Information Technology Reference
In-Depth Information
A
B
70%
70%
60%
60%
50%
50%
40%
40%
30%
30%
20%
20%
10%
10%
0%
0%
12345678
12345678
User processes
User processes
Fig. 4.
Measurements obtained on Intel Core i7-4770 processors with Turbo Boost disabled
Finally, Figure 5 shows the intrusiveness percentage measured over a desktop
based on the Intel Core i7-4770 architecture. In these tests, Turbo Boost, Hyper-
Threading, and Speed Step technologies were disabled. In comparison with Figure 1
A and B, where such technologies were enabled, it can be seen that intrusiveness is
reduced from 50% to 14% in the worst case. Moreover, on average intrusiveness per-
centage reduces up to 14%. It is important to note that such comparison should be
considered to only a maximum of 4 processes being executed by end-users during the
test, since CPU threads were halved when Hyper-Threading technology was disabled.
A
B
14%
14%
12%
12%
10%
10%
8%
8%
6%
6%
4%
4%
2%
2%
0%
0%
1
2
3
4
1
2
3
4
User processes
User processes
Fig. 5.
Measurements obtained on Intel Core i7-4770 processors with Turbo Boost, Hyper-
Threading, and Speed Step technologies disabled. This graph shows a range from 1 to 4 user
processes because processor threads were reduced when Hyper-Threading was disabled.
