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David S. Miller 314324121f [TCP]: Fix stretch ACK performance killer when doing ucopy. 
When we are doing ucopy, we try to defer the ACK generation to
cleanup_rbuf().  This works most of the time very well, but if the
ucopy prequeue is large, this ACKing behavior kills performance.

With TSO, it is possible to fill the prequeue so large that by the
time the ACK is sent and gets back to the sender, most of the window
has emptied of data and performance suffers significantly.

This behavior does help in some cases, so we should think about
re-enabling this trick in the future, using some kind of limit in
order to avoid the bug case.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-23 12:03:06 -07:00
..
802 [PATCH] update Ross Biro bouncing email address 2005-05-05 16:36:49 -07:00
8021q [PATCH] misc verify_area cleanups 2005-05-01 08:59:08 -07:00
appletalk [ATALK]: Add alloc_ltalkdev(). 2005-05-05 14:25:59 -07:00
atm [PATCH] misc verify_area cleanups 2005-05-01 08:59:08 -07:00
ax25 [AX25] Introduce ax25_type_trans 2005-04-24 18:53:06 -07:00
bluetooth [NET]: kill gratitious includes of major.h 2005-04-25 21:40:39 -07:00
bridge [PATCH] kobject/hotplug split - net bridge 2005-04-18 21:57:37 -07:00
core [PATCH] update Ross Biro bouncing email address 2005-05-05 16:36:49 -07:00
decnet [DECNET]: Fix build after C99 netlink initializer change. 2005-05-05 13:13:29 -07:00
econet Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ethernet [PATCH] update Ross Biro bouncing email address 2005-05-05 16:36:49 -07:00
ipv4 [TCP]: Fix stretch ACK performance killer when doing ucopy. 2005-05-23 12:03:06 -07:00
ipv6 [IPV4/IPV6] Ensure all frag_list members have NULL sk 2005-05-18 22:52:33 -07:00
ipx Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irda [PATCH] ISA DMA Kconfig fixes - part 4 (irda) 2005-05-04 07:33:14 -07:00
key Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
lapb Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
netlink [NETLINK]: Defer socket destruction a bit 2005-05-19 13:07:32 -07:00
netrom Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
packet [PATCH] update Ross Biro bouncing email address 2005-05-05 16:36:49 -07:00
rose Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rxrpc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sched [PKT_SCHED]: Action repeat 2005-05-03 16:29:13 -07:00
sctp [SCTP] Fix SCTP sendbuffer accouting. 2005-04-28 12:02:04 -07:00
sunrpc [PATCH] DocBook: changes and extensions to the kernel documentation 2005-05-01 08:59:25 -07:00
unix [AF_UNIX]: Use lookup_create(). 2005-05-19 12:26:43 -07:00
wanrouter [PATCH] misc verify_area cleanups 2005-05-01 08:59:08 -07:00
x25 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xfrm [IPSEC]: Verify key payload in verify_one_algo 2005-05-19 12:39:49 -07:00
compat.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nonet.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
socket.c [PATCH] update Ross Biro bouncing email address 2005-05-05 16:36:49 -07:00
sysctl_net.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
TUNABLE Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00