Hi Jinmei,
do you specify a sufficiently large value for max-cache-size? (maybe if you
can post your named.conf that would be helpful)
--> we've set :
max-cache-size 2500M;
recursive-clients 50000;
does the trouble keep happening, or is that something like a spike-type
trouble (which then subsides)?
--> it keeps happening, but the the rate differs, eg: sometimes the errors
come out more slowly, sometimes much much faster
if you perform 'rndc recursion' during the errors are happening, do you see
anything strange in the corresponding named.recursing file? For example, are
there clients that are too old, i.e., should be timed out but not?
--> nothing strange here so far, but will need to keep looking.
Thx!
----- Original Message -----
From: "JINMEI Tatuya / ????" <[EMAIL PROTECTED]>
To: "Elias" <[EMAIL PROTECTED]>
Cc: <bind-users@isc.org>
Sent: Thursday, August 07, 2008 3:59 PM
Subject: Re: Issues with BIND 9.5.0-P2
> At Thu, 7 Aug 2008 14:48:52 +0800,
> "Elias" <[EMAIL PROTECTED]> wrote:
>
>> Is there any change if you build named with/without threads (and with
>> FD_SETSIZE=4096)?
>> --> have yet to try this. Will test and let you know.
>>
>> How many queries per second is that server normally accepting?
>> --> we're seing about 4.2k - 5.5k requests per second.
>>
>> What's the normal cache hit rate (you can identify it via rndc stats
>> outputs)?
>> --> cache hit rate now is around 81.78%
>
> Okay, some more questions:
>
> - do you specify a sufficiently large value for max-cache-size? (maybe
> if you can post your named.conf that would be helpful)
> - does the trouble keep happening, or is that something like a
> spike-type trouble (which then subsides)?
> - if you perform 'rndc recursion' during the errors are happening, do
> you see anything strange in the corresponding named.recursing file?
> For example, are there clients that are too old, i.e., should be
> timed out but not?
>
> ---
> JINMEI, Tatuya
> Internet Systems Consortium, Inc.
