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<TITLE>RE: [openib-general] performance counters in /sys</TITLE>
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<P><FONT SIZE=2>> -----Original Message-----</FONT>
<BR><FONT SIZE=2>> From: Hal Rosenstock [<A HREF="mailto:halr@voltaire.com">mailto:halr@voltaire.com</A>] </FONT>
<BR><FONT SIZE=2>> Sent: Thursday, May 19, 2005 6:48 PM</FONT>
<BR><FONT SIZE=2>> To: Yaron Haviv</FONT>
<BR><FONT SIZE=2>> Cc: Mark Seger; openib-general@openib.org</FONT>
<BR><FONT SIZE=2>> Subject: RE: [openib-general] performance counters in /sys</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> On Thu, 2005-05-19 at 16:45, Yaron Haviv wrote:</FONT>
<BR><FONT SIZE=2>> > I believe you can use the per VL counters for that</FONT>
<BR><FONT SIZE=2>> > (IB allows counting traffic on a specific VL)</FONT>
<BR><FONT SIZE=2>> > By matching ULPs to VLs (e.g. through the ib_at lib we suggested)</FONT>
<BR><FONT SIZE=2>> > You can get both congestion isolation per traffic type as </FONT>
<BR><FONT SIZE=2>> well as the</FONT>
<BR><FONT SIZE=2>> > ability to count traffic per ULP </FONT>
<BR><FONT SIZE=2>> > (note that up to 8 VLs are supported in the Mellanox chips)</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> PortXmitDataVL[n], PortRcvDataVL[n], PortXmitPktVL[n], and </FONT>
<BR><FONT SIZE=2>> PortRcvPktVL[n] are all IB optional. Do the Mellanox HCAs </FONT>
<BR><FONT SIZE=2>> support these counters ?</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> -- Hal</FONT>
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<P><FONT SIZE=2>No</FONT>
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