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From edwardyf <>
Subject Re: Question bout I/O monitoring
Date Fri, 11 Sep 2009 05:24:22 GMT

unfortunately i am running a Red hat enterprise version, i am doing an
academic experiment which need number of disk I/Os.

I am now looking at SystemTap, which is said to be the iosnoop for linux.
thanks for the guide

Brian Pinkerton-2 wrote:
> If you're on a Mac or Solaris, dtrace will tell you everything you  
> want to know (and more.)  If you're not familiar with dtrace,  
> iosnoop.d is a good start for this kind of measurement.
> At Technorati, I used dtrace to build a trace file of all the read  
> requests made by a big lucene app, recording timestamp, file, offset,  
> and number of bytes read.  Among other things, the measurement led me  
> to decrease the heap size of the JVM so that more of the index would  
> fit in the file cache.
> bri
> On Sep 10, 2009, at 9:39 PM, edwardyf wrote:
>> Thanks for the reply, just checked the Lucid Gaze package, it only  
>> collects
>> the stats at
>> function call level, no I/O stats
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