Re: SOLVED: performance problems with horde
Jan Schneider <[email protected]>
| Newsgroups | gmane.comp.horde.devel |
|---|---|
| Message-ID | <[email protected]> |
Zitat von Sebastian Birnbach <[email protected]>: > All, > > thanks again for bearing with me. I finally (!!) solved my performance > problems and they were - surprise! - related to DNS. > > In resolv.conf I had defined a secondary nameserver that now turned out not > to respond at all. For some reason it got queried every time Horde > processed a HTTP request. I have no clue > * why the secondary DNS was called at all > * why the secondary DNS was queried before the primary and > * why this didn't affect other PHP applications like phpMyAdmin. > Af any of you dev guys wants to know more I am ready to perform any test > you like. > > > I also noticed that pear application DNS2 throws errors like this on every > request: > > Jun 14 21:35:00 max HORDE: PHP ERROR: Undefined offset: 1 [pid 6887 on line > 416 of "/usr/local/share/pear/Net/DNS2.php"] > > I experimentally put some debugging code two lines above the referenced > statement to dump $line and this it what it yields: > > Jun 14 21:41:51 max HORDE: line is [removed name of domain in this example] > Jun 14 21:44:55 max HORDE: line is nameserver 192.168.0.10 > Jun 14 21:44:55 max HORDE: line is options:timeout:1 > Jun 14 21:44:55 max HORDE: PHP ERROR: Undefined offset: 1 [pid 6934 on line > 418 of "/usr/local/share/pear/Net/DNS2.php"] > > It seems like the timeout options for a DNS query doesn't get processed > properly. The default timeout seems to be 5 seconds, which makes the > picture complete: > > + HTTP request coming in > + DNS lookup is done on secondary DNS > + processing of timeout = 1 second fails so that timeout = 5 seconds > + after 5 seconds the primary DNS is queried > + processing continues with good speed. > > > Well, well, well, this little problem kept me way too long but finally I > mastered it. Feel free to comment (or congratulate :) > > Sebastian > -- > dev mailing list > Frequently Asked Questions: http://wiki.horde.org/FAQ > To unsubscribe, mail: [email protected] You should report this to http://pear.php.net/package/Net_DNS2 -- Jan Schneider The Horde Project http://www.horde.org/ https://www.facebook.com/hordeproject -- dev mailing list Frequently Asked Questions: http://wiki.horde.org/FAQ To unsubscribe, mail: [email protected]