Hello,
# cat /proc/interrupts
CPU0
0: 2087872259 IO-APIC-edge timer
7: 0 IO-APIC-edge parport0
8: 1 IO-APIC-edge rtc
9: 1 IO-APIC-level acpi
14: 18440124 IO-APIC-edge ide0
15: 4456445 IO-APIC-edge libata
169: 4878102 IO-APIC-level eth0
177: 2086847525 IO-APIC-level wctdm24xxp
185: 2086810653 IO-APIC-level wct4xxp
NMI: 0
LOC: 2087921792
ERR: 0
MIS: 0
zttest is often on 99.975586% with final result:
--- Results after 67 passes ---
Best: 99.987793 -- Worst: 99.951172 -- Average: 99.973764
Where should I find good web pages for tuning? I had found this and using now:
setpci -v -s 04:06.0 latency_timer=ff
setpci -v -s 04:08.0 latency_timer=ff
As I remember it's give higher priority for Digium cards. The machine
is an IBM eServer x206 with P4 2.66 GHz processor.
bye,
Zsolt
On 9/23/06, Ma Zhiyong <[EMAIL PROTECTED]> wrote:
zttest don't disturb your other active calls. when you have 10-20
calls maybe got a better score.
also cat /proc/interrupt and 'lspci -vb' to find any IRQ interrupt on
your system.
2006/9/22, Artifex Maximus <[EMAIL PROTECTED]>:
> Hello,
>
> On 9/21/06, Lee Howard <[EMAIL PROTECTED]> wrote:
> > Artifex Maximus wrote:
> >
> > > Everything is fine when caller use ECM but when ECM isn't in use I
> > > often got unusable incoming faxes (much often that it should be). But
> > > when I switch back to fax machine that receive faxes perfectly (at
> > > least no visible error).
> > The fax machine itself uses ECM, undoubtedly.
> That's unfortunately not the case. The remote doesn't asks for ECM so
> that's disabled or missing on that machine. In this situation fax
> machine is produce better output and I don't know why. Might a better
> DSP algo?
>
> > If callers that have
> > quality problems with IAXmodem+HylaFAX don't have problems with the fax
> > machine, then that strongly indicates that something is wrong with your
> > Asterisk setup... corrupting the audio. Usually this is due to resource
> > constriction of the Zap device, zttest scores less than 99.98% is
> > indicative of that situation.
> I don't find any info that zttest is destructive or not on an active
> system. I mean that currently active calls are disturbed or not while
> zttest running. I can't stop system now. I look into zttest source and
> find that zttest is using /dev/zap/pseudo but I don't know this
> 'pseudo' channel is related to any 'real' channel or not.
>
> > > Where should be the problem? Is there any solution for improving
> > > quality? Any tuning in Asterisk or Hylafax? As I see some people use
> > > slinear for iaxmodem and some user use alaw. Which is better?
> > There is no functional difference between using uLaw, alaw, or
> > slinear... except that using slinear reduces the need for conversion...
> > and thus possibly lessens CPU usage very slightly.
> I see. I leave it on slinear.
>
> bye,
> Zsolt
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