A comprehensive dynamic tracing framework originating from the Solaris Operating Environment.

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Printing variable sized binary data from reads and writes with dtrace

I'm trying to print out the binary buffers of some read() and write() calls with dtrace. The problem with just using printf() and %s is that the string is terminated at null bytes. (\000) There is ...
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256 views

How well does Cocoa allow auditing of I/O to USB, FireWire and optical media on a Mac?

I have a client who wants us to lock down the Mac laptops we're using to access his data. He wants an audit of all files read and written from removable media (USB, FireWire, optical). I have a ...
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Dtrace Oracle show high fsflush on solaris 10

Solaris 10 - Oracle 11G in a zone Running mpstat , i've noticed that one CPU was at 100% used every 5 seconds for 5 seconds while all other CPU were fine, in used but nicely spread. 1 0 0 0 ...
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Can DTrace help find cause for tcp connection reset on Solaris 10 x86?

I'm running performance tests on a web application hosted on a Glassfish cluster. Each cluster instance is hosted on a separate Solaris 10 zone and the http traffic is load balanced between the ...
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Dtrace not displaying stacks on Mac

I'm on OSx Yosemite and i'm playing with Node.js CPU profiling. However i can't get DTrace to display the stack traces. I'm suspecting a problem with jstack/ustack. So if i do a DTrace at 97Hz: sudo ...
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Why is server refusing new connections?

One of our proprietary closed source server applications sometimes stops accepting new connection from remote nodes on its server port. Remote nodes that are already connected work fine. Any new ...