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Responsiveness under disk I/O

Responsiveness under disk I/O

Posted Nov 18, 2010 21:33 UTC (Thu) by clugstj (subscriber, #4020)
In reply to: Responsiveness under disk I/O by Cato
Parent article: TTY-based group scheduling

100-200 tabs in Firefox? I don't really think Firefox was designed for that.

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Responsiveness under disk I/O

Posted Nov 19, 2010 12:03 UTC (Fri) by Cato (subscriber, #7643) [Link]

You're probably right, but since I keep Firefox open for weeks with session recovery enabled, it's quite easy to build up to that. It's also a good way to stress a Linux system, and I have similar tab counts on Windows 7 which doesn't exhibit this intermittent system-wide pause/freeze behaviour (as long as I don't let it page too much).

I'm experimenting with a very small swapfile on Linux (512MB) etc but that hasn't solved this.

Responsiveness under disk I/O

Posted Nov 26, 2010 9:11 UTC (Fri) by jospoortvliet (subscriber, #33164) [Link]

Don't worry, you don't need 200 tabs in Firefox to get this behavior. I get it all the time by just running a few more apps than (apparently) the kernel with this hardware can handle. Often - memory at 50%, cpu low, but IO spikes up and typing an email is going back to the '80s with having to wait +5 sec for each character to appear. Embarasing, considering I have little if anything running that requires real resources or IO (mail, chat, feedreader, few browser windows, text editor, filemanager, calendar - that's it).

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