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1 | <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
2 | <html> | |
3 | <head> | |
4 | <title>SPARC Architectural Model: User Commands</title> | |
5 | </head> | |
6 | <body bgcolor="#FFFFFF" LANG="en-US"> | |
7 | <div STYLE="margin-bottom: 0cm"></div> | |
8 | ||
9 | <h2> | |
10 | diskdelay | |
11 | </h2> | |
12 | ||
13 | <h4> | |
14 | NAME | |
15 | </h4> | |
16 | <ul> | |
17 | diskdelay - show and configuration disk delay parameters | |
18 | </ul> | |
19 | ||
20 | <h4>SYNOPSIS</h4> | |
21 | <tt> | |
22 | <ul> | |
23 | diskdelay | |
24 | <p> | |
25 | diskdelay <i>read-write-delay</i> | |
26 | <p> | |
27 | diskdelay <i>read-delay</i>/<i>write-delay</i> | |
28 | </ul> | |
29 | </tt> | |
30 | ||
31 | <h4>DESCRIPTION</h4> | |
32 | <ul> | |
33 | The diskdelay command provides the user with a single | |
34 | point of control over all the disks, either to specify a default | |
35 | delay value in the rc-file, or to change the value dynamically. | |
36 | ||
37 | The parameter to diskdelay is in micro-seconds (of simulated | |
38 | time), so for example "diskdelay 8000" will simulate a disk with | |
39 | an average service time of 8 milli-seconds. | |
40 | <p> | |
41 | Individual disks can be configured with individual diskdelays, | |
42 | but which value takes precedence is currently a matter of the | |
43 | coding style of each disk simulator. | |
44 | <p> | |
45 | Without arguments, diskdelay displays the current disk delay settings. | |
46 | <p> | |
47 | In the form, diskdelay <i>read-write-delay</i>, both the | |
48 | read and write disk delay are set to <i>read-write-delay</i>. | |
49 | <p> | |
50 | In the form, diskdelay <i>read-delay</i>/<i>write-delay</i>, both the | |
51 | read and write disk delay are set to <i>read-delay</i> and | |
52 | <i>write-delay</i>, respectively. | |
53 | </ul> | |
54 | ||
55 | <h4>RETURN VALUES</h4> | |
56 | <ul> | |
57 | None. | |
58 | </ul> | |
59 | ||
60 | <h4>SEE ALSO</h4> | |
61 | ||
62 | <hr> | |
63 | </body> | |
64 | </html> |