svn commit: r47544 - head/en_US.ISO8859-1/htdocs/news/status

Tue Oct 13 06:28:37 UTC 2015

Author: bjk
Date: Tue Oct 13 06:28:35 2015
New Revision: 47544
URL: https://svnweb.freebsd.org/changeset/doc/47544

Log:
  Add ioat(4) report from cem.

Modified:
  head/en_US.ISO8859-1/htdocs/news/status/report-2015-07-2015-09.xml

Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2015-07-2015-09.xml
==============================================================================

--- head/en_US.ISO8859-1/htdocs/news/status/report-2015-07-2015-09.xml	Mon Oct 12 12:05:18 2015	(r47543)
+++ head/en_US.ISO8859-1/htdocs/news/status/report-2015-07-2015-09.xml	Tue Oct 13 06:28:35 2015	(r47544)
@@ -83,4 +83,65 @@
     <description>Miscellaneous</description>
   </category>
 
+  <project cat='kern'>
+    <title>ioat(4) driver import</title>
+
+    <contact>
+      <person>
+	<name>
+	  <given>Jim</given>
+	  <common>Harris</common>
+	</name>
+	<email>jimharris at FreeBSD.org</email>
+      </person>
+
+      <person>
+	<name>
+	  <given>Conrad</given>
+	  <common>Meyer</common>
+	</name>
+	<email>cem at FreeBSD.org</email>
+      </person>
+    </contact>
+
+    <links>
+      <url href="https://en.wikipedia.org/wiki/I/O_Acceleration_Technology">Wikipedia
+	article on IOAT</url>
+      <url href="https://svnweb.FreeBSD.org/base?view=revision&revision=r287117">Commit
+	importing ioat(4)</url>
+    </links>
+
+    <body>
+      <p>A new driver, ioat(4), was added to the tree.  ioat(4)
+	supports Intel's I/O Acceleration Technology devices which are found
+	on some Intel server systems.</p>
+
+      <p>These devices are DMA offload engines, which can accelerate
+	some I/O-heavy applications by offloading memory copies from the main
+	CPU to the I/OAT unit.  This acceleration is not transparent;
+	applications must be adapted to take advantage of the hardware.</p>
+
+      <p>Some I/OAT models support more advanced copying modes, like
+	XOR; these modes are not yet supported in the ioat(4) driver.</p>
+    </body>
+
+    <sponsor>
+      Intel Corporation
+    </sponsor>
+    <sponsor>
+      EMC / Isilon Storage Division
+    </sponsor>
+
+    <help>
+      <task>
+	<p>Further testing, especially on a range of device models other
+	  than BDXDE (looking for volunteers here).</p>
+      </task>
+
+      <task>
+	<p>Support for the more advanced copy modes.</p>
+      </task>
+    </help>
+  </project>
+
 </report>
