[Freeswitch-users] failed to wait for I/O

[Troy Anderson]

Thanks for the code change providing additional diagnostics.  I finally saw another call drop, but didn't have full logging on at the time.  The additional logging provided the following:

2010-11-12 11:12:54.906656 [ERR] ftmod_zt.c:904 [s1c23][1:23] Failed to poll DAHDI device: Interrupted system call
2010-11-12 11:12:54.906656 [ERR] ftmod_zt.c:904 [s1c19][1:19] Failed to poll DAHDI device: Interrupted system call
2010-11-12 11:12:54.906656 [WARNING] mod_freetdm.c:660 failed to wait for I/O
2010-11-12 11:12:54.906656 [WARNING] mod_freetdm.c:660 failed to wait for I/O
2010-11-12 11:12:54.906656 [ERR] ftmod_zt.c:904 [s1c20][1:20] Failed to poll DAHDI device: Interrupted system call
2010-11-12 11:12:54.906656 [WARNING] mod_freetdm.c:660 failed to wait for I/O
2010-11-12 11:12:54.906656 [ERR] ftmod_zt.c:904 [s1c21][1:21] Failed to poll DAHDI device: Interrupted system call
2010-11-12 11:12:54.906656 [WARNING] mod_freetdm.c:660 failed to wait for I/O

I'll turn up logging and see what shows up next time, but any ideas on what may cause this?

Thanks!
Troy

On Nov 6, 2010, at 2:17 PM, Moises Silva wrote:

> On Fri, Nov 5, 2010 at 12:58 PM, Troy Anderson
> <freeswitch at tlainvestments.com> wrote:
>> We have an installation with a dual PRI and lots of call volume.  Among many successful calls each day, we have been experiencing a one or two dropped per day, and they always coincide with a "failed to wait for I/O" warning from mod_freetdm.  I have attempted to track down the root cause in the source and by poring over the logs, but cannot figure it out.  I have included the redacted logs here.  The log file in question is 10MB and has lots of call data that doesn't relate - I know I risked removing something important, but I tried to put in all the data related to this call.
>> 
>> I appreciate any insights or advice on tracking this down.
>> 
> 
> If you update your git tree you will be able to get more information
> the next time it happens. I added some code to print the reason for
> that error to happen.
> 
> Moises Silva
> Senior Software Engineer
> Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON
> L3R 9R6 Canada
> t. 1 905 474 1990 x128 | e. moy at sangoma.com
> 
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