Question about vlc: you will need Linux kernel 2.4.x or later

[Mac Mason]

You're just fine with 2.2.16 (although I would very strongly suggest
upgrading to 2.2.20 to get rid of the newgrp local root and remote DoS
attacks)
As far as I know, kernel support for SSE doesn't exist in 2.4
Also, to see what a cpu with SSE looks like, here's
#cat /proc/cpuinfo on my athlonxp 1600+:

processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 6
model           : 6
model name      : AMD Athlon(tm) 4 processor
stepping        : 2
cpu MHz         : 1401.734
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
bogomips        : 2798.38

Note how "flags" includedes sse.
I believe that PIII's don't have it. 
SSE won't make any great difference, it's really just a small
improvement.
(SSE2, on the other hand, can make a tremendous difference for software
that's aware of it)

~Mac~




On Sat, 2002-01-05 at 16:04, jgcc at pacbell.net wrote:
> Afterdownloading the vlc code and libdvdcss-1.0.0, I apparently
> compiled vlc, but received the following warning:
> 
> bash-2.04$ ./vlc
> warning: your OS doesn't have support for SSE instructions, some optimizations
> will be disabled
> (you will need Linux kernel 2.4.x or later)
> VideoLAN Client - version 0.2.92_2002-01-05 Ourumov - (C)1996-2001 VideoLAN
> 
> 1) I am running on a dual cpu Intel PIII (550 Mhz). I suppose this means
> that my chipset does not support SSE? Do I understand this
> correctly?
> 
> Here is the data on my cpus from /proc:
> 
> processor	: 0
> vendor_id	: GenuineIntel
> cpu family	: 6
> model		: 7
> model name	: Pentium III (Katmai)
> stepping	: 3
> cpu MHz		: 551.259
> cache size	: 512 KB
> fdiv_bug	: no
> hlt_bug		: no
> sep_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 xmm
> bogomips	: 1101.00
> 
> processor	: 1
> vendor_id	: GenuineIntel
> cpu family	: 6
> model		: 7
> model name	: Pentium III (Katmai)
> stepping	: 3
> cpu MHz		: 551.259
> cache size	: 512 KB
> fdiv_bug	: no
> hlt_bug		: no
> sep_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 xmm
> bogomips	: 1101.00
> 
> 
> 2) However, do I understand correctly that I cannot really run vlc
> unless I upgrade my kernel to 2.4? I have a production environment
> on my main machine which runs 2.2.16 very reliably and cannot afford
> to upgrade to 2.4 here for another couple of months.
> 
> Can I go out and buy a DVD player now, or must I wait until I can
> run 2.4 to play dvds with vlc?
> 
> 
> Thank you very much for any help.
> 
> Jeff Collins
> jgcc at pacbell.net
> 
> 
>