Michael S. Tsirkin eaae8132ef vhost-net: select tx zero copy dynamically ... Even when vhost-net is in zero-copy transmit mode, net core might still decide to copy the skb later which is somewhat slower than a copy in user context: data copy overhead is added to the cost of page pin/unpin. The result is that enabling tx zero copy option leads to higher CPU utilization for guest to guest and guest to host traffic. To fix this, suppress zero copy tx after a given number of packets triggered late data copy. Re-enable periodically to detect workload changes. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-11-02 21:29:58 -04:00
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Kconfig	tcm_vhost: Initial merge for vhost level target fabric driver	2012-07-29 13:49:10 -07:00
Kconfig.tcm	tcm_vhost: Initial merge for vhost level target fabric driver	2012-07-29 13:49:10 -07:00
Makefile	tcm_vhost: Initial merge for vhost level target fabric driver	2012-07-29 13:49:10 -07:00
net.c	vhost-net: select tx zero copy dynamically	2012-11-02 21:29:58 -04:00
tcm_vhost.c	vhost: move -net specific code out	2012-11-02 21:29:58 -04:00
tcm_vhost.h	tcm_vhost: Convert I/O path to use target_submit_cmd_map_sgls	2012-10-02 14:16:20 -07:00
test.c	vhost: Separate vhost-net features from vhost features	2012-07-22 01:21:53 +03:00
test.h
vhost.c	vhost: move -net specific code out	2012-11-02 21:29:58 -04:00
vhost.h	vhost: move -net specific code out	2012-11-02 21:29:58 -04:00