4GB RAM na RHEL5

[Martin Edlman]

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Zdravim,

	mame server se 4GB RAM a na nem RHEL5 i386. dmesg vypisuje

Warning only 4GB will be used.
Use a PAE enabled kernel.
3200MB HIGHMEM available.
896MB LOWMEM available.
found SMP MP-table at 000fd190
Using x86 segment limits to approximate NX protection
On node 0 totalpages: 1048576
~  DMA zone: 4096 pages, LIFO batch:0
~  Normal zone: 225280 pages, LIFO batch:31
~  HighMem zone: 819200 pages, LIFO batch:31

	Coz je snad ok, vic nez 4GB nemame, takze je nam PAE snad netreba, ale
o kousek dal vypisuje:

Memory: 2574200k/4194304k available (2043k kernel code, 40100k reserved,
846k data, 232k init, 1698124k highmem)

coz je podstatne min nez bychom od nej cekali. Takove hodnoty vypisuje i
free

~         total       used       free     shared    buffers     cached
Mem:   2577652    2452412     125240          0      10516    2269832
- -/+ buffers/cache:     172064    2405588
Swap:      1048568         76    1048492

Zadny bigmem ani highmem kernel v RHEL5 neni, co jsem nasel na netu, tak
"I believe that since RHEL4 the default installed 2.6.9 kernel will
handle large amounts of memory just fine. Red Hat puts artificial limits
on their kernel but even in WS it is like 16GB."
...
"Ok, once more - figured this out - to support more than 4GB RAM on RHEL
AS 5 32-bit machines, you must install the PAE kernel."

Coz neni nas pripad, my nemame vic nez 4GB.

Takze se ptam, pouziva nas system cele 4GB a rozumime spatne vypisu free
nebo pouziva jen cast pameti? Jak rici jadru, aby ji pouzival celou?


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S pozdravem,

Martin Edlman
Fortech, spol. s r.o,
Ropkova 51, 57001 Litomyšl
Public GPG key: http://edas.visaci.cz/#gpgkeys
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