Hi Nick,
----- "Nick" <list@xxxxxxxxxxxxxxxxxxxxxx> escreveu:
> Running Centos 5 (32bit)... running a server with 4gb of RAM and it's
> shows up as:
>
> [root@ubercore1 ~]# free
> total used free shared buffers
> cached
> Mem: 3369544 2549668 819876 0 29008
> 2382360
> -/+ buffers/cache: 138300 3231244
> Swap: 6291448 0 6291448
>
> I know 4gb is the limit for a 32bit OS but i thought it would be able
> to use all of it? Is there another kernel i was supposed to install?
I have almost the same issue here :) what I can advice is to take a look
on the reserved memory on boot (using dmesg), but I didn't know what can
be done to change it. Take a look:
---> CentOS-5.0 (x86_64) on HP-DL380G4 (4GB)
[root@Suzuka ~]# dmesg |more
Bootdata ok (command line is ro root=/dev/sys/root rhgb quiet)
Linux version 2.6.18-8.1.8.el5xen (mockbuild@xxxxxxxxxxxxxxxxxxx) (gcc version 4
.1.1 20070105 (Red Hat 4.1.1-52)) #1 SMP Tue Jul 10 07:06:45 EDT 2007
<... cut ...>
Memory: 3772028k/3933628k available (2321k kernel code, 152780k reserved, 1312k
data, 168k init)
The "free" command on this machine reports less memory because of Xen.
[root@Suzuka ~]# free
total used free shared buffers cached
Mem: 3032064 3024120 7944 0 15472 313564
-/+ buffers/cache: 2695084 336980
Swap: 4194296 1280636 2913660
But "xentop" reports aprox. 4GB:
xentop - 11:02:21 Xen 3.0.3-rc5-8.1.8.el
3 domains: 3 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 4128324k total, 4127496k used, 828k free CPUs: 4 @ 3400MHz
---> CentOS-4.5 (i386) on SuperMicro MoBo
[root@Sakhir ~]# dmesg |more
Linux version 2.6.9-55.0.2.ELsmp (mockbuild@xxxxxxxxxxxxxxxxxxx) (gcc version 3.
4.6 20060404 (Red Hat 3.4.6-8)) #1 SMP Tue Jun 26 14:30:58 EDT 2007
<... cut ...>
Memory: 4149888k/4587520k available (1883k kernel code, 42852k reserved, 761k da
ta, 188k init, 3276224k highmem)
[root@Sakhir ~]# free
total used free shared buffers cached
Mem: 4151980 4100544 51436 0 233316 1579404
-/+ buffers/cache: 2287824 1864156
Swap: 2104504 192 2104312
I don't know why, but on my HP machine CentOS always recognized less memory,
with both CentOS4 and CentOS5 64bits, I had SLES9-x86_64 on that machine and it
used all 4GB. And on the SuperMicro with 32bits OS I'm using all 4GB, but didn't
try CentOS5 on it yet.
Hope this data helps someone on this issue :)
Antonio
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| Antonio S. Martins Jr. - Support Analist | "Only The Shadow Knows |
| Universidade Estadual de Maringá - Brasil| what evil lurks in the |
| NPD - Núcleo de Processamento de Dados | Heart of Men!" |
| E-Mail: asmartins@xxxxxx / shadow@xxxxxx | !!! Linux User: 52392 !!! |
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--
Esta mensagem foi verificada pelo sistema de antiv�s e
acredita-se estar livre de perigo.
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