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Sowmini Varadhan 1edd6a14d2 RDS-TCP: Do not bloat sndbuf/rcvbuf in rds_tcp_tune 
Using the value of RDS_TCP_DEFAULT_BUFSIZE (128K)
clobbers efficient use of TSO because it inflates the size_goal
that is computed in tcp_sendmsg/tcp_sendpage and skews packet
latency, and the default values for these parameters actually
results in significantly better performance.

In request-response tests using rds-stress with a packet size of
100K with 16 threads (test parameters -q 100000 -a 256 -t16 -d16)
between a single pair of IP addresses achieves a throughput of
6-8 Gbps. Without this patch, throughput maxes at 2-3 Gbps under
equivalent conditions on these platforms.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2015-10-05 03:34:53 -07:00
..
6lowpan ieee820154: 6lowpan: dispatch evaluation rework 2015-09-17 13:20:03 +02:00
9p net/9p: Remove ib_get_dma_mr calls 2015-08-30 18:12:36 -04:00
802
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8021q net: 8021q: convert to using IFF_NO_QUEUE 2015-08-18 11:55:06 -07:00
appletalk net: Pass kern from net_proto_family.create to sk_alloc 2015-05-11 10:50:17 -04:00
atm atm: deal with setting entry before mkip was called 2015-09-17 22:13:32 -07:00
ax25 NET: AX.25: Stop heartbeat timer on disconnect. 2015-07-15 15:59:58 -07:00
batman-adv batman-adv: turn batadv_neigh_node_get() into local function 2015-08-27 20:15:34 +02:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-09-26 16:08:27 -07:00
bridge bridge: netlink: add support for default_pvid 2015-10-04 16:46:07 -07:00
caif net: caif: convert to using IFF_NO_QUEUE 2015-08-18 11:55:07 -07:00
can can: replace timestamp as unique skb attribute 2015-07-12 21:13:22 +02:00
ceph libceph: don't access invalid memory in keepalive2 path 2015-09-17 20:14:15 +03:00
core tcp: restore fastopen operations 2015-10-05 03:19:06 -07:00
dcb
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dccp tcp: avoid two atomic ops for syncookies 2015-10-05 02:45:27 -07:00
decnet netfilter: Pass priv instead of nf_hook_ops to netfilter hooks 2015-09-18 22:00:16 +02:00
dns_resolver
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dsa switchdev: push object ID back to object structure 2015-10-03 04:49:40 -07:00
ethernet net: help compiler generate better code in eth_get_headlen 2015-09-28 22:51:15 -07:00
hsr net: hsr: convert to using IFF_NO_QUEUE 2015-08-18 11:55:07 -07:00
ieee802154 ieee802154: 6lowpan: use correct ESC value for dispatch 2015-09-17 13:20:04 +02:00
ipv4 ipv4: ICMP packet inspection for multipath 2015-10-05 03:00:04 -07:00
ipv6 ipv6: use ktime_t for internal timestamps 2015-10-05 03:16:47 -07:00
ipx net: Pass kern from net_proto_family.create to sk_alloc 2015-05-11 10:50:17 -04:00
irda irda: use msecs_to_jiffies for conversion to jiffies 2015-05-25 17:46:21 -04:00
iucv s390/iucv: do not use arrays as argument 2015-09-21 16:03:04 -07:00
key net: Fix RCU splat in af_key 2015-08-24 14:48:10 -07:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-10-02 07:21:25 -07:00
l3mdev net: Introduce L3 Master device abstraction 2015-09-29 20:40:32 -07:00
lapb
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llc tcp: fix recv with flags MSG_WAITALL | MSG_PEEK 2015-07-27 01:06:53 -07:00
mac80211 mac80211: use ktime_get_seconds 2015-10-05 03:16:45 -07:00
mac802154 ieee802154: add ack request default handling 2015-08-10 20:43:06 +02:00
mpls mpls: fix mpls_net_init memory leak 2015-08-31 12:45:09 -07:00
netfilter nfnetlink: use y2038 safe timestamp 2015-10-05 03:16:47 -07:00
netlabel
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netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-09-26 16:08:27 -07:00
netrom netfilter: Remove spurios included of netfilter.h 2015-06-18 21:14:32 +02:00
nfc nfc: netlink: Add capability to reply to vendor_cmd with data 2015-08-20 22:00:11 +02:00
openvswitch vxlan: support both IPv4 and IPv6 sockets in a single vxlan device 2015-09-26 22:40:55 -07:00
packet Fix AF_PACKET ABI breakage in 4.2 2015-09-23 14:33:55 -07:00
phonet net: Pass kern from net_proto_family.create to sk_alloc 2015-05-11 10:50:17 -04:00
rds RDS-TCP: Do not bloat sndbuf/rcvbuf in rds_tcp_tune 2015-10-05 03:34:53 -07:00
rfkill rfkill: Copy "all" global state to other types 2015-09-04 14:26:56 +02:00
rose Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-06-24 02:58:51 -07:00
rxrpc rxrpc: Replace get_seconds with ktime_get_seconds 2015-09-20 21:53:56 -07:00
sched sched, bpf: add helper for retrieving routing realms 2015-10-03 05:02:41 -07:00
sctp net: sctp: avoid incorrect time_t use 2015-10-05 03:16:48 -07:00
sunrpc Changes for 4.3-rc4 2015-10-01 16:38:52 -04:00
switchdev switchdev: push object ID back to object structure 2015-10-03 04:49:40 -07:00
tipc tipc: reinitialize pointer after skb linearize 2015-09-20 22:31:20 -07:00
unix af_unix: return data from multiple SKBs on recv() with MSG_PEEK flag 2015-09-29 13:47:08 -07:00
vmw_vsock net: Pass kern from net_proto_family.create to sk_alloc 2015-05-11 10:50:17 -04:00
wimax net:wimax: Fix doucble word "the the" in networking.xml 2015-08-09 22:43:52 -07:00
wireless cfg80211: regulatory: restore proper user alpha2 2015-09-04 14:29:25 +02:00
x25 net: Pass kern from net_proto_family.create to sk_alloc 2015-05-11 10:50:17 -04:00
xfrm inet: constify ip_route_output_flow() socket argument 2015-09-25 13:00:37 -07:00
Kconfig net: Introduce L3 Master device abstraction 2015-09-29 20:40:32 -07:00
Makefile net: Introduce L3 Master device abstraction 2015-09-29 20:40:32 -07:00
compat.c
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socket.c net: Add a struct net parameter to sock_create_kern 2015-05-11 10:50:17 -04:00
sysctl_net.c
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