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OpenCloudOS-Kernel
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John Heffner ae8064ac32 [TCP]: Bound TSO defer time 
This patch limits the amount of time you will defer sending a TSO segment
to less than two clock ticks, or the time between two acks, whichever is
longer.

On slow links, deferring causes significant bursts.  See attached plots,
which show RTT through a 1 Mbps link with a 100 ms RTT and ~100 ms queue
for (a) non-TSO, (b) currnet TSO, and (c) patched TSO.  This burstiness
causes significant jitter, tends to overflow queues early (bad for short
queues), and makes delay-based congestion control more difficult.

Deferring by a couple clock ticks I believe will have a relatively small
impact on performance.

Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2006-10-18 20:36:48 -07:00
..
802 [TR]: endiannness annotations 2006-09-28 17:53:59 -07:00
8021q [PATCH] Finish annotations of struct vlan_ethhdr 2006-10-10 16:15:34 -07:00
appletalk [ATALK]: endianness annotations 2006-09-28 17:53:58 -07:00
atm Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
ax25 [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
bluetooth [Bluetooth] Add locking for bt_proto array manipulation 2006-10-15 23:14:34 -07:00
bridge [BRIDGE]: flush forwarding table when device carrier off 2006-10-15 23:14:13 -07:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2006-10-17 08:56:43 -07:00
dccp [NET]: Use typesafe inet_twsk() inline function instead of cast. 2006-10-11 23:59:58 -07:00
decnet [DECNET]: Use correct config option for routing by fwmark in compare_keys() 2006-10-15 23:14:05 -07:00
econet [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
ethernet [NET]: Annotate dst_ops protocol 2006-09-28 18:02:58 -07:00
ieee80211 [PATCH] bcm43xx: WE-21 support 2006-09-25 16:52:16 -04:00
ipv4 [TCP]: Bound TSO defer time 2006-10-18 20:36:48 -07:00
ipv6 [IPV6]: Always copy rt->u.dst.error when copying a rt6_info. 2006-10-18 19:55:30 -07:00
ipx [IPX]: Fix typo, ipxhdr() --> ipx_hdr() 2006-08-09 17:36:15 -07:00
irda [PATCH] strndup() would better take size_t, not int 2006-10-10 15:37:24 -07:00
key IPsec: correct semantics for SELinux policy matching 2006-10-11 23:59:37 -07:00
lapb [LAPB]: Fix windowsize check 2006-08-05 21:15:58 -07:00
llc [LLC]: multicast receive device match 2006-08-13 18:56:26 -07:00
netfilter [NETFILTER]: ctnetlink: Remove debugging messages 2006-10-15 23:14:11 -07:00
netlabel NetLabel: fix a cache race condition 2006-10-11 23:59:29 -07:00
netlink [GENL]: Provide more information to userspace about registered genl families 2006-09-22 15:18:51 -07:00
netrom [NETROM] lockdep: fix false positive 2006-07-12 13:59:02 -07:00
packet [NET]: Fix sk->sk_filter field access 2006-09-22 15:18:47 -07:00
rose [ROSE] lockdep: fix false positive 2006-07-12 13:58:59 -07:00
rxrpc [PATCH] kmemdup: some users 2006-10-01 00:39:19 -07:00
sched [PKT_SCHED] sch_htb: use rb_first() cleanup 2006-10-12 01:52:05 -07:00
sctp [IPV6]: Make sure error handling is done when calling ip6_route_output(). 2006-10-18 19:55:27 -07:00
sunrpc [PATCH] knfsd: Allow lockd to drop replies as appropriate 2006-10-17 08:18:46 -07:00
tipc [TIPC]: Updated TIPC version number to 1.6.2 2006-10-18 19:55:24 -07:00
unix [AF_UNIX]: Change max_dgram_qlen sysctl to __read_mostly 2006-09-22 15:18:42 -07:00
wanrouter [NET]: Conversions from kmalloc+memset to k(z|c)alloc. 2006-07-21 14:51:30 -07:00
x25 Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
xfrm [XFRM]: Fix xfrm_state_num going negative. 2006-10-15 23:14:18 -07:00
Kconfig [NET] Kconfig: fix cut/paste error in TCPPROBE 2006-09-28 17:53:57 -07:00
Makefile [NetLabel]: core NetLabel subsystem 2006-09-22 14:53:34 -07:00
TUNABLE Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
compat.c [NET]: File descriptor loss while receiving SCM_RIGHTS 2006-10-11 23:59:48 -07:00
nonet.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
socket.c [PATCH] file: modify struct fown_struct to use a struct pid 2006-10-02 07:57:14 -07:00
sysctl_net.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00