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kunwar - to be clear, collectl CAN get a lot of data from /proc but as I told you earlier, not all of that information is available by process in /proc, at least not in /proc/pid where collectl gets...

actually one other thing I just spotted, it you want to filter on a pid, you need to preface the number with a 'p'.
-mark

but wait, what;s with the --hr 100? Are you trying to eliminate all but the first header? if so there's a switch for that too! --hr -1 suppresses all headers (btw - being lazy also invented hr to...

noooooo...
remember, the first question you should as if you think what you want to do is probably useful to a lot of people I've probably already added a switch for it. ;)

collectl -sD...

It's real hard to tell how frequently you're monitoring your statistics and unless you're looking at them very frequently, say every 10 seconds or so, you don't get a lot of help from your data. I...

I just answered a previous note about memory usage and pointed the user at collectl. There are a couple of things worth noting - collectl is VERY lightweight, on the order of using <0.1% of the cpu...

Memory leaks is indeed a bad thing and can be trick to find BUT if you used a tool like collectl it would certainly make things a lot easier. Similar in function to SAR but with much more...

I think one of the biggest mistakes people make when testing is to time the test from start to finish and not pay attention to anything in between. For example, I always use netperf to measure...

This may be overkill and I'm not even sure if it would work on other *nix systems until someone tries it, but...

You could always write your own data importation modules - it would be a bunch of...

And then there's collectl - see: collectl (http://collectl.sourceforge.net/)

It can do most anything from simple interactive monitoring of a few 'subsystems' like cpu, disk, etc and/or writing the...

If anyone is interested I just released a new version that contains an API for collecting any kind of data you want and to include it in the user interface, data files and even be able to send it via...

Of course there's always collectl which essentially replaces all the tools mentioned in the previous post. On the other hand if you're looking for some sort of API to write your own, just look at...

I too have done similar testing but slightly different. Rather than simply time the creation of 100 files, which can be very misleading OR timing the creation of 1M files which is no better, I...

Why use a bunch of tools (sar, vmstat, iostat, mpstat, nfsstat, etc) when one tool can do it all: collectl (http://collectl.sourceforge.net/)
-mark

collectl has the ability to monitor threads in either top more or rolling output. if these are short-lived, you can always set a monitoring interval to < 1 sec! In fact, if you know the process...

re 10: I'm the author of collectl. If there's something inconsistent with the documentation could you let me know what is?

While I don't have any quick answers to the problem of finding the...

I want to run a script that changes the size of the window from which it's been started. Turns out that if I start up a putty windowo to a remove linux box, I can simply issue the command 'resize -s...

Could it be the first time you tried to edit the file you read if from disk an the second time it was in cache so there was no I/O? It will take a couple of seconds to read a 100MB file off disk.
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Uhalt - sorry for only just seeing your thread (I would have responded more quickly had you asked your questions on the soureforge forum). In any event can I assume you are all set now?

I also...

See collectl (http://collectl.sourceforge.net/) for details, but when I wrote it my goal was to have one tool with consistent output so I wouldn't need multiple windows or files worth of data that I...

About 4 years ago I wrote this tool inspired by Rob Urban's collect tool for DEC's Tru64 Unix. What makes this tool as different as collect was in its day is its ability to run at a low overhead and...