[Asterisk-bsd] MeetMe drift

[Corey Smith]

> On Fri, 27 Jul 2007 17:10:07 -0700, David G Lawrence wrote:
>    Attached is a slightly improved version of my ztdummy.c that should
> work if system HZ is larger than 1000.

I appreciate your help with this problem.  FWIW here are some zttest
results with and without your patch:

NTP is enabled on this host.  System not busy:

last pid: 35192;  load averages:  0.00,  0.00,  0.00        up
1+01:24:15  01:18:12
36 processes:  2 running, 34 sleeping
CPU states:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
Mem: 18M Active, 217M Inact, 118M Wired, 32K Cache, 111M Buf, 643M Free
Swap: 2022M Total, 2022M Free


# uname -a
FreeBSD zttest 6.2-RELEASE-p4 FreeBSD 6.2-RELEASE-p4 #0: Wed May  2
15:19:20 EDT 2007     root at zttest:/usr/src/sys/i386/compile/CUSTOM
i386

# diff GENERIC CUSTOM
2c2
< # GENERIC -- Generic kernel configuration file for FreeBSD/i386
---
> # CUSTOM -- Generic kernel configuration file for FreeBSD/i386
19c19
< # $FreeBSD: src/sys/i386/conf/GENERIC,v 1.429.2.13 2006/10/09
18:41:36 simon Exp $
---
> # $FreeBSD: src/sys/i386/conf/CUSTOM,v 1.429.2.13 2006/10/09 18:41:36 simon Exp $
22,23d21
< cpu           I486_CPU
< cpu           I586_CPU
25c23
< ident         GENERIC
---
> ident         CUSTOM
28,30c26
< #hints                "GENERIC.hints"         # Default places to
look for devices.
<
< makeoptions   DEBUG=-g                # Build kernel with gdb(1) debug symbols
---
> #hints                "CUSTOM.hints"          # Default places to look for devices.
61a58
> device                carp

# pkg_info | egrep '^(asterisk|zaptel)'
asterisk-1.4.9      An Open Source PBX and telephony toolkit
zaptel-1.4.6_2      A FreeBSD Driver for FXO, FXS, BRI and PRI Telephony Cards

Normal zaptel:

# ( zttest > zttest.txt & ); sleep 300; killall -INT zttest; tail -2 zttest.txt
--- Results after 292 passes ---
Best: 100.000000 -- Worst: 98.449707 -- Average: 99.935727

With your ztdummy.c:

# ( zttest > zttest.txt & ); sleep 300; killall -INT zttest; tail -2 zttest.txt
--- Results after 292 passes ---
Best: 99.694824 -- Worst: 99.328613 -- Average: 99.529350

Digium says zttest should report > 99.98 for there not to be timing issues.

-Corey Smith