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dpif-netdev: Cache align netdev_flow_keys.

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Aligning the 'keys' array seems to have positive performance impact.

Signed-off-by: Bhanuprakash Bodireddy <bhanuprakash.bodireddy@intel.com>
Co-authored-by: Antonio Fischetti <antonio.fischetti@intel.com>
Signed-off-by: Antonio Fischetti <antonio.fischetti@intel.com>
Acked-by: Daniele Di Proietto <diproiettod@vmware.com>
This commit is contained in:
Bhanuprakash Bodireddy
2016-10-14 15:37:10 +01:00
committed by Daniele Di Proietto
parent ad9f05812d
commit 38ee081497
1 changed files with 1 additions and 1 deletions
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lib/dpif-netdev.c
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@@ -4166,7 +4166,7 @@ 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] OVS_ALIGNED_VAR(CACHE_LINE_SIZE);
struct packet_batch_per_flow batches[PKT_ARRAY_SIZE];
long long now = time_msec();
size_t newcnt, n_batches, i;