[Tickets #14056] Performance - DNS issues

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Ticket URL: https://bugs.horde.org/ticket/14056
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  Ticket             | 14056
  Created By         | arus at poczta.onet.pl
  Summary            | Performance - DNS issues
  Queue              | Horde Framework Packages
  Type               | Enhancement
  State              | New
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
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arus at poczta.onet.pl (2015-07-17 08:05) wrote:

Please add a paragraph to the documentation (performance guide at  
http://www.horde.org/apps/horde/docs/PERFORMANCE), that DNS query  
timeouts can terribly slow Horde. There is already a note about  
turning off dns lookups for Apache logging, but Horde makes calls to  
gethostbyaddr and gethostbyname in it's code, and dns timeouts can  
slow the application a lot (like: you must wait up to 10 seconds after  
every click). I had only one of three dns servers misconfigured and  
Horde was almost unusable, and finding the reason took too much time.
Maybe it can be fixed somehow in the code, but I leave it up to You.  
Appropriate guidelines in docs are enough for me.