AcoSail/kernel_optimize_test
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kernel_optimize_test/net
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Herbert Xu a7ab4b501f [TCPv4]: Improve BH latency in /proc/net/tcp 
Currently the code for /proc/net/tcp disable BH while iterating
over the entire established hash table.  Even though we call
cond_resched_softirq for each entry, we still won't process
softirq's as regularly as we would otherwise do which results
in poor performance when the system is loaded near capacity.

This anomaly comes from the 2.4 code where this was all in a
single function and the local_bh_disable might have made sense
as a small optimisation.

The cost of each local_bh_disable is so small when compared
against the increased latency in keeping it disabled over a
large but mostly empty TCP established hash table that we
should just move it to the individual read_lock/read_unlock
calls as we do in inet_diag.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-10 22:06:20 -07:00
..
802 [NET]: cleanup extra semicolons 2007-04-25 22:29:24 -07:00
8021q [NET]: Fix comparisons of unsigned < 0. 2007-06-03 18:08:47 -07:00
appletalk header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
atm [NET]: SPIN_LOCK_UNLOCKED cleanup in drivers/atm, net 2007-04-26 01:37:44 -07:00
ax25 [S390] Kconfig: unwanted menus for s390. 2007-05-10 15:46:07 +02:00
bluetooth Fix use-after-free oops in Bluetooth HID. 2007-07-07 12:22:37 -07:00
bridge [BRIDGE]: Round off STP perodic timers. 2007-05-31 01:23:39 -07:00
core [NETPOLL]: Fixups for 'fix soft lockup when removing module' 2007-07-05 17:42:44 -07:00
dccp [NET]: Fix comparisons of unsigned < 0. 2007-06-03 18:08:47 -07:00
decnet [NETLINK]: Mark netlink policies const 2007-06-07 13:40:10 -07:00
econet [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
ethernet [SK_BUFF]: Introduce skb_reset_mac_header(skb) 2007-04-25 22:24:32 -07:00
ieee80211 [PATCH] softmac: use list_for_each_entry 2007-07-08 22:16:37 -04:00
ipv4 [TCPv4]: Improve BH latency in /proc/net/tcp 2007-07-10 22:06:20 -07:00
ipv6 bonding / ipv6: no addrconf for slaves separately from master 2007-07-10 12:41:19 -04:00
ipx Fix incorrect prototype for ipxrtr_route_packet() 2007-05-17 05:25:49 -07:00
irda [IrDA]: f-timer reloading when sending rejected frames. 2007-06-08 19:15:56 -07:00
iucv Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
key xfrm: Add security check before flushing SAD/SPD 2007-06-07 13:42:46 -07:00
lapb [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
llc Fix occurrences of "the the " 2007-05-09 08:57:56 +02:00
mac80211 [PATCH] mac80211: Don't stop tx queue on master device while scanning. 2007-06-11 20:29:11 -04:00
netfilter [NETFILTER]: nf_conntrack_h323: add checking of out-of-range on choices' index values 2007-07-05 17:40:23 -07:00
netlabel [NetLabel]: consolidate the struct socket/sock handling to just struct sock 2007-06-08 13:33:09 -07:00
netlink [NETLINK]: Mark netlink policies const 2007-06-07 13:40:10 -07:00
netrom [NET]: Rework dev_base via list_head (v3) 2007-05-03 15:13:45 -07:00
packet [AF_PACKET]: Kill CONFIG_PACKET_SOCKET. 2007-05-31 01:23:32 -07:00
rfkill [RFKILL]: Fix check for correct rfkill allocation 2007-05-19 12:24:39 -07:00
rose [NET]: Rework dev_base via list_head (v3) 2007-05-03 15:13:45 -07:00
rxrpc [AF_RXRPC]: Return the number of bytes buffered in rxrpc_send_data() 2007-06-18 23:30:41 -07:00
sched [NET_SCHED]: Cleanup readability of qdisc restart 2007-07-10 22:06:16 -07:00
sctp SCTP: Add scope_id validation for link-local binds 2007-07-05 17:40:15 -07:00
sunrpc sendfile: convert nfsd to splice_direct_to_actor() 2007-07-10 08:04:14 +02:00
tipc [TIPC]: Optimize stream send routine to avoid fragmentation 2007-07-10 22:06:12 -07:00
unix [AF_UNIX]: Fix stream recvmsg() race. 2007-06-07 13:40:44 -07:00
wanrouter [NET]: Fix comparisons of unsigned < 0. 2007-06-03 18:08:47 -07:00
wireless [PATCH] cfg80211: fix signed macaddress in sysfs 2007-06-11 17:47:41 -04:00
x25 header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
xfrm [XFRM]: Fix MTU calculation for non-ESP SAs 2007-06-18 22:30:15 -07:00
compat.c [NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support 2007-04-25 22:24:21 -07:00
Kconfig [S390] Kconfig: no wireless on s390. 2007-05-10 15:46:08 +02:00
Makefile [NET]: rfkill: add support for input key to control wireless radio 2007-05-07 00:34:20 -07:00
nonet.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
socket.c Remove SLAB_CTOR_CONSTRUCTOR 2007-05-17 05:23:04 -07:00
sysctl_net.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
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