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<DIV><SPAN class=229263215-09112008><FONT face=Arial color=#0000ff size=2>Thanks
for your effort in testing this patch. We will soon post a new
patch.</FONT></SPAN></DIV>
<DIV><SPAN class=229263215-09112008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=229263215-09112008><FONT face=Arial color=#0000ff
size=2>Thanks</FONT></SPAN></DIV>
<DIV><SPAN class=229263215-09112008><FONT face=Arial color=#0000ff
size=2>Tzachi</FONT></SPAN></DIV><BR>
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style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
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<FONT face=Tahoma size=2><B>From:</B> Smith, Stan
[mailto:stan.smith@intel.com] <BR><B>Sent:</B> Saturday, November 08, 2008
12:07 AM<BR><B>To:</B> Tzachi Dar<BR><B>Cc:</B>
ofw@lists.openfabrics.org<BR><B>Subject:</B> RE: Patch: [ipoib] Limit the time
that is being spent in a DPC(don't handle more than 128 packet at one recv
call)<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=005395921-07112008><FONT face=Arial color=#0000ff
size=2>Hello,</FONT></SPAN></DIV>
<DIV><SPAN class=005395921-07112008><FONT face=Arial color=#0000ff
size=2> Testing this patch produces problems. SM node is running this
code.</FONT></SPAN></DIV>
<DIV><SPAN class=005395921-07112008><FONT face=Arial color=#0000ff
size=2>Problems defined as</FONT></SPAN></DIV>
<DIV><SPAN class=005395921-07112008><FONT face=Arial color=#0000ff
size=2> 1) IPoIB interfaces take approximately 20 seconds to get a DHCP
assigned IPv4 address assigned; long after installer is
done.</FONT></SPAN></DIV>
<DIV><SPAN class=005395921-07112008><FONT face=Arial color=#0000ff
size=2> Without patch, DHCP often has DHCP
address assigned to IPoIB interface before WinOF installer has
finished.</FONT></SPAN></DIV>
<DIV><SPAN class=005395921-07112008></SPAN> </DIV>
<DIV><SPAN class=005395921-07112008></SPAN><SPAN
class=005395921-07112008></SPAN><FONT face=Arial><FONT color=#0000ff><FONT
size=2> <SPAN class=005395921-07112008> 2) During WinOF uninstall phase,
devman remove @IBA\IPOIB...... command hangs
indefinitely?</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT size=+0><FONT color=#0000ff><FONT size=2><SPAN
class=005395921-07112008></SPAN></FONT></FONT></FONT><SPAN
class=005395921-07112008></SPAN><FONT face=Arial><FONT color=#0000ff><FONT
size=2> <SPAN class=005395921-07112008> Additional
uninstall invocations of devman remove {IPOIB & HCA) all hang. I had to
use task manager to kill devman process in order to complete the
uninstall.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT size=+0><FONT color=#0000ff><FONT size=2><SPAN
class=005395921-07112008></SPAN></FONT></FONT></FONT><SPAN
class=005395921-07112008></SPAN><FONT face=Arial><FONT color=#0000ff><FONT
size=2>I<SPAN class=005395921-07112008> removed the patch and rebuilt
ipoib.sys, none of the above problems were
seen.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=005395921-07112008></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=005395921-07112008>stan.</SPAN></FONT></FONT></FONT></DIV>
<DIV><BR></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
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<FONT face=Tahoma size=2><B>From:</B> ofw-bounces@lists.openfabrics.org
[mailto:ofw-bounces@lists.openfabrics.org] <B>On Behalf Of </B>Tzachi
Dar<BR><B>Sent:</B> Thursday, November 06, 2008 12:38 PM<BR><B>To:</B>
ofw@lists.openfabrics.org<BR><B>Subject:</B> [ofw] Patch: [ipoib] Limit the
time that is being spent in a DPC (don't handle more than 128 packet at one
recv call)<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2><SPAN class=034482620-06112008>Windows doesn't
allow one DPC to last more than 100us.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=034482620-06112008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=034482620-06112008>It seems that on
windows 2008 this is being enforced.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=034482620-06112008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=034482620-06112008>As a result I have
added a limit on the number of packets that will be used for each
DPC.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=034482620-06112008>After that we
stop.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=034482620-06112008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=034482620-06112008>Hopefully, there
won't be a need to do more changes.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=034482620-06112008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=034482620-06112008>Thanks</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=034482620-06112008>Tzachi</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Index:
Q:/projinf4/trunk/ulp/ipoib/kernel/ipoib_port.c<BR>===================================================================<BR>---
Q:/projinf4/trunk/ulp/ipoib/kernel/ipoib_port.c (revision 3437)<BR>+++
Q:/projinf4/trunk/ulp/ipoib/kernel/ipoib_port.c (revision 3438)<BR>@@
-1666,7 +1666,7 @@<BR> recv_cnt += __recv_mgr_filter( p_port,
p_wc, &done_list, &bad_list );<BR> cl_perf_stop(
&p_port->p_adapter->perf, FilterRecv );<BR> <BR>- } while(
!p_free );<BR>+ } while( !p_free && recv_cnt <
128);<BR> <BR> /* We're done looking at the endpoint map,
release the reference. */<BR> cl_atomic_dec(
&p_port->endpt_rdr );<BR></DIV></BLOCKQUOTE></FONT></BODY></HTML>