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Is there a way to get DTrace printf output Bytes in human readable format GB, TB, ... ?

For example here:

#!/usr/sbin/dtrace -s

#pragma D option quiet

dtrace:::BEGIN
{
        trace("Tracing... Hit Ctrl-C to end.\n");
}

nfsv3:::op-read-done
{
        @readbytes[args[1]->noi_curpath] = sum(args[2]->res_u.ok.data.data_len);
}


nfsv3:::op-write-done
{
        @writebytes[args[1]->noi_curpath] = sum(args[2]->res_u.ok.count);
}

dtrace:::END
{
        printf("\n%12s %12s  %s\n", "Rbytes", "Wbytes", "Pathname");
        printa("%@12d %@12d  %s\n", @readbytes, @writebytes);
}

Source http://wikis.sun.com/display/DTrace/nfsv3+Provider

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1 Answer 1

I don't know dtrace, but looking at that wiki page shows that it has basic math operators built in. So there is no reason you couldn't multiply the numbers before printing them.

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I think you would want to divide in this situation, but the concept still stands :) –  Mark Henderson Aug 26 '11 at 2:40
    
Heh, nice. Wasn't thinking at all. –  Nathan Powell Aug 26 '11 at 23:06

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