DNS SERVFAIL in wpad.dat causes freeze up for 30 seconds
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
firefox-3.0 (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: firefox-3.0
Hi,
looking at this page on the wiki yesterday,
https:/
the logo image which has address
http://
was causing problems as it seems its DNS server was down. I watched the tcpdump and watched 40 seconds of request for an A record, 8-10 seconds, then a SERVFAIL, then that process 2-3 times more. All through this 30-40 seconds, firefox was completely frozen with the screen not even repainting.
This issue probably only happens where a DNS server is down (ie where you get to wait for a SERVFAIL as opposed to a NXDOMAIN which would happen quickly), but it's pretty awful when it happens.
I suspect the issue is probably an upstream one but I'm putting it here first in case there's a patch or setting in the ubuntu packaging which is causing it.
Gavin
same issue as mentioned in bug 213290 and bug 203793 ?
Can you please provide a log-file as mentioned in http:// www.mozilla. org/projects/ netlib/ http/http- debugging. html ?
And can you also post your proxy.pac file, it might contain a DNS-lookup on its own (using isResolvable, isInNet, dnsResolve). Hide your private information if necessary.