1 7763a61a 2003-11-23 devnull #include "stdinc.h"
 2 7763a61a 2003-11-23 devnull 
 3 7763a61a 2003-11-23 devnull enum {
 4 7763a61a 2003-11-23 devnull 	Nblock = 300000,
 5 7763a61a 2003-11-23 devnull 	BlockSize = 8*1024,
 6 7763a61a 2003-11-23 devnull };
 7 7763a61a 2003-11-23 devnull 
 8 7763a61a 2003-11-23 devnull uchar data[Nblock*VtScoreSize];
 9 7763a61a 2003-11-23 devnull int rflag;
10 7763a61a 2003-11-23 devnull int nblock = 10000;
11 7763a61a 2003-11-23 devnull int perm[Nblock];
12 7763a61a 2003-11-23 devnull 
13 7763a61a 2003-11-23 devnull void
14 7763a61a 2003-11-23 devnull main(int argc, char *argv[])
15 7763a61a 2003-11-23 devnull {
16 7763a61a 2003-11-23 devnull 	VtSession *z;
17 7763a61a 2003-11-23 devnull 	int i, j, t;
18 7763a61a 2003-11-23 devnull 	int start;
19 7763a61a 2003-11-23 devnull 	uchar buf[BlockSize];
20 7763a61a 2003-11-23 devnull 
21 7763a61a 2003-11-23 devnull 	srand(time(0));
22 7763a61a 2003-11-23 devnull 
23 7763a61a 2003-11-23 devnull 	ARGBEGIN{
24 7763a61a 2003-11-23 devnull 	case 'r':
25 7763a61a 2003-11-23 devnull 		rflag++;
26 7763a61a 2003-11-23 devnull 		break;
27 7763a61a 2003-11-23 devnull 	case 'n':
28 7763a61a 2003-11-23 devnull 		nblock = atoi(ARGF());
29 7763a61a 2003-11-23 devnull 		break;
30 7763a61a 2003-11-23 devnull 	}ARGEND
31 7763a61a 2003-11-23 devnull 
32 7763a61a 2003-11-23 devnull 	for(i=0; i<nblock; i++)
33 7763a61a 2003-11-23 devnull 		perm[i] = i;
34 7763a61a 2003-11-23 devnull 
35 7763a61a 2003-11-23 devnull 	if(rflag) {
36 7763a61a 2003-11-23 devnull 		for(i=0; i<nblock; i++) {
37 7763a61a 2003-11-23 devnull 			j = nrand(nblock);
38 7763a61a 2003-11-23 devnull 			t = perm[j];
39 7763a61a 2003-11-23 devnull 			perm[j] = perm[i];
40 7763a61a 2003-11-23 devnull 			perm[i] = t;
41 7763a61a 2003-11-23 devnull 		}
42 7763a61a 2003-11-23 devnull 	}
43 7763a61a 2003-11-23 devnull 
44 7763a61a 2003-11-23 devnull 	if(readn(0, data, VtScoreSize*nblock) < VtScoreSize*nblock)
45 7763a61a 2003-11-23 devnull 		sysfatal("read failed: %r");
46 7763a61a 2003-11-23 devnull 
47 7763a61a 2003-11-23 devnull 	vtAttach();
48 7763a61a 2003-11-23 devnull 
49 7763a61a 2003-11-23 devnull 	z = vtDial("iolaire2");
50 7763a61a 2003-11-23 devnull 	if(z == nil)
51 7763a61a 2003-11-23 devnull 		sysfatal("cound not connect to venti");
52 7763a61a 2003-11-23 devnull 	if(!vtConnect(z, 0))
53 7763a61a 2003-11-23 devnull 		vtFatal("vtConnect: %s", vtGetError());
54 7763a61a 2003-11-23 devnull 
55 7763a61a 2003-11-23 devnull 	print("starting\n");
56 7763a61a 2003-11-23 devnull 
57 7763a61a 2003-11-23 devnull 	start = times(0);
58 7763a61a 2003-11-23 devnull 
59 7763a61a 2003-11-23 devnull 	if(rflag && nblock > 10000)
60 7763a61a 2003-11-23 devnull 		nblock = 10000;
61 7763a61a 2003-11-23 devnull 
62 7763a61a 2003-11-23 devnull 	for(i=0; i<nblock; i++) {
63 7763a61a 2003-11-23 devnull 		if(vtRead(z, data+perm[i]*VtScoreSize, VtDataType, buf, BlockSize) < 0)
64 7763a61a 2003-11-23 devnull 			vtFatal("vtRead failed: %d: %s", i, vtGetError());
65 7763a61a 2003-11-23 devnull 	}
66 7763a61a 2003-11-23 devnull 
67 7763a61a 2003-11-23 devnull 	print("time = %f\n", (times(0) - start)*0.001);
68 7763a61a 2003-11-23 devnull 
69 7763a61a 2003-11-23 devnull 	vtClose(z);
70 7763a61a 2003-11-23 devnull 	vtDetach();
71 7763a61a 2003-11-23 devnull }