Summary: | ASTERISK-02636: 'asterisk -r -x "show channels"' often returns no channel information | ||
Reporter: | Lee Howard (faxguy) | Labels: | |
Date Opened: | 2004-10-19 15:47:13 | Date Closed: | 2004-10-19 16:12:59 |
Priority: | Minor | Regression? | No |
Status: | Closed/Complete | Components: | Core/General |
Versions: | Frequency of Occurrence | ||
Related Issues: | |||
Environment: | Attachments: | ||
Description: | Often, when there are channels in use and when, from the CLI, the "show channels" command lists the channels while the shell command, 'asterisk -r -x "show channels"' will not show show any channels in use. | ||
Comments: | By: Brian West (bkw918) 2004-10-19 16:10:10 UPDATE! 07/26/2004-13:20 <-- kinda old ya think? make update and try again. By: Tilghman Lesher (tilghman) 2004-10-19 16:12:59 There isn't very much that can be done about this. Basically, the problem is that there's no way to denote when a particular command is finished executing, so a brief hack is done like this: if there's a 100 millisecond pause between outputs, that's assumed to be the end of the output. Unfortunately, there are other reasons why a 100 millisecond pause might happen. For example, the thread execution could be interrupted by the kernel to schedule another thread, or it could be that a particular channel has been locked for more than 100 milliseconds, and the channel cannot be printed until the command gets a lock on it. The poll(2) that hacks in the 100 millisecond pause is in asterisk.c, around line 1434 if you want to mess with it, but this is not a fixable bug. Sorry. If you want a better method to query the channels, please use the manager interface. |