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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Netscape sites very slow today
This may be of interest to anyone who received complaints of slowness to the Netscape home page yesterday. You can't use anything in this message to configure your router. ---------- Forwarded message ---------- Date: Wed, 07 Jan 1998 14:48:44 -0700 From: Duane Wessels <[email protected]> To: [email protected] Cc: Jeff Halper <[email protected]> Subject: Re: Netscape sites very slow today Resent-Date: Wed, 7 Jan 1998 13:52:20 -0800 (PST) Resent-From: [email protected] Yesterday, Jeff Halper asked this on our squid-users list: >I use parent cache sv - noticed it was uusually slow in fetching sites at >netscape.com today - any suggestions? The problem turned out to be sort of interesting, so I thought I'd share it with you... First I thought I'd see if Jeff was imagining things or if there really was a difference. So I looked at the "service time" value for *.netscape.com requests from four days of access logs. The results were: Median Service Date Time (seconds) ----- -------------- Jan 3 2.47 Jan 4 3.47 Jan 5 5.81 Jan 6 76.17 So obviously, something was seriously wrong. The next thing to try was a simple ping: sv-wessels> ping www.netscape.com PING www-uk2.netscape.com (195.44.254.3): 56 data bytes 64 bytes from 195.44.254.3: icmp_seq=5 ttl=248 time=603 ms 64 bytes from 195.44.254.3: icmp_seq=6 ttl=248 time=550 ms Say what? WWW-UK2? sv.cache, located at FIX-West, uses ns.arc.nasa.gov for DNS service. Every time I checked the rest of that day, ns.arc.nasa.gov always returned www-uk2.netscape.com, even though the DNS TTL was quite low (less 15 minutes). dig @ns.arc.nasa.gov www.netscape.com ; <<>> DiG 2.0 <<>> @ns.arc.nasa.gov www.netscape.com ;; ->>HEADER<<- opcode: QUERY , status: NOERROR, id: 10 ;; flags: qr rd ra ; Ques: 1, Ans: 2, Auth: 3, Addit: 3 ;; QUESTIONS: ;; www.netscape.com, type = A, class = IN ;; ANSWERS: www.netscape.com. 94 CNAME www-uk2.netscape.com. www-uk2.netscape.com. 2344 A 195.44.254.3 Looks to me like some DNS smart-resolution feature gone haywire. I sent mail to [email protected], but have yet to get a reply. Since it seemed that ns.arc.nasa.gov was not going to "fix itself" any time soon, I changed sv's resolv.conf to use a different DNS server temporarily. Today, ns.arc.nasa.gov is giving us good answers (www24.netscape.com). Shrug. Duane W.
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