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Old 04-06-2002, 06:21 PM   #1
drw
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Registered: Apr 2002
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Mandrake 8.2


New to Linux...like it so far
But what about fine tuning...?
As a recovering Windows user, I would like to know a few things that I cannot find in manuals,help,etc.
In Windows, after the clean install goes the inf update.
does it apply to Linux?
How 'bout firewall?
Startup services tweaks?
Disk cache size?
Stuff like that there.

Also I read that Linux has trouble reporting the correct amount of ram?

I have: ASUS P4TE
P4 @2.2 gig
512Mb Rimm
NVidia TNT2
Creative PCI128
Cable modem
 
Old 04-06-2002, 06:32 PM   #2
finegan
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Registered: Aug 2001
Location: Dublin, Ireland
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Fine tuning? Grab a newer kernel from www.kernel.org and compile it to fit only your specific hardware. Its not incredibly easy, make sure to pack through the kernel-how-to first.

Also, figure out whatever your system daemon manager is depending on GUI and distro and kill the daemons you don't need. The command 'top' tells you the total number of processes running. 100+ is a bit overkill these days, but with half a gig of ram on a P4 2.2, I doubt that you would notice.

The kernel firewalling is done with iptables. You can fiddle with all sorts of commercial/non-commercial products out there. Smoothwall is a favorite. I don't know nearly as much about security as I should.

As a Posix compliant UNIX clone system, Linux is going to cache a ton of sleeping processes. Actually, if you let it run for a long time, it should hopefully fill up all of your RAM. This is a good thing as it knows what to flush and what to leave sleeping much better than Windows. Linux swap is still a fixed partition instead of windows poor implementation of a dynamic disk usage. The old rule of thumb was a swap twice the size of your RAM, but I have plenty of machines on months of uptime with a swap half the size of their RAM.

I've never heard of the kernel mis-reporting the RAM size, but there's plenty of FUD out there. Some of the RAM is going to be reserved for the kernel, so the total reported by 'top' should be a few hundred K short of the total, but that's it.

Luck,

Finegan
 
Old 04-06-2002, 06:37 PM   #3
drw
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Thanks

How do I run TOP..from a terminal window?
 
Old 04-06-2002, 06:44 PM   #4
finegan
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type 'top' from the command line, no kidding, just that easy.

Also, dude, double posting between forums is bad mojo. The mods go kazoo over that kind of thing.

Cheers,

Finegan
 
Old 04-06-2002, 06:53 PM   #5
drw
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Registered: Apr 2002
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Bottoms up

ok...ran top...all a.o.k.
looks like I got a learning curve ahead.
and , thanks for the friendly advice about the dub post...oops.
 
  


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