Friday, May 20, 2005

Performance monitoring with Hyperthreading

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Hyperthreading is used by most recent Intel servers, Intel describe it here. I tried searching for information on the performance impact and...
4 comments:
Thursday, May 12, 2005

Seeing storage problems

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Change of topic... Those of you who have dealt with Sun storage performance over the years might have heard of Dave Fisk, we became good fri...
Wednesday, May 04, 2005

extraccting on SPARC

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I made it with no problems on SPARC Solaris 10 (using /usr/sfw/bin/gcc) and it seems to be working fine. The binary doesn't work on Sola...

extracct 1.0

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I cleaned up the build directory and renamed the program extracct - extract useful info from exacct - and its been running fine on Solaris 1...
3 comments:
Thursday, April 28, 2005

Pesky style sheet format.....

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Sorry that some of the lines are wrapped and others run off the edge, I'm still figuring out how to make the composition tools and templ...
1 comment:

Automated rotating exdump

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I've added an option that automates the processing of exacct data to text file format and rotates the logs, it is hard wired to create a...
Monday, April 18, 2005

Flow accounting printout

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I went to edit the code and realized that I hadn't finished some previous work, so I added a printout of the flow accounting data, an ex...
4 comments:
Thursday, April 14, 2005

Sequencing exacct logs

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I decided to simplify the next step and to just get raw data logged in a useful manner. To do this there needs to be a periodic process that...
Friday, April 01, 2005

Writing accounting records at time intervals

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A major new feature of the exacct system is the ability to get an accounting record logged without terminating the process. There are two fo...
3 comments:
Thursday, March 24, 2005

Extracting useful exacct process data

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I modified the /usr/demo/libexacct/exdump.c example code to include the data structures described in previous posts, and made the code updat...
Wednesday, March 16, 2005

An exercise in complexity....

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Time for a grumble.... My plan was to take the libexacct.so API and expose it as an SE toolkit class. After looking at what it would take to...
Monday, March 14, 2005

Data structures and objects

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The exacct data file is a complex tagged object format that is read via the libexacct library routines. While generic and flexible, it is a ...

Capture Ratio and measurement overhead

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For performance monitoring applications, we often want to know the process related information, but collecting it from /proc is very expensi...
1 comment:

Partial and Interval accounting records

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Traditional accounting generates a record only when the process terminates. The current process data from ps contains different information ...
Thursday, March 10, 2005

Data from task accounting record

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A task is a group of related processes, when the last one exits, a task record is written. The information is very similar to the process re...

Data from process accounting

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The process accounting record is far more detailed than the standard sysV acct record used by most Unix based systems. For a start it includ...
1 comment:

Data logged by flow accounting

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The data comes in two forms, outgoing traffic is tagged with the userid and project of the initiating process, but incoming traffic is missi...
Wednesday, March 09, 2005

IPQoS Configuration

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I found a config file that logs data to the accounting system without filtering it much, it basically filters by protocol, I just take tcp a...
1 comment:
Wednesday, March 02, 2005

Configuring IPQoS for flow accounting

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I spent some time today working my way through the manuals. What I want is to just have the accounting information about the network flows, ...
2 comments:
Saturday, February 26, 2005

Grid overview presentation at ACM

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I gave this talk at the SF Bay ACM meeting last October They posted the slides , which were the first part of my half day tutorial at CMG04...