? jiang 2212bdbc80 virtio-net: lower min ring num_free for efficiency ... This change lowers ring buffer reclaim threshold from 1/2*queue to budget for better performance. According to our test with qemu + dpdk, packet dropping happens when the guest is not able to provide free buffer in avail ring timely with default 1/2*queue. The value in the patch has been tested and does show better performance. Test setup: iperf3 to generate packets to guest (total 30mins, pps 400k, UDP) avg packets drop before: 2842 avg packets drop after: 360(-87.3%) Further, current code suffers from a starvation problem: the amount of work done by try_fill_recv is not bounded by the budget parameter, thus (with large queues) once in a while userspace gets blocked for a long time while queue is being refilled. Trigger refills earlier to make sure the amount of work to do is limited. Signed-off-by: jiangkidd <jiangkidd@hotmail.com> Acked-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>		2020-01-02 14:55:55 +08:00
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appletalk	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
arcnet	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
bonding	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
caif	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
can	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
cris	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
dsa	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
ethernet	net: update i40evf drv to 3.6.15	2020-01-02 12:11:55 +08:00
fddi	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
fjes	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
hamradio	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
hippi	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
hyperv	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
ieee802154	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
ipvlan	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
phy	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
plip	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
ppp	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
slip	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
team	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
usb	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
vmxnet3	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
wan	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
wimax	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
wireless	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
xen-netback	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
Kconfig	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
LICENSE.SRC	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
Makefile	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
Space.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
dummy.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
eql.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
geneve.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
gtp.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
ifb.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
loopback.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
macsec.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
macvlan.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
macvtap.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
mdio.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
mii.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
netconsole.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
nlmon.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
ntb_netdev.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
rionet.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
sb1000.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
sungem_phy.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
tap.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
tun.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
veth.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
virtio_net.c	virtio-net: lower min ring num_free for efficiency	2020-01-02 14:55:55 +08:00
vrf.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
vsockmon.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
vxlan.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
xen-netfront.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00