High loading of bind

[Alex Tang]

more information

when the dns no response, the cpu loading is 1or 1.1 and name process usage 49.5% , network usage 1.6M, query about 460 per second

-----Original Message-----
From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org]On
Behalf Of Alex Tang
Sent: Friday, January 13, 2006 11:22 AM
To: barmar at alum.mit.edu; comp-protocols-dns-bind at isc.org;
bind8-bugs at isc.org
Subject: High loading of bind
Importance: High


Hi all

my cache dns server working in high cpu utilization. How can I change some config to increase the dns capacity ? The dns server cannot reponse any query or very slow when about 49% usage

bind version: 8.37
SunOS  5.8 Generic_108528-26 sun4u sparc SUNW,Sun-Fire-V210
a lot of disk space

load averages:  0.88,  0.86,  0.85                                                dns3                                                10:53:40
45 processes:  42 sleeping, 1 stopped, 2 on cpu
CPU states: 63.3% idle, 34.6% user,  2.1% kernel,  0.0% iowait,  0.0% swap
Memory: 2.0G real, 1.1G free, 399M swap in use, 5.1G swap free

   PID USERNAME THR PR NCE  SIZE   RES STATE   TIME FLTS    CPU COMMAND
  1873 named      1  0   0  298M  297M cpu01  49.5H    0 43.82% named

Network speed is 100M, full duplex

350 query per second

13-Jan-2006 10:17:48.085 statistics: info: XSTATS 1137118668 1136885061 RR=23300950 RNXD=2189861 RFwdR=6038937 RDupR=32995 RFail=247234 RFErr=175250 RErr=356434 RAXFR=0 RLame=3245748 ROpts=0 SSysQ=954185 SAns=75580275 SFwdQ=17877768 SDupQ=19685968 SErr=0 RQ=84445818 RIQ=0 RFwdQ=17877768 RDupQ=3743304 RTCP=6469 SFwdR=6038937 SFail=1417262 SFErr=0 SNaAns=64331838 SNXD=15246746 RUQ=0 RURQ=0 RUXFR=0 RUUpd=0
13-Jan-2006 10:22:48.085 statistics: info: USAGE 1137118968 1136885061 CPU=0u/0s CHILDCPU=0u/0s
13-Jan-2006 10:22:48.085 statistics: info: NSTATS 1137118968 1136885061 TYPE0=495011 A=60820868 NS=6568 MD=7704 CNAME=1661 SOA=89399 PTR=3971917 MX=17716519 TXT=34298 AAAA=1292656 SRV=93499 NAPTR=36 A6=11332 ANY=21505
13-Jan-2006 10:22:48.085 statistics: info: XSTATS 1137118968 1136885061 RR=23328533 RNXD=2192283 RFwdR=6045480 RDupR=33039 RFail=248187 RFErr=175486 RErr=356791 RAXFR=0 RLame=3249375 ROpts=0 SSysQ=955219 SAns=75689054 SFwdQ=17898137 SDupQ=19700988 SErr=0 RQ=84563191 RIQ=0 RFwdQ=17898137 RDupQ=3747037 RTCP=6476 SFwdR=6045480 SFail=1422045 SFErr=0 SNaAns=64427400 SNXD=15268712 RUQ=0 RURQ=0 RUXFR=0 RUUpd=0