Thank you Chirs,<div>do you have any reference to how to patch the glibc for this issue?</div><div><br></div><div>Stephen<br><br><div class="gmail_quote">On Wed, Jun 27, 2012 at 1:46 PM, Christopher Rienzo <span dir="ltr">&lt;<a href="mailto:cmrienzo@gmail.com" target="_blank">cmrienzo@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>The crash in the old posix timer is actually caused by a glibc timer_create() race condition when using SIGEV_THREAD.  So, you could should be able to use the old timer if you patch glibc.  I figured that was not a good solution for end users, so I switched to SIGEV_SIGNAL which did degrade performance. </div>

<div><br></div><div>Chris</div><div class="HOEnZb"><div class="h5"><div><br></div><br><br><div class="gmail_quote">On Wed, Jun 27, 2012 at 4:44 AM, Stephen Wilde <span dir="ltr">&lt;<a href="mailto:wstephen80@gmail.com" target="_blank">wstephen80@gmail.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div>My experience in FS timers:</div><div><br></div><div>1. voice quality is related to timer_test result so if you have irregular result, you&#39;ll have bad voice quality (and low ACD)</div>

<div><br></div><div>
2. mod_posix_timer is my solution (I haven&#39;t try timerfd because I&#39;m using CentOS 5.8).</div><div><br></div><div>3. there are two version of mod_posix_timer, the &quot;old&quot; one (the one before the fix of git &#39;FS-4064 mod_posix_timer workaround of CentOS 5 glibc problem&#39;  of 30 april) and the &#39;new&#39; one (present in latest git)</div>


<div><br></div><div>4. the &#39;old&#39; mod_posix_timer is much more efficient that &#39;new&#39; one (with &#39;new&#39; mod_posix_timer is half way between &#39;old&#39; mod_posix_timer and soft timer).</div><div><br>

</div>
<div>5. loading the &#39;old&#39; mod_posix_timer there are random FS crashes, also if you don&#39;t use the posix timer in your profile</div><div><br></div><div>6. the &#39;new&#39; mod_posix_timer solves the crashes of FS</div>


<div><br></div><div>So my conclusion is that the &#39;old&#39; mod_posix_timer is the best one but sometimes FS crashes but the &#39;new&#39; mod_posix_timer is not good as the &#39;old&#39; one but it solves the crash issue.</div>


<div><br></div><div>In my production system I&#39;m using the &#39;old&#39; one in servers with high load and the &#39;new&#39; one in serves with less load, according with timer_test results.</div><div><br></div><div>Memory leak: I have done some test mixing different versions of FS and mod_posix_timer and in any case, if I use the latest Freeswitch git the used memory grows up continously, also if I use &#39;old&#39; mod_posix_timer so, my conclusion is that the memory leakage is related to Freeswitch. In my production server, latest FS git + old mod_posix_timer consumes all server memory (12MB) in 2 days. For this reason, in all my installation I&#39;m using the Freeswitch git of 26th march with new or old mod_posix_timer (depending on timer_test result).</div>

<span><font color="#888888">
<div><br></div><div>Stephen</div></font></span><div><div><br><div class="gmail_quote">On Wed, Jun 27, 2012 at 12:00 AM, marksly <span dir="ltr">&lt;<a href="mailto:mark@callassistants.com" target="_blank">mark@callassistants.com</a>&gt;</span> wrote:<br>


<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I am having the same issue as Stephen Wilde regarding the strange<br>
&quot;timer_test&quot; results. Was it determined that the mod_posix timer is the best<br>
solution? Likewise with Stephen, any timer except 20ms works great.<br>
<br>
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