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158032
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2008-10-01T14:54:55.107
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2008-10-01T14:54:55.107
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You should really look at Dtrace. It has the ability to do this sort of thing. <pre><code>#!/usr/sbin/dtrace -s /* * bitesize.d - analyse disk I/O size by process. * Written using DTrace (Solaris 10 build 63). * * This produces a report for the size of disk events caused by * processes. These are the disk events sent by the block I/O driver. * * If applications must use the disks, we generally prefer they do so * sequentially with large I/O sizes. * * 15-Jun-2005, ver 1.00 * * USAGE: bitesize.d # wait several seconds, then hit Ctrl-C * * FIELDS: * PID process ID * CMD command and argument list * value size in bytes * count number of I/O operations * * NOTES: * The application may be requesting smaller sized operations, which * are being rounded up to the nearest sector size or UFS block size. * To analyse what the application is requesting, DTraceToolkit programs * such as Proc/fddist may help. * * SEE ALSO: seeksize.d, iosnoop * * Standard Disclaimer: This is freeware, use at your own risk. * * 31-Mar-2004 Brendan Gregg Created this, build 51. * 10-Oct-2004 " " Rewrote to use the io provider, build 63. */ #pragma D option quiet /* * Print header */ dtrace:::BEGIN { printf("Sampling... Hit Ctrl-C to end.\n"); } /* * Process io start */ io:::start { /* fetch details */ this->size = args[0]->b_bcount; cmd = (string)curpsinfo->pr_psargs; /* store details */ @Size[pid,cmd] = quantize(this->size); } /* * Print final report */ dtrace:::END { printf("\n%8s %s\n","PID","CMD"); printa("%8d %s\n%@d\n",@Size); } </code></pre> From <a href="http://developer.apple.com/documentation/Darwin/Reference/ManPages/man1/bitesize.d.1m.html" rel="nofollow noreferrer">here</a>. To run use <pre><code>sudo dtrace -s bitsize.d </code></pre>
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1. PODisk Activity in Applescript
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1. USMilhous
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