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linux-2.6
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linux-2.6/net
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Eric Dumazet 7123aaa3a1 af_unix: speedup /proc/net/unix 
/proc/net/unix has quadratic behavior, and can hold unix_table_lock for
a while if high number of unix sockets are alive. (90 ms for 200k
sockets...)

We already have a hash table, so its quite easy to use it.

Problem is unbound sockets are still hashed in a single hash slot
(unix_socket_table[UNIX_HASH_TABLE])

This patch also spreads unbound sockets to 256 hash slots, to speedup
both /proc/net/unix and unix_diag.

Time to read /proc/net/unix with 200k unix sockets :
(time dd if=/proc/net/unix of=/dev/null bs=4k)

before : 520 secs
after : 2 secs

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2012-06-08 14:27:23 -07:00
..
9p net/9p: Add __force to cast of __user pointer 2012-06-04 13:51:17 -04:00
802 tokenring: delete all remaining driver support 2012-05-15 20:23:16 -04:00
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-16 22:17:37 -04:00
appletalk net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
atm net: Remove casts to same type 2012-06-04 11:45:11 -04:00
ax25 net: use consume_skb() in place of kfree_skb() 2012-06-04 11:27:40 -04:00
batman-adv batman-adv: unset the TT_CLIENT_PENDING flag if the new local entry already exists 2012-05-14 09:05:08 +02:00
bluetooth Bluetooth: Fix checking the wrong flag when accepting a socket 2012-06-05 06:26:26 +03:00
bridge ipv6: correct the ipv6 option name - Pad0 to Pad1 2012-05-17 15:49:51 -04:00
caif Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-05-22 19:22:50 -07:00
can can: update documentation wording error frames -> error messages 2012-05-23 22:55:49 +02:00
ceph Merge git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2012-05-30 11:17:19 -07:00
core Added kernel support in EEE Ethtool commands 2012-06-07 13:18:54 -07:00
dcb net: dcb: add CEE notify calls 2012-04-25 19:47:17 -04:00
dccp net: include/net/sock.h cleanup 2012-05-17 04:50:21 -04:00
decnet net: Remove casts to same type 2012-06-04 11:45:11 -04:00
dns_resolver Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2012-05-21 20:27:36 -07:00
dsa dsa: Convert compare_ether_addr to ether_addr_equal 2012-05-09 20:49:19 -04:00
ethernet net, drivers/net: Convert compare_ether_addr_64bits to ether_addr_equal_64bits 2012-05-10 23:33:01 -04:00
ieee802154 ieee802154: interface type to be added 2012-05-16 15:17:08 -04:00
ipv4 inetpeer: add parameter net for inet_getpeer_v4,v6 2012-06-08 14:27:23 -07:00
ipv6 inetpeer: add parameter net for inet_getpeer_v4,v6 2012-06-08 14:27:23 -07:00
ipx ipx: Remove spurious NULL checking in ipx_ioctl(). 2012-05-19 00:51:04 -04:00
irda net: Remove casts to same type 2012-06-04 11:45:11 -04:00
iucv Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2012-03-22 18:15:32 -07:00
key net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
l2tp net: Remove casts to same type 2012-06-04 11:45:11 -04:00
lapb lapb: Neaten debugging 2012-05-17 18:45:20 -04:00
llc net: include/net/sock.h cleanup 2012-05-17 04:50:21 -04:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-06-06 15:06:41 -07:00
mac802154 mac802154: monitor device support 2012-05-16 15:17:08 -04:00
netfilter net: Remove casts to same type 2012-06-04 11:45:11 -04:00
netlabel netlabel: use GFP flags from caller instead of GFP_ATOMIC 2012-03-22 19:29:57 -04:00
netlink genetlink: Build a generic netlink family module alias 2012-05-29 22:33:56 -04:00
netrom net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
nfc NFC: Queue I frame fragments to the LLCP sockets queue tail 2012-05-16 13:08:14 -04:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-16 22:17:37 -04:00
packet net: Remove casts to same type 2012-06-04 11:45:11 -04:00
phonet net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
rds rds_rdma: don't assume infiniband device is PCI 2012-05-29 17:30:07 -04:00
rfkill device.h: cleanup users outside of linux/include (C files) 2012-03-11 14:27:37 -04:00
rose net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
rxrpc net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
sched sch_atm.c: get rid of poinless extern 2012-06-01 10:37:18 -04:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-16 22:17:37 -04:00
sunrpc Merge branch 'for-3.5' of git://linux-nfs.org/~bfields/linux 2012-06-01 08:32:58 -07:00
tipc net: Remove casts to same type 2012-06-04 11:45:11 -04:00
unix af_unix: speedup /proc/net/unix 2012-06-08 14:27:23 -07:00
wanrouter net/wanrouter: Deprecate and schedule for removal 2012-05-24 16:22:53 -04:00
wimax net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
wireless cfg80211: fix interface combinations check 2012-06-05 14:27:30 -04:00
x25 net: add a limit parameter to sk_add_backlog() 2012-04-23 22:28:28 -04:00
xfrm ipv6: fix incorrect ipsec fragment 2012-05-27 01:11:22 -04:00
Kconfig net: drop NET dependency from HAVE_BPF_JIT 2012-05-21 12:50:12 -07:00
Makefile econet: remove ancient bug ridden protocol 2012-05-18 01:35:08 -04:00
compat.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2012-05-21 20:27:36 -07:00
nonet.c
…
socket.c Merge branch 'for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2012-05-22 17:37:47 -07:00
sysctl_net.c net: delete all instances of special processing for token ring 2012-05-15 20:14:35 -04:00