Still waiting for swap prefetch
Posted Jul 26, 2007 1:56 UTC (Thu) by sobdk
In reply to: Still waiting for swap prefetch
Parent article: Still waiting for swap prefetch
Now I've been programming since magnetic drums were hip so I may be a bit confused here but it seems to me that I can remember a time less than a decade ago when a system didn't need a couple of gigs to run Linux well.
I would say it still does. I'm writing this as we speak from a PIII 700 MHz with 256 MB of RAM and honest Linux runs great. I even use Firefox which tends to eat up 50% of my RAM according to top, but still no complaints. In fact even with Firefox using half my RAM I'm still not even touching swap.
Interestingly enough when I read some of the posts on lkml claiming that they had 1GB of RAM and swap prefetch drastically improved their workload, all I could think is "what on earth are these people running?" Until a couple of months ago my dev-machine at work only had 512 MB of RAM and had all kinds of nasty things like Firefox, beagle, and Lotus Notes running but my swap was rarely used. Conversely on days when I was forced to boot it into Windows XP for one reason or another I couldn't leave an application minimized for more than 10 minutes before Windows decided to swap it out. Waiting 1 minute every time I switch apps on Windows is enough to make me go crazy and be thankful that Linux has a sane swapping algorithm.
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