[Asterisk-Users] Zaptel Anti-MMX Optimizations

[Trevor Peirce]

Hello,

Running Fedora Core 2 with a Celeron processor I'm seeing a significant 
problem when enabling MMX optimizations.

I'll gladly submit a bug report, but I don't know what information is 
useful.

First, with -no- MMX optimizations enabled, here is what I see

CLI> show translation
        Translation times between formats (in milliseconds)
         Source Format (Rows) Destination Format(Columns)

        g723   gsm  ulaw  alaw  g726 adpcm  slin lpc10  g729 speex  ilbc
  g723     -     -     -     -     -     -     -     -     -     -     -
   gsm     -     -     2     2     3     2     1    11    18     -    24
  ulaw     -     5     -     1     3     2     1    11    18     -    24
  alaw     -     5     1     -     3     2     1    11    18     -    24
  g726     -     6     3     3     -     3     2    12    19     -    25
 adpcm     -     5     2     2     3     -     1    11    18     -    24
  slin     -     4     1     1     2     1     -    10    17     -    23
 lpc10     -     7     4     4     5     4     3     -    20     -    26
  g729     -     7     4     4     5     4     3    13     -     -    26
 speex     -     -     -     -     -     -     -     -     -     -     -
  ilbc     -     8     5     5     6     5     4    14    21     -     -

If I enable MMX_OPTIMIZATIONS (and change nothing else), it gets quite 
worse....

CLI> show translation
        Translation times between formats (in milliseconds)
         Source Format (Rows) Destination Format(Columns)

        g723   gsm  ulaw  alaw  g726 adpcm  slin lpc10  g729 speex  ilbc
  g723     -     -     -     -     -     -     -     -     -     -     -
   gsm     -     -     2     2     3     2     1    48    20     - 446270
  ulaw     -     5     -     1     3     2     1    48    20     - 446270
  alaw     -     5     1     -     3     2     1    48    20     - 446270
  g726     -     6     3     3     -     3     2    49    21     - 446271
 adpcm     -     5     2     2     3     -     1    48    20     - 446270
  slin     -     4     1     1     2     1     -    47    19     - 446269
 lpc10     -   368   365   365   366   365   364     -   383     - 446633
  g729     -    23    20    20    21    20    19    66     -     - 446288
 speex     -     -     -     -     -     -     -     -     -     -     -
  ilbc     -   266   263   263   264   263   262   309   281     -     -


And just incase you think I've got an AMD, here you go...


processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 1
model name      : Intel(R) Celeron(R) CPU 1.70GHz
stepping        : 3
cpu MHz         : 1716.114
cache size      : 128 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 mtrr pge mca 
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips        : 3399.68


If this isn't supposed to work with Celerons I'd like to update the 
documentation. On the other hand if it's a problem with my system I'd 
like to resolve it :)

TIA!