Changeset d7fd648 for configure.in

Timestamp:

12/19/14 15:47:34 (6 years ago)

Author:

Richard Sanger <rsangerarj@…>

Branches:

4.0.1-hotfixes, cachetimestamps, develop, dpdk-ndag, etsilive, libtrace4, master, ndag_format, pfring, rc-4.0.1, rc-4.0.2, rc-4.0.3, rc-4.0.4, ringdecrementfix, ringperformance, ringtimestampfixes

Children:

1960910

Parents:

6e41e73

Message:

Improves speed of the DPDK format(and parallel libtrace) and fixes some DPDK bugs

Fixes bug with PCI address being parsed as a decimal instead of hex.
Fixes bug so DPDK Breaks out of loop when libtrace_halt is called

For performance

• Rearranges the header format used to simplify code which might show a small speed up
• Batching packets is now supported thoughout the parallel framework
• DPDK now always reads packets in bursts if possible, including in single threaded mode
• Calls to retrive system time only needs to occur once for a batch of packets
• The CPU core used to run DPDK is/are now picked based upon the NUMA node the NIC is attached to
• A delay has been added to reduce the memory load of polling after unsuccessful attempts this tends to improve performance

File:

• configure.in (modified) (3 diffs)

configure.in

@@ -392 +392 @@
 fi
 
+# If we use DPDK we might be able to use libnuma
+AC_CHECK_LIB(numa, numa_node_to_cpus, have_numa=1, have_numa=0)
+
 # Checks for various "optional" libraries
 AC_CHECK_LIB(pthread, pthread_create, have_pthread=1, have_pthread=0)
@@ -411 +414 @@
 AC_CHECK_LIB(rt, clock_gettime, have_clock_gettime=1, have_clock_gettime=0)
 LIBS=
+
+if test "$have_numa" = 1; then
+        LIBTRACE_LIBS="$LIBTRACE_LIBS -lnuma"
+        AC_DEFINE(HAVE_LIBNUMA, 1, [Set to 1 if libnuma is found supported])
+        with_numa=yes
+else
+        AC_DEFINE(HAVE_LIBNUMA, 0, [Set to 1 if libnuma is found supported])
+        with_numa=no
+fi
 
 if test "$dlfound" = 0; then
@@ -685 +697 @@
 if test x"$libtrace_dpdk" = xtrue; then
     AC_MSG_NOTICE([Compiled with DPDK live capture support: Yes])
+    reportopt "Compiled with DPDK trace NUMA support" $with_numa
 elif test x"$want_dpdk" != "xno"; then
 #   We don't officially support DPDK so only report failure if the user