* [PATCH] xthr: put queue head and tail on separate cache lines
@ 2014-07-30 22:25 Eric Wong
0 siblings, 0 replies; only message in thread
From: Eric Wong @ 2014-07-30 22:25 UTC (permalink / raw)
To: mm; +Cc: Eric Wong
This should reduce cache line contention.
---
xthr.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/xthr.c b/xthr.c
index 6159e82..604a448 100644
--- a/xthr.c
+++ b/xthr.c
@@ -21,10 +21,10 @@
#include <err.h>
#include <stdio.h>
+static struct cds_wfcq_head head;
static size_t iter = 1024;
static size_t mbytes = sizeof(struct cds_wfcq_node);
-static struct cds_wfcq_head head;
-static struct cds_wfcq_tail tail;
+static struct cds_wfcq_tail tail __attribute__((aligned(CAA_CACHE_LINE_SIZE)));
static void *do_free(void *arg)
{
--
EW
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2014-07-30 22:25 [PATCH] xthr: put queue head and tail on separate cache lines Eric Wong
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