<div dir="ltr"><div>There are 2 parameters:</div><div><br></div><div># The maximal time a packet can wait at the head of<br># transmission queue.<br># The actual time is 4.096usec * 2^<head_of_queue_lifetime><br># The value 0x14 disables this mechanism<br>head_of_queue_lifetime 0x12</div><div><br></div><div># The maximal time a packet can wait at the head of queue on<br># switch port connected to a CA or router port<br>leaf_head_of_queue_lifetime 0x10</div><div><br></div><div>head_of_queue_lifetime is used on switch ports whose peer is a switch port. leaf_head_of_queue_lifetime is used on switch ports whose peer is not a switch port.</div><div><br></div><div>The other related parameter is the switch LifeTimeValue which is:</div><div># The code of maximal time a packet can live in a switch<br># The actual time is 4.096usec * 2^<packet_life_time><br># The value 0x14 disables this mechanism<br>packet_life_time 0x12</div><div><br></div><div><div><br></div><div>These parameters affect packet discarding and can affect performance.</div><div><br></div><div>-- Hal</div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 15, 2017 at 12:55 PM, Black.S <span dir="ltr"><<a href="mailto:Black.S52@yandex.ru" target="_blank">Black.S52@yandex.ru</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div class="m_-6689119012484551999moz-cite-prefix">Oh sorry <br>
<span class="m_-6689119012484551999short_text" id="m_-6689119012484551999result_box" lang="en"><span>I
am very newbie in maillist <br>
I want to write to <br>
<a class="m_-6689119012484551999moz-txt-link-freetext" href="http://lists.openfabrics.org/pipermail/users/2017-June/thread.html" target="_blank">http://lists.openfabrics.org/<wbr>pipermail/users/2017-June/<wbr>thread.html</a><br>
</span></span><br>
My question is <br>
<br>
<br>
<span id="m_-6689119012484551999m_7286851198279519355result_box" lang="en"><span>Does
performance affect the opensm.conf parameter "</span></span><span id="m_-6689119012484551999m_7286851198279519355result_box" lang="en"><span><span class="m_-6689119012484551999st">HOQ <em>Lifetime</em> Limit </span>" ?<br>
</span></span><br>
<span id="m_-6689119012484551999m_7286851198279519355result_box" lang="en"><span><span class="m_-6689119012484551999short_text" id="m_-6689119012484551999result_box" lang="en"><span>in
which case</span></span> this parameter be changed?<br>
<br>
<br>
</span></span>15.09.2017 19:39, Hal Rosenstock пишет:<br>
</div><div><div class="h5">
<blockquote type="cite">
<div dir="ltr">
<div>I don't understand the question. What OpenSM parameters are
you asking about ?</div>
<div><br>
</div>
<div>-- Hal</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Sep 15, 2017 at 11:58 AM,
Black.S <span dir="ltr"><<a href="mailto:Black.S52@yandex.ru" target="_blank">Black.S52@yandex.ru</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">
<div text="#000000" bgcolor="#FFFFFF">
<p><span id="m_-6689119012484551999m_7286851198279519355result_box" lang="en"><span>Hi
all<br>
</span></span></p>
<p><span id="m_-6689119012484551999m_7286851198279519355result_box" lang="en"><span>Sorry
for the late question</span><br>
<br>
<span>Does performance affect the lifetime of the
package ?</span><br>
<br>
<span>Under what circumstances should this parameter
be changed?</span></span></p>
<p><span id="m_-6689119012484551999m_7286851198279519355result_box" lang="en"><span><br>
</span></span></p>
</div>
<br>
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</blockquote>
</div>
<br>
</div>
</blockquote>
<p><br>
</p>
</div></div></div>
</blockquote></div><br></div>