> On Oct 7, 2016, at 9:17 AM, Bhanuprakash Bodireddy
> <bhanuprakash.bodire...@intel.com> wrote:
>
> Aligning the 'keys' array seems to positively impact performance.
>
> Signed-off-by: Bhanuprakash Bodireddy <bhanuprakash.bodire...@intel.com>
> Signed-off-by: Antonio Fischetti <antonio.fische...@intel.com>
> ---
> lib/dpif-netdev.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c
> index d0bb191..dfc9cbd 100644
> --- a/lib/dpif-netdev.c
> +++ b/lib/dpif-netdev.c
> @@ -4157,7 +4157,7 @@ dp_netdev_input__(struct dp_netdev_pmd_thread *pmd,
> /* Sparse or MSVC doesn't like variable length array. */
> enum { PKT_ARRAY_SIZE = NETDEV_MAX_BURST };
> #endif
> - struct netdev_flow_key keys[PKT_ARRAY_SIZE];
> + struct netdev_flow_key keys[PKT_ARRAY_SIZE] __attribute__((aligned(64)));
Due to compiler compatibility you must use OVS_ALIGNED_VAR(64) instead.
> struct packet_batch_per_flow batches[PKT_ARRAY_SIZE];
> long long now = time_msec();
> size_t newcnt, n_batches, i;
> --
> 2.4.11
>
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