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| author | Eelco Chaudron <echaudro@redhat.com> | 2020-07-15 14:09:28 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-17 10:36:50 -0700 |
| commit | eac87c413bf9794c14d488998a5265ea5b32f04e (patch) | |
| tree | 969f981073d246b9888cc3501d883f6c1f6ebe93 /net/openvswitch/datapath.h | |
| parent | b18432c5a49c9413fd3afb717b378e08cb71331b (diff) | |
| download | linux-stable-eac87c413bf9794c14d488998a5265ea5b32f04e.tar.gz linux-stable-eac87c413bf9794c14d488998a5265ea5b32f04e.tar.bz2 linux-stable-eac87c413bf9794c14d488998a5265ea5b32f04e.zip | |
net: openvswitch: reorder masks array based on usage
This patch reorders the masks array every 4 seconds based on their
usage count. This greatly reduces the masks per packet hit, and
hence the overall performance. Especially in the OVS/OVN case for
OpenShift.
Here are some results from the OVS/OVN OpenShift test, which use
8 pods, each pod having 512 uperf connections, each connection
sends a 64-byte request and gets a 1024-byte response (TCP).
All uperf clients are on 1 worker node while all uperf servers are
on the other worker node.
Kernel without this patch : 7.71 Gbps
Kernel with this patch applied: 14.52 Gbps
We also run some tests to verify the rebalance activity does not
lower the flow insertion rate, which does not.
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Tested-by: Andrew Theurer <atheurer@redhat.com>
Reviewed-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch/datapath.h')
| -rw-r--r-- | net/openvswitch/datapath.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h index 2016dd107939..697a2354194b 100644 --- a/net/openvswitch/datapath.h +++ b/net/openvswitch/datapath.h @@ -20,8 +20,9 @@ #include "meter.h" #include "vport-internal_dev.h" -#define DP_MAX_PORTS USHRT_MAX -#define DP_VPORT_HASH_BUCKETS 1024 +#define DP_MAX_PORTS USHRT_MAX +#define DP_VPORT_HASH_BUCKETS 1024 +#define DP_MASKS_REBALANCE_INTERVAL 4000 /** * struct dp_stats_percpu - per-cpu packet processing statistics for a given @@ -83,6 +84,9 @@ struct datapath { /* Switch meters. */ struct dp_meter_table meter_tbl; + + /* re-balance flow masks timer */ + struct delayed_work masks_rebalance; }; /** |