[Bug 95427] gem_userptr_blits@mlocked-* should skip due to memory pre-condition not met

[Bug 95427] gem_userptr_blits@mlocked-* should skip due to memory pre-condition not met

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https://bugs.freedesktop.org/show_bug.cgi?id=95427

cprigent <christophe.prigent@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         QA Contact|intel-gfx-bugs@lists.freede |
                   |sktop.org                   |
          Component|DRM/Intel                   |IGT
           Assignee|intel-gfx-bugs@lists.freede |dri-devel@lists.freedesktop
                   |sktop.org                   |.org

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[Bug 95427] gem_userptr_blits@mlocked-* should skip due to memory pre-condition not met

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https://bugs.freedesktop.org/show_bug.cgi?id=95427

--- Comment #2 from Humberto Israel Perez Rodriguez <humberto.i.perez.rodriguez@intel.com> ---
even with 16GB of ram in APL the following tests keeps failing :

Tests cases
=============
igt@gem_userptr_blits@mlocked-unsync-normal
igt@gem_userptr_blits@mlocked-normal-sync


output :
============
IGT-Version: 1.15-g3ce58b6 (x86_64) (Linux:
4.7.0-rc2-drm-intel-nightly-ww24-commit-55d1291+ x86_64)
(gem_userptr_blits:1332) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_userptr_blits:1332) ioctl-wrappers-DEBUG: Test requirement passed: !(ret
== ENODEV && (flags & LOCAL_I915_USERPTR_UNSYNCHRONIZED) == 0 && !read_only)
(gem_userptr_blits:1332) DEBUG: Test requirement passed: !(ret == 0)
Aperture size is 268435456 MiB
Total RAM is 15,884 MiB
Not enough RAM to run test, reducing buffer count.
Testing unsynchronized mappings...
(gem_userptr_blits:1332) igt-core-DEBUG: Starting subtest:
mlocked-unsync-normal
(gem_userptr_blits:1332) intel-os-DEBUG: Checking 256 surfaces of size
1,048,576 bytes (total 268,566,528) against RAM
(gem_userptr_blits:1332) intel-os-DEBUG: Test requirement passed:
__intel_check_memory(count, size, mode, &required, &total)
(gem_userptr_blits:1332) igt-core-DEBUG: Test requirement passed:
!igt_run_in_simulation()
(gem_userptr_blits:1332) DEBUG: Test requirement passed: pin > sz
(gem_userptr_blits:1332) DEBUG: Pinning [15,428, 15,684] MiB
Killed

relevant kernel messages:
=============================
kern  :err   : [Sat Jun 18 16:18:55 2016] 32 and 0 pages still available in the
bound and unbound GPU page lists.
kern  :err   : [Sat Jun 18 16:18:55 2016] Out of memory: Kill process 1348
(gem_userptr_bli) score 1762 or sacrifice child
kern  :err   : [Sat Jun 18 16:18:55 2016] Killed process 1348 (gem_userptr_bli)
total-vm:16169932kB, anon-rss:15988692kB, file-rss:4kB, shmem-rss:0kB


looks like that is something wrong in the test itself of the test needs much
more memory ?

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[Bug 95427] gem_userptr_blits@mlocked-* should skip due to memory pre-condition not met

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https://bugs.freedesktop.org/show_bug.cgi?id=95427

--- Comment #3 from Emil Velikov <emil.l.velikov@gmail.com> ---
Guys have you actually looked at the following line ?
Aperture size is 268435456 MiB -- That is 256 TiB !!!

That's rather impossible amount if you ask me. So there's either a bug in IGT's
gem_aperture_size() or one of the two ioctls (I915_GEM_CONTEXT_GETPARAM
I915_GEM_GET_APERTURE) that it uses.

With a couple of print statements you should be able to quickly track the exact
offender. Good luck !

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[Bug 95427] gem_userptr_blits@mlocked-* should skip due to memory pre-condition not met

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https://bugs.freedesktop.org/show_bug.cgi?id=95427

--- Comment #4 from cprigent <christophe.prigent@intel.com> ---
(In reply to Emil Velikov from comment #3)
> Guys have you actually looked at the following line ?
> Aperture size is 268435456 MiB -- That is 256 TiB !!!
> 
> That's rather impossible amount if you ask me. So there's either a bug in
> IGT's gem_aperture_size() or one of the two ioctls
> (I915_GEM_CONTEXT_GETPARAM I915_GEM_GET_APERTURE) that it uses.
> 
> With a couple of print statements you should be able to quickly track the
> exact offender. Good luck !

Yes, we saw it. The bug is reported to IGT (not to DRM/Intel). We propose the
test should skip.

I just checked on our IVB platform with 32 GB of memory. Looks like we would
need now 2 TB.

root@IVB102:/opt/X11R7/src/intel-gpu-tools/tests# ./gem_userptr_blits
--run-subtest mlocked-normal-sync
IGT-Version: 1.15-ge3abb20 (x86_64) (Linux: 4.7.0-nightly+ x86_64)
Aperture size is 2048 MiB
Total RAM is 31,945 MiB
Testing unsynchronized mappings...
Testing synchronized mappings...
Killed

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[Bug 95427] gem_userptr_blits@mlocked-* should skip due to memory pre-condition not met

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https://bugs.freedesktop.org/show_bug.cgi?id=95427

--- Comment #5 from Chris Wilson <chris@chris-wilson.co.uk> ---
(In reply to Emil Velikov from comment #3)
> Guys have you actually looked at the following line ?
> Aperture size is 268435456 MiB -- That is 256 TiB !!!
> 
> That's rather impossible amount if you ask me. So there's either a bug in
> IGT's gem_aperture_size() or one of the two ioctls

It is correct. The GTT size is 1<<48 bytes.

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[Bug 95427] gem_userptr_blits@mlocked-* should skip due to memory pre-condition not met

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https://bugs.freedesktop.org/show_bug.cgi?id=95427

--- Comment #6 from Chris Wilson <chris@chris-wilson.co.uk> ---
(In reply to cprigent from comment #4)
> (In reply to Emil Velikov from comment #3)
> > Guys have you actually looked at the following line ?
> > Aperture size is 268435456 MiB -- That is 256 TiB !!!
> > 
> > That's rather impossible amount if you ask me. So there's either a bug in
> > IGT's gem_aperture_size() or one of the two ioctls
> > (I915_GEM_CONTEXT_GETPARAM I915_GEM_GET_APERTURE) that it uses.
> > 
> > With a couple of print statements you should be able to quickly track the
> > exact offender. Good luck !
> 
> Yes, we saw it. The bug is reported to IGT (not to DRM/Intel). We propose
> the test should skip.

Why? The test only allocates enough to fill RAM and then tests that the buffers
are evicted for memory pressure. The messages are nothing to do with this test,
just spam.

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[Bug 95427] gem_userptr_blits@mlocked-* should skip due to memory pre-condition not met

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https://bugs.freedesktop.org/show_bug.cgi?id=95427

cprigent <christophe.prigent@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|dri-devel@lists.freedesktop |intel-gfx-bugs@lists.freede
                   |.org                        |sktop.org
      i915 platform|                            |BDW
         QA Contact|                            |intel-gfx-bugs@lists.freede
                   |                            |sktop.org
          Component|IGT                         |DRM/Intel

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