Using Shadow Page Cache to Improve Isolated Drivers Performance

Table 1

The throughput (MB/s) or running time (s) of drivers, in the bracket is the relative performance; the performance of ens1370 and intel8x0 is running time; others are throughput.

Drivers	Benchmarks	NATIVE	DWC	SDWC
e1000	TCP-sending	93.95	0.47 (0.50%)	90.61 (96.45%)
	TCP-receiving	92.90	0.56 (0.60%)	92.28 (99.33%)
	UDP-sending	100.81	0.45 (0.45%)	60.85 (60.36%)
	UDP-receiving	92.47	0.77 (0.84%)	77.3 (83.59%)
rtl8139	TCP-sending	71.64	0.08 (0.11%)	39.69 (55.40%)
	TCP-receiving	94.05	0.21 (0.23%)	83.53 (88.82%)
	UDP-sending	122.54	0.11 (0.09%)	63.66 (51.95%)
	UDP-receiving	96.11	0.1 (0.10%)	36.1 (37.56%)
usb	tar	1.22	0.15 (12.69%)	0.99 (81.45%)
sd	tar	1.74	0.28 (16.11%)	1.10 (62.76%)
ens1370	mplayer	79.50	1094.2 (7.27%)	79.76 (99.68%)
intel8X0	mplayer	79.44	1318.3 (6.03%)	79.77 (99.59%)