bug.cgi?id=110235 


Participating hosts (45 -> 40)
------------------------------

  Missing    (5): fi-kbl-soraka fi-ilk-m540 fi-hsw-4200u fi-byt-squawks fi-bsw-cyan 


Build changes
-------------

    * IGT: IGT_4905 -> IGTPW_2715

  CI_DRM_5818: de0e80842f3d103996e99cfe27f999690c2ee06e @ git://anongit.freedesktop.org/gfx-ci/linux
  IGTPW_2715: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2715/
  IGT_4905: a350b9f9f606296b1599c3617c8530a8985709e2 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2715/
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[igt-dev] ✓ Fi.CI.IGT: success for i915/gem_exec_big: 128MiB not enough slack? Let out the rope!

[Patchwork]

== Series Details ==

Series: i915/gem_exec_big: 128MiB not enough slack? Let out the rope!
URL   : https://patchwork.freedesktop.org/series/58602/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_5818_full -> IGTPW_2715_full
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://patchwork.freedesktop.org/api/1.0/series/58602/revisions/1/mbox/

Known issues
------------

  Here are the changes found in IGTPW_2715_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_bad_reloc@negative-reloc-lut-bsd1:
    - shard-glk:          NOTRUN -> SKIP [fdo#109271] +3

  * igt@gem_exec_schedule@preempt-vebox:
    - shard-hsw:          NOTRUN -> SKIP [fdo#109271] +9

  * igt@gem_softpin@noreloc-s3:
    - shard-apl:          PASS -> DMESG-WARN [fdo#108566]

  * igt@i915_pm_rpm@modeset-lpsp-stress-no-wait:
    - shard-kbl:          NOTRUN -> SKIP [fdo#109271] +22

  * igt@kms_atomic_transition@4x-modeset-transitions-fencing:
    - shard-apl:          NOTRUN -> SKIP [fdo#109271] / [fdo#109278]

  * igt@kms_busy@basic-flip-d:
    - shard-hsw:          NOTRUN -> SKIP [fdo#109271] / [fdo#109278]

  * igt@kms_busy@extended-modeset-hang-newfb-render-b:
    - shard-hsw:          PASS -> DMESG-WARN [fdo#110222]
    - shard-snb:          PASS -> DMESG-WARN [fdo#110222]

  * igt@kms_busy@extended-modeset-hang-newfb-with-reset-render-f:
    - shard-kbl:          NOTRUN -> SKIP [fdo#109271] / [fdo#109278] +2

  * igt@kms_busy@extended-pageflip-hang-newfb-render-c:
    - shard-snb:          NOTRUN -> SKIP [fdo#109271] / [fdo#109278] +13

  * igt@kms_color@pipe-b-degamma:
    - shard-glk:          NOTRUN -> FAIL [fdo#104782]

  * igt@kms_cursor_crc@cursor-64x64-dpms:
    - shard-kbl:          PASS -> FAIL [fdo#103232]
    - shard-apl:          PASS -> FAIL [fdo#103232]

  * igt@kms_frontbuffer_tracking@fbcpsr-2p-primscrn-indfb-plflip-blt:
    - shard-snb:          NOTRUN -> SKIP [fdo#109271] +106

  * igt@kms_frontbuffer_tracking@psr-2p-scndscrn-spr-indfb-draw-mmap-wc:
    - shard-apl:          NOTRUN -> SKIP [fdo#109271] +4

  * igt@kms_plane_alpha_blend@pipe-a-constant-alpha-max:
    - shard-kbl:          NOTRUN -> FAIL [fdo#108145]

  * igt@kms_plane_alpha_blend@pipe-c-alpha-7efc:
    - shard-kbl:          NOTRUN -> FAIL [fdo#108145] / [fdo#108590]

  * igt@kms_plane_scaling@pipe-c-scaler-with-pixel-format:
    - shard-glk:          PASS -> SKIP [fdo#109271] / [fdo#109278]

  * igt@kms_setmode@basic:
    - shard-apl:          PASS -> FAIL [fdo#99912]
    - shard-snb:          NOTRUN -> FAIL [fdo#99912]

  
#### Possible fixes ####

  * {igt@gem_exec_big@single}:
    - shard-glk:          FAIL -> PASS
    - shard-apl:          INCOMPLETE [fdo#103927] -> PASS

  * igt@kms_busy@extended-modeset-hang-newfb-render-a:
    - shard-hsw:          DMESG-WARN [fdo#110222] -> PASS +2
    - shard-snb:          DMESG-WARN [fdo#110222] -> PASS

  * igt@kms_busy@extended-modeset-hang-newfb-render-c:
    - shard-kbl:          DMESG-WARN [fdo#110222] -> PASS

