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<body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [GM45/ILK/BYT/BDW]igt/gem_concurrent_blit/cpu-overwrite-source causes OOM killer"
href="https://bugs.freedesktop.org/show_bug.cgi?id=72255">bug 72255</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>REOPENED
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [GM45/ILK/BYT/BDW]igt/gem_concurrent_blit/cpu-overwrite-source causes OOM killer"
href="https://bugs.freedesktop.org/show_bug.cgi?id=72255#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [GM45/ILK/BYT/BDW]igt/gem_concurrent_blit/cpu-overwrite-source causes OOM killer"
href="https://bugs.freedesktop.org/show_bug.cgi?id=72255">bug 72255</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>A little printf goes a long way...
root@baytrail-t:/usr/src/intel-gpu-tools/tests# ./gem_concurrent_blit
IGT-Version: 1.5-gb5109e6 (i686) (Linux: 3.13.0-rc8+ i686)
using 2x512 buffers, each 1MiB
Subtest prw-overwrite-source: SUCCESS
Subtest prw-early-read: SUCCESS
Subtest prw-gpu-read-after-write: SUCCESS
Subtest prw-overwrite-source-interruptible: SUCCESS
Subtest prw-early-read-interruptible: SUCCESS
Subtest prw-gpu-read-after-write-interruptible: SUCCESS
Subtest prw-overwrite-source-forked: SUCCESS
Subtest prw-early-read-forked: SUCCESS
Subtest prw-gpu-read-after-write-forked: SUCCESS
Subtest cpu-overwrite-source: SUCCESS
Subtest cpu-early-read: SUCCESS
Subtest cpu-gpu-read-after-write: SUCCESS
Subtest cpu-overwrite-source-interruptible: SUCCESS
Subtest cpu-early-read-interruptible: SUCCESS
Subtest cpu-gpu-read-after-write-interruptible: SUCCESS
Subtest cpu-overwrite-source-forked: SUCCESS
Subtest cpu-early-read-forked: SUCCESS
Subtest cpu-gpu-read-after-write-forked: SUCCESS
Subtest gtt-overwrite-source: SUCCESS
Subtest gtt-early-read: SUCCESS
Subtest gtt-gpu-read-after-write: SUCCESS
Subtest gtt-overwrite-source-interruptible: SUCCESS
Subtest gtt-early-read-interruptible: SUCCESS
Subtest gtt-gpu-read-after-write-interruptible: SUCCESS
Subtest gtt-overwrite-source-forked: SUCCESS
Subtest gtt-early-read-forked: SUCCESS
Subtest gtt-gpu-read-after-write-forked: SUCCESS
cat /proc/meminfo
MemTotal: 1929304 kB
MemFree: 1613484 kB
Buffers: 15236 kB
Cached: 270856 kB
SwapCached: 0 kB
Active: 118092 kB
Inactive: 175144 kB
Active(anon): 7200 kB
Inactive(anon): 8656 kB
Active(file): 110892 kB
Inactive(file): 166488 kB
Unevictable: 0 kB
Mlocked: 0 kB
HighTotal: 1022332 kB
HighFree: 891840 kB
LowTotal: 906972 kB
LowFree: 721644 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 7164 kB
Mapped: 1896 kB
Shmem: 8692 kB
Slab: 14772 kB
SReclaimable: 8096 kB
SUnreclaim: 6676 kB
KernelStack: 648 kB
PageTables: 352 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 964652 kB
Committed_AS: 52136 kB
VmallocTotal: 122880 kB
VmallocUsed: 14076 kB
VmallocChunk: 93428 kB
AnonHugePages: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
DirectMap4k: 23544 kB
DirectMap4M: 884736 kB
commit 0b4c33f62c2d4a61b0b5e9184524c8ca273400b1
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Sun Jan 26 14:36:32 2014 +0000
igt/gem_concurrent_blit: Scale resource usage to RAM correctly
Note that we use twice the number of buffers, and so we need to restrict
num_buffers appropriately to fit within RAM.
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [GM45/ILK/BYT/BDW]igt/gem_concurrent_blit/cpu-overwrite-source causes OOM killer"
href="show_bug.cgi?id=72255">https://bugs.freedesktop.org/show_bug.cgi?id=72255</a>
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>></pre>
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