Fw: some questions about memory management in BIND

[Gregory Hicks]

Did you up the ulimit in the named/BIND start up script?

It looks like resource starvation (file handles) to me...  But I could be 
wrong...

Regards,
Gregory Hicks

> Date: Mon, 18 Nov 2002 18:30:13 +0100
> From: "Joaquin J. Domens" <jdomens at corp.terra.es>
> To: BIND List <bind-users at isc.org>
> Subject: Fw: some questions about memory management in BIND
> 
> 
> 
> Forwarded by "Joaquin J. Domens" <jdomens at corp.terra.es>
> ----------------------- Original Message -----------------------
>  From:    "Joaquin J. Domens" <jdomens at corp.terra.es>
>  To:      BIND List <bind-users at isc.org>
>  Date:    Fri, 15 Nov 2002 14:45:13 +0100
>  Subject: some questions about memory management in BIND
> ----
> 
> 
> Hi all,
> 
> I`m having lot of troubles with one of my solaris running BIND.
> 
> We're trying to see what happens but at the moment we're without any ideas
> =3D2E...sysadmins says is all about BIND (it's supposed that it sholud the
> aplication the one who frees memory, not the O.S) but I don't think so....
> as we have other machines running same version without any problems.
> 
> I would like to know how does BIND manage the system memory
> I also would like to know if BIND tries to perform some kind of cache=3D20
> 
> 	This is the system configuration .......
> 
> System Configuration:  Sun Microsystems  sun4u Netra t1 (UltraSPARC-IIi 440=
> =3D
> MHz)
> System clock frequency: 110 MHz
> Memory size: 256 Megabytes
> 
> 	The other day I saw this on the messages file .........could be
> 	some kind of DOS attack?=3DBF
> 
> named[29721]: fcntl(rfd, F_DUPFD, 20): Too many open files
> named[29721]: fcntl(fd, F_DUPFD, 20): Too many open files
> named[29721]: fcntl(rfd, F_DUPFD, 20): Too many open files
> 
> 	Traffic on this interface (not in the busiest hour)
> 
> #netstat -I qfe2 1
>     input   qfe2      output           input  (Total)    output
> packets errs  packets errs  colls  packets errs  packets errs  colls=3D20
> -1267704555 2     1283208391 0     0      -1042796426 2     1474659767 0   =
> =3D
>   0    =3D20
> 639     0     637     0     0      643     0     640     0     0    =3D20
> 664     0     679     0     0      666     0     681     0     0    =3D20
> 678     0     696     0     0      686     0     704     0     0    =3D20
> 574     0     582     0     0      576     0     584     0     0    =3D20
> 676     0     700     0     0      678     0     702     0     0    =3D20
> 651     0     662     0     0      653     0     664     0     0    =3D20
> 606     0     600     0     0      610     0     604     0     0    =3D20
> 601     0     589     0     0      603     0     591     0     0    =3D20
> 609     0     613     0     0      611     0     615     0     0    =3D20
> 639     0     634     0     0      644     0     639     0     0    =3D20
> 584     0     621     0     0      586     0     623     0     0    =3D20
> 579     0     617     0     0      581     0     619     0     0    =3D20
> 656     0     662     0     0      658     0     664     0     0    =3D20
> 
> 	Options in named.conf
> options {
>         directory "/var/named";
>         version "[Secured]";
>         files 8192;
> };
> 
> Hope this helps=3D20
> 
> Thanks in advance.
> 
> --
> 
> 
> --------------------- Original Message Ends --------------------
> 
> --
> --------------------------------------------------
> Joaquin J. Domens
> =C1rea de Tecnolog=EDa
> Departamento de Producci=F3n / Aplicaciones
> --------------------------------------------------
> Terra Networks Espa=F1a S.A.
> Via dos Castillas 7, Pozuelo de Alarc=F3n
> Madrid, Espa=F1a
> Tel. (34) 91-452-33-71
> joaquin.domens at corp.terra.es
> --------------------------------------------------
> Mercado Continuo: TRR |  Nasdaq: TRLY
> --------------------------------------------------
> http://www.terra.es
> --------------------------------------------------
> 
> 

-------------------------------------------------------------------
Gregory Hicks                        | Principal Systems Engineer
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San Jose, CA 95134                   | Internet: ghicks at cadence.com

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