Messages in this thread | | | Date | Wed, 18 Jun 2003 14:17:59 +0200 | From | Mike Galbraith <> | Subject | Re: How do I make this thing stop laging? Reboot? Sounds like Windows! |
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At 01:02 PM 6/18/2003 +0200, Helge Hafting wrote: >On Wed, Jun 18, 2003 at 01:30:48PM +0400, Yaroslav Rastrigin wrote: >[...] > > Well, the problem is probably unsolvable on kernel level (kernel is > unaware of > > user's habits in app/mem usage), but I think it's pretty solvable on user > > level - give us a knob to tune VM's behavior. We mere mortals often know > > better how we will use our system's memory, and which apps we will be > > running. > >There are some knobs. There's the mlock call that disables >paging for whatever memory you want. > >xmms could easily stop skipping if it mlocks its own code >and data. Running it at elevated priority might also >be a good idea, so cpu hogs don't starve it.
Unless it's having trouble getting music into ram fast enough. It doesn't skip here unless I'm pushing hard on the pagecache.
>Both of these needs root pribileges, or at least a suid >binary. (The priority stuff _can_ be done without extra >privileges by nicing every _other_ process instead.) > > > I, for myself, like laptop-mode patch (basically, it groups disk > > writes to do them once in 5-10 minutes, thus allowing hdd to sleep a lot) > > very much - when I'm on AC, most probably I'm in office , and turning > it off > > is reasonable. When I'm on battery, though, chances are I won't be > compiling > > the kernel and/or do other heavy disk IO, instead, I most likely will be > > coding, so echo 1 >/proc/sys/vm/laptop_mode seems appropriate, > reasonable and > > useful. > > Could something like this be done with VM/swap policy ? > > >Sure. Take a look at /proc/sys/vm/swappiness for example. >More stuff like this can be made - by those interested. > >The original poster also fixed the problems by doing >swapoff -a ; swapon -a...
I don't understand that. Here, I can swap heftily and not skip.
-Mike
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