Hello Steinar, On Thu, Mar 31, 2016 at 07:35:39PM +0200, sth...@nethelp.no wrote: > Have you checked your operating system limits? One recursive client > often means one open socket (waiting for response from authoritative > server), i.e. one open file descriptor. If you have thousands of > simultaneous recursive clients, you will need a correspondingly large > file descriptor limit for the named process. > > Remember that a (presumed) authoritative server which is slow to > answer means that the socket may be held open correspondingly long.
The process can use up to 65536 file descriptors and the failed lookups also occur in other processes that only do one lookup. Regards, Michael Brunnbauer -- ++ Michael Brunnbauer ++ netEstate GmbH ++ Geisenhausener Straße 11a ++ 81379 München ++ Tel +49 89 32 19 77 80 ++ Fax +49 89 32 19 77 89 ++ E-Mail bru...@netestate.de ++ http://www.netestate.de/ ++ ++ Sitz: München, HRB Nr.142452 (Handelsregister B München) ++ USt-IdNr. DE221033342 ++ Geschäftsführer: Michael Brunnbauer, Franz Brunnbauer ++ Prokurist: Dipl. Kfm. (Univ.) Markus Hendel
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