  * igt@kms_flip@flip-vs-suspend:
    - shard-hsw:          INCOMPLETE [fdo#103540] -> PASS +1

  * igt@kms_flip@flip-vs-suspend-interruptible:
    - shard-kbl:          INCOMPLETE [fdo#103665] -> PASS +1

  * {igt@kms_plane@pixel-format-pipe-c-planes}:
    - shard-glk:          SKIP [fdo#109271] -> PASS

  * {igt@kms_plane@plane-position-covered-pipe-b-planes}:
    - shard-glk:          FAIL [fdo#110038] -> PASS
    - shard-kbl:          FAIL [fdo#110038] -> PASS
    - shard-apl:          FAIL [fdo#110038] -> PASS

  * igt@kms_rotation_crc@multiplane-rotation-cropping-bottom:
    - shard-kbl:          DMESG-FAIL [fdo#105763] -> PASS

  * igt@kms_setmode@basic:
    - shard-hsw:          FAIL [fdo#99912] -> PASS
    - shard-kbl:          FAIL [fdo#99912] -> PASS

  * igt@kms_vblank@pipe-a-ts-continuation-modeset-hang:
    - shard-kbl:          FAIL [fdo#104894] -> PASS
    - shard-apl:          FAIL [fdo#104894] -> PASS

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [fdo#103232]: https://bugs.freedesktop.org/show_bug.cgi?id=103232
  [fdo#103540]: https://bugs.freedesktop.org/show_bug.cgi?id=103540
  [fdo#103665]: https://bugs.freedesktop.org/show_bug.cgi?id=103665
  [fdo#103927]: https://bugs.freedesktop.org/show_bug.cgi?id=103927
  [fdo#104782]: https://bugs.freedesktop.org/show_bug.cgi?id=104782
  [fdo#104894]: https://bugs.freedesktop.org/show_bug.cgi?id=104894
  [fdo#105763]: https://bugs.freedesktop.org/show_bug.cgi?id=105763
  [fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
  [fdo#108566]: https://bugs.freedesktop.org/show_bug.cgi?id=108566
  [fdo#108590]: https://bugs.freedesktop.org/show_bug.cgi?id=108590
  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [fdo#109278]: https://bugs.freedesktop.org/show_bug.cgi?id=109278
  [fdo#110038]: https://bugs.freedesktop.org/show_bug.cgi?id=110038
  [fdo#110222]: https://bugs.freedesktop.org/show_bug.cgi?id=110222
  [fdo#99912]: https://bugs.freedesktop.org/show_bug.cgi?id=99912


Participating hosts (10 -> 5)
------------------------------

  Missing    (5): shard-skl pig-hsw-4770r pig-glk-j5005 shard-iclb pig-skl-6260u 


Build changes
-------------

    * IGT: IGT_4905 -> IGTPW_2715
    * Piglit: piglit_4509 -> None

  CI_DRM_5818: de0e80842f3d103996e99cfe27f999690c2ee06e @ git://anongit.freedesktop.org/gfx-ci/linux
  IGTPW_2715: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2715/
  IGT_4905: a350b9f9f606296b1599c3617c8530a8985709e2 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_2715/
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Re: [Intel-gfx] [PATCH i-g-t] i915/gem_exec_big: 128MiB not enough slack? Let out the rope!

[Tvrtko Ursulin]

On 26/03/2019 18:57, Chris Wilson wrote:
> Even with 128MiB reserved for other use, a single pass of gem_exec_big
> runs out of memory. Give in and halve our batch size, that has to be
> enough slack! As to why it keeps on failing, is left as an exercise to
> the reader -- we have to solve the mm/ mystery one day, as eventually it
> will be our only remaining source of bugs!
> 
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
> ---
>   tests/i915/gem_exec_big.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tests/i915/gem_exec_big.c b/tests/i915/gem_exec_big.c
> index 015f59e29..440136ee8 100644
> --- a/tests/i915/gem_exec_big.c
> +++ b/tests/i915/gem_exec_big.c
> @@ -260,7 +260,7 @@ static void single(int i915)
>   	uint32_t handle;
>   	void *ptr;
>   
> -	batch_size = (intel_get_avail_ram_mb() - 128) << 20; /* CI slack */
> +	batch_size = (intel_get_avail_ram_mb() / 2) << 20; /* XXX CI slack? */
>   	limit = gem_aperture_size(i915) - (256 << 10); /* low pages reserved */
>   	if (!gem_uses_full_ppgtt(i915))
>   		limit = 3 * limit / 4;
> 

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Regards,

Tvrtko
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