mirror of
https://github.com/9fans/plan9port.git
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72 lines
1.1 KiB
C
72 lines
1.1 KiB
C
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#include "stdinc.h"
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enum {
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Nblock = 300000,
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BlockSize = 8*1024,
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};
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uchar data[Nblock*VtScoreSize];
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int rflag;
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int nblock = 10000;
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int perm[Nblock];
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void
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main(int argc, char *argv[])
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{
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VtSession *z;
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int i, j, t;
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int start;
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uchar buf[BlockSize];
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srand(time(0));
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ARGBEGIN{
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case 'r':
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rflag++;
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break;
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case 'n':
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nblock = atoi(ARGF());
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break;
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}ARGEND
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for(i=0; i<nblock; i++)
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perm[i] = i;
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if(rflag) {
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for(i=0; i<nblock; i++) {
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j = nrand(nblock);
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t = perm[j];
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perm[j] = perm[i];
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perm[i] = t;
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}
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}
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if(readn(0, data, VtScoreSize*nblock) < VtScoreSize*nblock)
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sysfatal("read failed: %r");
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vtAttach();
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z = vtDial("iolaire2");
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if(z == nil)
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sysfatal("cound not connect to venti");
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if(!vtConnect(z, 0))
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vtFatal("vtConnect: %s", vtGetError());
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print("starting\n");
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start = times(0);
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if(rflag && nblock > 10000)
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nblock = 10000;
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for(i=0; i<nblock; i++) {
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if(vtRead(z, data+perm[i]*VtScoreSize, VtDataType, buf, BlockSize) < 0)
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vtFatal("vtRead failed: %d: %s", i, vtGetError());
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}
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print("time = %f\n", (times(0) - start)*0.001);
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vtClose(z);
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vtDetach();
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}
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