Eric Dumazet 10d3be5692 tcp-tso: do not split TSO packets at retransmit time ... Linux TCP stack painfully segments all TSO/GSO packets before retransmits. This was fine back in the days when TSO/GSO were emerging, with their bugs, but we believe the dark age is over. Keeping big packets in write queues, but also in stack traversal has a lot of benefits. - Less memory overhead, because write queues have less skbs - Less cpu overhead at ACK processing. - Better SACK processing, as lot of studies mentioned how awful linux was at this ;) - Less cpu overhead to send the rtx packets (IP stack traversal, netfilter traversal, drivers...) - Better latencies in presence of losses. - Smaller spikes in fq like packet schedulers, as retransmits are not constrained by TCP Small Queues. 1 % packet losses are common today, and at 100Gbit speeds, this translates to ~80,000 losses per second. Losses are often correlated, and we see many retransmit events leading to 1-MSS train of packets, at the time hosts are already under stress. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-04-24 14:43:59 -04:00
..
6lowpan	6lowpan: iphc: fix handling of link-local compression	2016-04-08 19:28:13 +02:00
9p	net/9p: convert to new CQ API	2016-03-10 20:54:09 -05:00
802
8021q	vlan: propagate gso_max_segs	2016-03-17 21:05:01 -04:00
appletalk	appletalk: fix erroneous return value	2016-02-18 14:59:34 -05:00
atm	net: Generalise wq_has_sleeper helper	2015-11-30 14:47:33 -05:00
ax25	ax25: add link layer header validation function	2016-03-09 22:13:01 -05:00
batman-adv	batman-adv: clarify CFG80211 dependency	2016-03-02 13:45:47 -05:00
bluetooth	sock: tigthen lockdep checks for sock_owned_by_user	2016-04-13 22:37:20 -04:00
bridge	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-04-23 18:51:33 -04:00
caif	net: caif: fix misleading indentation	2016-03-14 13:09:50 -04:00
can	sock: enable timestamping using control messages	2016-04-04 15:50:30 -04:00
ceph	mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros	2016-04-04 10:41:08 -07:00
core	libnl: nla_put_msecs(): align on a 64-bit area	2016-04-23 20:13:24 -04:00
dcb	net/dcb: make dcbnl.c explicitly non-modular	2015-10-09 07:52:27 -07:00
dccp	net: introduce lockdep_is_held and update various places to use it	2016-04-07 16:44:14 -04:00
decnet	decnet: Do not build routes to devices without decnet private data.	2016-04-10 23:01:30 -04:00
dns_resolver	net: dns_resolver: convert time_t to time64_t	2015-11-18 16:27:46 -05:00
dsa	net: dsa: remove tag_protocol from dsa_switch	2016-04-21 13:43:11 -04:00
ethernet	eth: Pull header from first fragment via eth_get_headlen	2016-02-24 13:58:05 -05:00
hsr	NLA_BINARY misuse bug in HSR	2016-04-21 13:59:08 -04:00
ieee802154	libnl: nla_put_le64(): align on a 64-bit area	2016-04-23 20:13:24 -04:00
ipv4	tcp-tso: do not split TSO packets at retransmit time	2016-04-24 14:43:59 -04:00
ipv6	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2016-04-24 00:12:08 -04:00
ipx
irda	Merge 4.5-rc4 into tty-next	2016-02-14 14:36:04 -08:00
iucv	af_iucv: Validate socket address length in iucv_sock_bind()	2016-01-19 14:21:08 -05:00
kcm	kcm: Add receive message timeout	2016-03-09 16:36:15 -05:00
key	af_key: fix two typos	2015-10-23 03:05:19 -07:00
l2tp	libnl: nla_put_msecs(): align on a 64-bit area	2016-04-23 20:13:24 -04:00
l3mdev	net: l3mdev: address selection should only consider devices in L3 domain	2016-02-26 14:22:26 -05:00
lapb
llc	sock: tigthen lockdep checks for sock_owned_by_user	2016-04-13 22:37:20 -04:00
mac80211	cfg80211: remove enum ieee80211_band	2016-04-12 15:56:15 +02:00
mac802154	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-03-19 10:05:34 -07:00
mpls	GSO: Add GSO type for fixed IPv4 ID	2016-04-14 16:23:40 -04:00
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2016-04-24 00:12:08 -04:00
netlabel	netlabel: do not initialise statics to NULL	2016-03-07 11:08:26 -05:00
netlink	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-04-23 18:51:33 -04:00
netrom
nfc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-03-19 10:05:34 -07:00
openvswitch	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2016-04-24 00:12:08 -04:00
packet	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-04-23 18:51:33 -04:00
phonet	sock: struct proto hash function may error	2016-02-11 03:54:14 -05:00
rds	RDS: Fix the atomicity for congestion map update	2016-04-16 19:01:05 -04:00
rfkill	rfkill: Use switch to demux userspace operations	2016-04-05 10:48:53 +02:00
rose
rxrpc	rxrpc: Create a null security type and get rid of conditional calls	2016-04-11 15:34:41 -04:00
sched	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-04-23 18:51:33 -04:00
sctp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-04-23 18:51:33 -04:00
sunrpc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-04-23 18:51:33 -04:00
switchdev	switchdev: fix typo in comments/doc	2016-03-24 14:51:24 -04:00
tipc	tipc: fix stale links after re-enabling bearer	2016-04-24 14:35:07 -04:00
unix	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-02-23 00:09:14 -05:00
vmw_vsock	VSOCK: Only check error on skb_recv_datagram when skb is NULL	2016-04-19 20:42:01 -04:00
wimax
wireless	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-04-23 18:51:33 -04:00
x25
xfrm	xfrm: align nlattr properly when needed	2016-04-23 20:13:25 -04:00
compat.c
Kconfig	Make DST_CACHE a silent config option	2016-03-21 22:56:38 -04:00
Makefile	kcm: Kernel Connection Multiplexor module	2016-03-09 16:36:14 -05:00
socket.c	Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-04-14 00:39:15 -04:00
sysctl_net.c	net: sysctl: fix a kmemleak warning	2015-10-23 06:22:08 -07:00