Check the dns resolution for the xyz host. Sent from my phone
On Dec 9, 2010 1:24 PM, "Craig A. James" <cja...@emolecules.com> wrote: We operate one public web site and about 20 private web sites. They're all the same server, running the same Apache server instance (2.2.14-5ubuntu8.3). Most customers get excellent performance, but two customers get terrible response times, but only on *some* of the VirtualHosts. They get excellent responses from our public site, but the very same page served from a private site can take over a minute to load. The VirtualHosts are configured identically except for the "Allow from" and "ServerName" directives. As far as I can tell, everything else is identical (except the specific database it uses, but for these tests we're only loading static HTML pages). It appears that "www.ourdomain.com" VirtualHosts always work, but " xyz.ourdomain.com" VirtualHosts give problems. Examining TCP/IP traffic using WireShark, it looks like the slow virtual hosts are dropping ACK packets. Each TCP/IP conversation starts out fast, but then there's a 5-second gap in the middle of every HTTP response. Yet if the very same user accesses a different VirtualHost, there is no problem at all. We've been trying to figure this out for weeks with no luck. Any ideas would be greatly appreciated. Craig --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org " from the digest: users-digest-unsubscr...@httpd.apache.org For additional commands, e-mail: users-h...@httpd.apache.org
