Eric Dumazet d9b2938aab net: attempt a single high order allocation ... In commit ed98df3361 ("net: use __GFP_NORETRY for high order allocations") we tried to address one issue caused by order-3 allocations. We still observe high latencies and system overhead in situations where compaction is not successful. Instead of trying order-3, order-2, and order-1, do a single order-3 best effort and immediately fallback to plain order-0. This mimics slub strategy to fallback to slab min order if the high order allocation used for performance failed. Order-3 allocations give a performance boost only if they can be done without recurring and expensive memory scan. Quoting David : The page allocator relies on synchronous (sync light) memory compaction after direct reclaim for allocations that don't retry and deferred compaction doesn't work with this strategy because the allocation order is always decreasing from the previous failed attempt. This means sync light compaction will always be encountered if memory cannot be defragmented or reclaimed several times during the skb_page_frag_refill() iteration. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-08-29 20:28:23 -07:00
..
6lowpan	6lowpan: Allow 6LoWPAN to be modular	2014-08-07 11:44:18 -07:00
9p	9P: remove unnecessary break after return	2014-07-15 16:27:00 -07:00
802	net: set name_assign_type in alloc_netdev()	2014-07-15 16:12:48 -07:00
8021q	net: Always untag vlan-tagged traffic on input.	2014-08-11 12:16:51 -07:00
appletalk	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2014-07-16 14:09:34 -07:00
atm	lec: Use rtnl lock/unlock when updating MTU	2014-08-21 16:31:23 -07:00
ax25	net: Fix use after free by removing length arg from sk_data_ready callbacks.	2014-04-11 16:15:36 -04:00
batman-adv	batman-adv: Fix parameter order of hlist_add_behind	2014-08-16 19:19:08 -07:00
bluetooth	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-08-06 09:38:14 -07:00
bridge	net: Always untag vlan-tagged traffic on input.	2014-08-11 12:16:51 -07:00
caif	caif: remove unnecessary break after goto	2014-07-15 16:27:01 -07:00
can	can: add hash based access to single EFF frame filters	2014-05-19 09:38:24 +02:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2014-08-13 17:43:29 -06:00
core	net: attempt a single high order allocation	2014-08-29 20:28:23 -07:00
dcb	dcbnl : Fix misleading dcb_app->priority explanation	2014-07-30 17:21:05 -07:00
dccp	inet: move ipv6only in sock_common	2014-07-01 23:46:21 -07:00
decnet	net: Split sk_no_check into sk_no_check_{rx,tx}	2014-05-23 16:28:53 -04:00
dns_resolver	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2014-08-06 08:06:39 -07:00
dsa	net: set name_assign_type in alloc_netdev()	2014-07-15 16:12:48 -07:00
ethernet	net: set name_assign_type in alloc_netdev()	2014-07-15 16:12:48 -07:00
hsr	net/hsr: Remove left-over never-true conditional code.	2014-07-11 15:04:40 -07:00
ieee802154	inet: frags: use kmem_cache for inet_frag_queue	2014-08-02 15:31:31 -07:00
ipv4	tcp: fix ssthresh and undo for consecutive short FRTO episodes	2014-08-14 14:38:55 -07:00
ipv6	net: ipv6: fib: don't sleep inside atomic lock	2014-08-22 10:54:49 -07:00
ipx	net: Split sk_no_check into sk_no_check_{rx,tx}	2014-05-23 16:28:53 -04:00
irda	irda: Fix rd_frame control field initialization in irlap_send_rd_frame()	2014-08-13 20:05:52 -07:00
iucv	af_iucv: avoid path quiesce of severed path in shutdown()	2014-07-21 20:21:40 -07:00
key	af_key: remove unnecessary break after return	2014-07-15 16:27:00 -07:00
l2tp	net: use inet6_iif instead of IP6CB()->iif	2014-07-31 22:37:06 -07:00
lapb	net/lapb: re-send packets on timeout	2013-09-23 16:52:45 -04:00
llc	llc: remove noisy WARN from llc_mac_hdr_init	2014-01-28 18:01:32 -08:00
mac80211	mac80211: fix channel switch for chanctx-based drivers	2014-08-22 14:45:49 -07:00
mac802154	net: set name_assign_type in alloc_netdev()	2014-07-15 16:12:48 -07:00
mpls	gre: Call gso_make_checksum	2014-06-04 22:46:38 -07:00
netfilter	netfilter: nf_tables: fix error return code	2014-08-08 16:47:29 +02:00
netlabel	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-08-06 09:38:14 -07:00
netlink	netlink: Annotate RCU locking for seq_file walker	2014-08-14 15:13:40 -07:00
netrom	net: set name_assign_type in alloc_netdev()	2014-07-15 16:12:48 -07:00
nfc	Merge tag 'master-2014-07-31' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next	2014-08-05 13:18:20 -07:00
openvswitch	openvswitch: fix panic with multiple vlan headers	2014-08-22 11:24:04 -07:00
packet	packet: handle too big packets for PACKET_V3	2014-08-21 16:44:28 -07:00
phonet	net: set name_assign_type in alloc_netdev()	2014-07-15 16:12:48 -07:00
rds	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-06-12 14:27:40 -07:00
rfkill	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next	2014-05-22 13:58:36 -04:00
rose	net: set name_assign_type in alloc_netdev()	2014-07-15 16:12:48 -07:00
rxrpc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-08-06 09:38:14 -07:00
sched	cbq: now_rt removal	2014-08-19 10:58:44 -07:00
sctp	net: sctp: fix suboptimal edge-case on non-active active/retrans path selection	2014-08-22 11:31:30 -07:00
sunrpc	NFS client updates for Linux 3.17	2014-08-13 18:13:19 -06:00
tipc	tipc: Fix build.	2014-08-19 11:16:38 -07:00
unix	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-06-12 14:27:40 -07:00
vmw_vsock	vsock: Make transport the proto owner	2014-05-05 13:13:50 -04:00
wimax	wimax: remove dead code	2013-11-21 13:09:42 -05:00
wireless	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless	2014-07-25 10:22:36 -04:00
x25	net: Fix use after free by removing length arg from sk_data_ready callbacks.	2014-04-11 16:15:36 -04:00
xfrm	list: fix order of arguments for hlist_add_after(_rcu)	2014-08-06 18:01:24 -07:00
compat.c	net: sendmsg: fix NULL pointer dereference	2014-07-29 12:20:22 -07:00
Kconfig	6lowpan: introduce new net/6lowpan directory	2014-07-12 01:53:30 +02:00
Makefile	6lowpan: introduce new net/6lowpan directory	2014-07-12 01:53:30 +02:00
nonet.c
socket.c	net-timestamp: sock_tx_timestamp() fix	2014-08-06 12:38:07 -07:00
sysctl_net.c	net: Update the sysctl permissions handler to test effective uid/gid	2013-10-07 15:57:56 -04:00