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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2873/">https://reviewboard.asterisk.org/r/2873/</a>
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<p style="margin-top: 0;">On September 27th, 2013, 1:25 p.m. CDT, <b>rmudgett</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2873/diff/5/?file=46685#file46685line544" style="color: black; font-weight: bold; text-decoration: underline;">/branches/12/main/stasis.c</a>
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(Diff revision 5)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">static int dispatch_exec(void *data)</pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">541</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">ast_log</span><span class="p">(</span><span class="n">LOG_DEBUG</span><span class="p">,</span> <span class="s">"Dropping dispatch</span><span class="se">\n</span><span class="s">"</span><span class="p">);</span></pre></td>
<th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">542</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">ast_log</span><span class="p">(</span><span class="n">LOG_DEBUG</span><span class="p">,</span> <span class="s">"Dropping dispatch</span><span class="se">\n</span><span class="s">"</span><span class="p">);</span></pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">542</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="k">break</span><span class="p">;</span></pre></td>
<th bgcolor="#f0f0f0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font size="2">543</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="k">break</span><span class="p">;</span></pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">543</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="p">}</span></pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">544</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">545</font></th>
<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="n">ast_taskprocessor_push</span><span class="p">(</span><span class="n">sub</span><span class="o">-></span><span class="n">mailbox</span><span class="p">,</span> <span class="n">dispatch_exec</span><span class="p">,</span> <span class="n">dispatch</span><span class="p">)</span> <span class="o"><span class="hl">=</span>=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="k">if</span> <span class="p">(</span><span class="n">ast_taskprocessor_push</span><span class="p">(</span><span class="n">sub</span><span class="o">-></span><span class="n">mailbox</span><span class="p">,</span> <span class="n">dispatch_exec</span><span class="p">,</span> <span class="n">dispatch</span><span class="p">)</span> <span class="o"><span class="hl">!</span>=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">546</font></th>
<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="cm">/* Ownership transferred to mailbox.</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="cm">/* Push failed; just delete the dispatch.</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> * Don't increment ref, b/c the task processor</span></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#ffc5ce" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> * may have already gotten rid of the object.</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> */</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span> */</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">dispatch</span> <span class="o">=</span> <span class="nb">NULL</span><span class="p">;</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><span class="n">ast_log</span><span class="p">(</span><span class="n">LOG_DEBUG</span><span class="p">,</span> <span class="s">"Dropping dispatch</span><span class="se">\n</span><span class="s">"</span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">These should be ast_debug(1, ...) instead of unconditional output.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Actually, those should have been LOG_ERROR, since they are allocation failures.
Thanks!</pre>
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<p>- David</p>
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<p>On September 27th, 2013, 12:59 p.m. CDT, David Lee wrote:</p>
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<div>Review request for Asterisk Developers.</div>
<div>By David Lee.</div>
<p style="color: grey;"><i>Updated Sept. 27, 2013, 12:59 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
Asterisk
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This patch addresses several performance problems that were found in
the initial performance testing of Asterisk 12.
The Stasis dispatch object was allocated as an AO2 object, even though
it has a very confined lifecycle. This was replaced with a straight
ast_malloc().
The Stasis message router was spending an inordinate amount of time
searching hash tables. In this case, most of our routers had 6 or
fewer routes in them to begin with. This was replaced with an array
that's searched linearly for the route.
We more heavily rely on AO2 objects in Asterisk 12, and the memset()
in ao2_ref() actually became noticeable on the profile. This was
#ifdef'ed to only run when AO2_DEBUG was enabled.
After being misled by an erroneous comment in taskprocessor.c during
profiling, the wrong comment was removed.
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Unit tests pass.
Using the setup below, sipp was run against the 12 branch both with
and without my changes.
==
[test-server]$ cat extensions.conf
[performance]
exten => service,1,Answer
exten => service,n,Wait(1)
exten => service,n,Hangup
[test-server]$ cat sip.conf
[perf](!)
type=peer
qualify=no
disallow=all
allow=g722
allow=ulaw
insecure=invite,port
context=performance
[test-client](perf)
host=test-client
Simple sipp scenario:
[test-client]$ sipp -sn uac -l 100 -r 50 tests-server</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>/branches/12/include/asterisk/stasis_message_router.h <span style="color: grey">(399650)</span></li>
<li>/branches/12/main/astobj2.c <span style="color: grey">(399650)</span></li>
<li>/branches/12/main/stasis.c <span style="color: grey">(399650)</span></li>
<li>/branches/12/main/stasis_message_router.c <span style="color: grey">(399650)</span></li>
<li>/branches/12/main/taskprocessor.c <span style="color: grey">(399650)</span></li>
<li>/branches/12/res/res_pjsip/include/res_pjsip_private.h <span style="color: grey">(399650)</span></li>
<li>/branches/12/tests/test_stasis.c <span style="color: grey">(399650)</span></li>
</ul>
<p><a href="https://reviewboard.asterisk.org/r/2873/diff/" style="margin-left: 3em;">View Diff</a></p>
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