sha256 a md5 vracaju rozne hodnoty

[Lubomir Host]

On Wed, Feb 15, 2006 at 02:29:30PM +0100, Dan Lukes wrote:
> Pav Lucistnik wrote:
> > Daniel v prvnim mailu zminil ze jde o Pentium 4 na 3.20 GHz coz presne
> > odpovida procesoru na kterem jsme tento problem pozorovali v nasi firme.
> 
> 	Pak je to zrejme zavisle na konkretnim "stepping", protoze tenhle 
> procesor mam, ale popsany problem vyvolat nedokazu.
> 
> 	Nicmene, stepping-patche pro procesor jsou skutecne soucasti BIOSu, 
> takze jeho update  by to mohl vyresit, tedy, pokud je to tim.

Uz dlhsie zo zaujmom sledujem toto vlakno a spomenul som si na podobny
problem so SMP systemom, ktory som mal ja pred 260 dnami.

Mam postarsi server s 2x Pentium III.  Nainstaloval som na neho Debian
GNU/Linux, ale server vykazoval nestability. Proste po nahodnej dobe (3
min - cca nekonecno) vytuhol.  Vobec to nesuviselo s vytazenim servera.
Teoreticky by mohlo ist o podobny problem aj s FreeBSD (akurat tam to
nevytuhne, ale vyrata zly checksum).

Patral som po tomto probleme a nasiel som v Debiane tento balik:

----------------------------------%<----------------------------------
# apt-cache show microcode.ctl
Description: Intel IA32/IA64 CPU Microcode Utility
 The microcode_ctl utility is a companion to the IA32 microcode driver
 written by Tigran Aivazian <tigran at veritas.com>. The utility has two
 uses:
 .
 a) it decodes and sends new microcode to the kernel driver to be
    uploaded to Intel IA32 family processors. (Pentium Pro, PII,
    Celeron, PIII, Xeon, Pentium 4, etc.) and the Intel x86_64
    family processors
 b) it signals the kernel driver to release any buffers it may hold
 .
 The microcode update is volatile and needs to be uploaded on each
 system boot i.e. it doesn't re-flash your CPU permanently, reboot and
 it reverts back to the old microcode. The ideal place to load
 microcode is in BIOS, but most vendors never update it!
 .
 To enable microcode update, I need some kernel support, thus I need
 the linux kernel 2.2.18 or later, or 2.4.0 or later.
----------------------------------%<----------------------------------

Po nainstalovani server bezi maximalne stabilne. Max. zaznamenany load
pocas tejto prevadzky bol 170 (namerat vacsi load sa uz prakticky ani
neda ;-). Dalsie podrobnosti:

http://www.mreriksson.net/uptimes/viewhost/?1220

-----------------------------------%<-----------------------------------
# uptime
 18:19:07 up 260 days,  8:14,  5 users,  load average: 0.14, 0.15, 0.10
-----------------------------------%<-----------------------------------

--------------------------------------------------%<--------------------------------------------------
# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 8
model name      : Pentium III (Coppermine)
stepping        : 6
cpu MHz         : 998.857
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips        : 1974.27

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 8
model name      : Pentium III (Coppermine)
stepping        : 10
cpu MHz         : 998.857
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips        : 1994.75
--------------------------------------------------%<--------------------------------------------------

---------------------------------------------------------%<---------------------------------------------------------
# lspci
0000:00:00.0 Host bridge: VIA Technologies, Inc. VT82C693A/694x [Apollo PRO133x] (rev c4)
0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AGP]
0000:00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40)
0000:00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
0000:00:07.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 16)
0000:00:07.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 16)
0000:00:07.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)
0000:00:09.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] (rev 30)
0000:01:00.0 VGA compatible controller: ATI Technologies Inc 3D Rage IIC AGP (rev 7a)
---------------------------------------------------------%<---------------------------------------------------------



-- 
Lubomir Host 'rajo' <rajo AT platon.sk>   ICQ #:  257322664   ,''`.
Platon Group                              http://platon.sk/  : :' :
Homepage: http://rajo.platon.sk/                             `. `'
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