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    <body><span class="vcard"><a class="email" href="mailto:elizabethx.de.la.torre.mena@intel.com" title="Elizabeth <elizabethx.de.la.torre.mena@intel.com>"> <span class="fn">Elizabeth</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [IGT][All] Performance degradation due to fence contention with igt/gem_fence_upload"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=80079">bug 80079</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;">i915 platform</td>
           <td>ALL
           </td>
           <td>CNL, CFL, KBL, SKL, BDW, HSW, IVB, SNB
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [IGT][All] Performance degradation due to fence contention with igt/gem_fence_upload"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=80079#c88">Comment # 88</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [IGT][All] Performance degradation due to fence contention with igt/gem_fence_upload"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=80079">bug 80079</a>
              from <span class="vcard"><a class="email" href="mailto:elizabethx.de.la.torre.mena@intel.com" title="Elizabeth <elizabethx.de.la.torre.mena@intel.com>"> <span class="fn">Elizabeth</span></a>
</span></b>
        <pre>This is still valid with the tests and in all the platforms:

igt@gem_fence_upload@performance
igt@gem_fence_upload@thread-contention
igt@gem_fence_upload@thread-performance-write
igt@gem_fence_upload@wc-contention

Results for igt@gem_fence_upload@wc-contention
Result: fail
Out     
IGT-Version: 1.22-g2e92134 (x86_64) (Linux:
4.16.0-rc5-drm-intel-qa-ww11-commit-e867298+ x86_64)
Contended upload rate for 1 linear threads/wc:  698.934MiB/s
Contended upload rate for 1 tiled threads/wc:   723.066MiB/s
Contended upload rate for 2 linear threads/wc:  351.208MiB/s
Contended upload rate for 2 tiled threads/wc:   403.104MiB/s
Contended upload rate for 4 linear threads/wc:  217.407MiB/s
Contended upload rate for 4 tiled threads/wc:   217.127MiB/s
Contended upload rate for 8 linear threads/wc:  230.568MiB/s
Contended upload rate for 8 tiled threads/wc:   251.303MiB/s
Contended upload rate for 16 linear threads/wc: 353.497MiB/s
Contended upload rate for 16 tiled threads/wc:  263.751MiB/s
Contended upload rate for 32 linear threads/wc: 229.063MiB/s
Contended upload rate for 32 tiled threads/wc:  263.710MiB/s
Contended upload rate for 64 linear threads/wc: 230.086MiB/s
Contended upload rate for 64 tiled threads/wc:  240.488MiB/s
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [__real_main389+0xca7]
  #2 [main+0x23]
  #3 [__libc_start_main+0xf1]
  #4 [_start+0x29]
  #5 [<unknown>+0x29]
Subtest wc-contention: FAIL (16.453s)
Err     
(gem_fence_upload:8700) CRITICAL: Test assertion failure function
wc_contention, file gem_fence_upload.c:385:
(gem_fence_upload:8700) CRITICAL: Failed assertion: linear[1] > 0.75 *
linear[0]
Subtest wc-contention failed.
**** DEBUG ****
(gem_fence_upload:8700) drmtest-DEBUG: Test requirement passed: !(fd<0)
(gem_fence_upload:8700) igt-debugfs-DEBUG: Opening debugfs directory
'/sys/kernel/debug/dri/0'
(gem_fence_upload:8700) DEBUG: Test requirement passed: gem_mmap__has_wc(fd)
(gem_fence_upload:8700) DEBUG: Test requirement passed: num_fences > 0
(gem_fence_upload:8700) INFO: Contended upload rate for 1 linear threads/wc:   
698.934MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 1 tiled threads/wc:    
723.066MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 2 linear threads/wc:   
351.208MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 2 tiled threads/wc:    
403.104MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 4 linear threads/wc:   
217.407MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 4 tiled threads/wc:    
217.127MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 8 linear threads/wc:   
230.568MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 8 tiled threads/wc:    
251.303MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 16 linear threads/wc:  
353.497MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 16 tiled threads/wc:   
263.751MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 32 linear threads/wc:  
229.063MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 32 tiled threads/wc:   
263.710MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 64 linear threads/wc:  
230.086MiB/s
(gem_fence_upload:8700) INFO: Contended upload rate for 64 tiled threads/wc:   
240.488MiB/s
(gem_fence_upload:8700) CRITICAL: Test assertion failure function
wc_contention, file gem_fence_upload.c:385:
(gem_fence_upload:8700) CRITICAL: Failed assertion: linear[1] > 0.75 *
linear[0]
(gem_fence_upload:8700) igt-core-INFO: Stack trace:
(gem_fence_upload:8700) igt-core-INFO:   #0 [__igt_fail_assert+0x101]
(gem_fence_upload:8700) igt-core-INFO:   #1 [__real_main389+0xca7]
(gem_fence_upload:8700) igt-core-INFO:   #2 [main+0x23]
(gem_fence_upload:8700) igt-core-INFO:   #3 [__libc_start_main+0xf1]
(gem_fence_upload:8700) igt-core-INFO:   #4 [_start+0x29]
(gem_fence_upload:8700) igt-core-INFO:   #5 [<unknown>+0x29]
****  END  ****</pre>
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