Fw: some questions about memory management in BIND
Joaquin J. Domens
jdomens at corp.terra.es
Mon Nov 18 17:30:13 UTC 2002
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 --------------------
--
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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
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