Re: reiser4 and 2.5.60

[Ookhoi <ookhoi@humilis.net>]

Oleg Drokin wrote (ao):
> > > > Sure. It is a P-MMX, 200MHz, with 512MB ram, and a 4GB scsi disk.
> > >
> > > Hm. That must be real slow, is it? (just because not all of the
> > > RAM is covered by L2 cache, I mean. Or do you have some sensible
> > > chipset in there?).
> >
> > It is slow, but I am not aware of issues with too little L2 cache.
> 
> Well, some common chipsets of that time could only cache limited
> amounts of RAM (64Mb for TX or VX chipsets, 256Mb for some other
> chipsets I dont remember about).
> Accesses to RAM regions that are not cached are awfully slow.
> But these accesses are still faster than hitting HDD ;)
> So the "slram" driver was developed that allowed to use
> non-cached memory as a RAM-disk for swap usage.

Ah, thanks for the info!

> > quick look at dmesg didn't give me more clue. Can you please explain
> > a bit, or give some google keywords?
> 
> There is some sensible (from a quick look) article at
> http://www.computerwriter.com/archives/1998/cw050798.htm
>
> > It is only 200MHz, so I expect it to be slow, but if I can make it
> > faster that would be nice (without removing the ram if possible ;-)
> 
> Well, try to remove the ram, first to make it to be only 256M then 64M
> and see if the system becomes faster at trivial non-memory hungry
> stuff.

I can boot it with mem=64M. And try to unzip something large a few
times.

> If this is indeed the case, consider changing motherboard/increasing
> L2 cache size (hard to do nowadays, when you cannot buy even P3
> equipment easily ;) ).
> Nothing else comes to mind.

Owh, never mind, I'll save some money for a new one ..