Re: [CentOS] OT: Slow browsers or slow connections?
On Tue, 2007-11-13 at 16:09 +1000, [EMAIL PROTECTED] wrote: First thing that comes to mind is DNS; Has your DNS servers changed and you have them hardcoded in /etc/resolv.conf or similar ? Nope - no such file. Are the seamonkey/firefox browsers going through a proxy ? Nope - direct connect. The problem went away after a few hours - DSL congestion maybe? I got a new router yesterday, a DLink WBR 2310, and it has a slightly different problem - it is slow to connect to all web sites, but once connected, it behaves wonderfully. mhr ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Slow browsers or slow connections?
Mark Hull-Richter wrote: On Tue, 2007-11-13 at 16:09 +1000, [EMAIL PROTECTED] wrote: First thing that comes to mind is DNS; Has your DNS servers changed and you have them hardcoded in /etc/resolv.conf or similar ? Nope - no such file. Are the seamonkey/firefox browsers going through a proxy ? Nope - direct connect. The problem went away after a few hours - DSL congestion maybe? I got a new router yesterday, a DLink WBR 2310, and it has a slightly different problem - it is slow to connect to all web sites, but once connected, it behaves wonderfully. mhr ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos create a /etc/resolv.conf in the format nameserver IP.OF.YOUR.NAMESERVER You may want try using a third part DNS server. There are a couple free services out there. OpenDNS being one. Perhaps your name servers are slow. -- James A. Peltier Technical Director, RHCE SCIRF | GrUVi @ Simon Fraser University - Burnaby Campus Phone : 778-782-3610 Fax : 778-782-3045 Mobile : 778-840-6434 E-Mail : [EMAIL PROTECTED] Website : http://gruvi.cs.sfu.ca | http://scirf.cs.sfu.ca MSN : [EMAIL PROTECTED] ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
RE: [CentOS] OT: Slow browsers or slow connections?
On Tue, 2007-11-13 at 11:54 -0500, Ross S. W. Walker wrote: 3 possible scenarios: 1) DNS not properly configured Make sure your resolv.conf is properly configured, if you are doing DHCP look into having your resolv.conf set through it, if you are using PPPOE you can have the ppp daemon set it too if the DNS is passed over the ppp connection. Don't have a resolve.conf. 2) TCP MTU and blackhole router if PPPOE If you are doing PPPOE then make sure the MTU on the ppp interface link is set to 1492 as pppoe uses 8 bytes for ppp framing. If it is set to 1500 then some large packets will drop and the stack will have to resend smaller and smaller till it goes through. If ICMP need to frag messages are dropped then the connections will stall completely. 1492, by default. 3) TCP scaling window and broken router The latest CentOS uses the TCP scaling window algorithm to the RFC spec which some routers don't support. Some people have noticed that this solves the problem when communicating to other hosts over the Internet. sysctl -w net.ipv4.tcp_window_scaling=0 I tried it - will see. BTW, this wouldn't muck up my keyboard shortcuts, would it? I noticed that after I executed this, some of them stopped working - again. mhr ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Slow browsers or slow connections?
Mark Hull-Richter wrote: On Tue, 2007-11-13 at 11:54 -0500, Ross S. W. Walker wrote: 3 possible scenarios: 1) DNS not properly configured Make sure your resolv.conf is properly configured, if you are doing DHCP look into having your resolv.conf set through it, if you are using PPPOE you can have the ppp daemon set it too if the DNS is passed over the ppp connection. Don't have a resolve.conf. no /etc/resolv.conf means no DNS name resolution. are you SURE of this? its `resolv` without an e. mine often look like... $ cat /etc/resolv.conf search hogranch.com nameserver 127.0.0.1 nameserver 66.117.136.6 nameserver 66.117.151.5 (localhost is first because I'm running my own DNS caching server on that system, used by my LAN, the other two are my ISP's primary lookup servers) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Slow browsers or slow connections?
On Wed, 14 Nov 2007 11:48:19 -0800 James A. Peltier [EMAIL PROTECTED] wrote: Nope - no such file. Are the seamonkey/firefox browsers going through a proxy ? Nope - direct connect. Have you disabled ipv6 in Firefox? It's a well know behaviour of Firefox. about:config network.dns.disableipv6 set to true. -- Thanks http://www.911networks.com When the network has to work ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
RE: [CentOS] OT: Slow browsers or slow connections?
Mark Hull-Richter wrote: On Nov 14, 2007 12:06 PM, John R Pierce [EMAIL PROTECTED] wrote: no /etc/resolv.conf means no DNS name resolution. are you SURE of this? its `resolv` without an e. Yeah - I need new glasses Thanks. If you are doing pppoe (which I think you mentioned you were) you can set the ppp daemon to config your resolv.conf with your ISPs name servers automatically. Look at the example pppoe configs in /usr/share/doc/rp-pppoe/configs If you are doing LAN DHCP, then config your LAN DHCP server (router) with your ISPs name servers, then have your DHCP config your resolv.conf for you. Disabling ipv6 will prevent some browsers from trying an ipv6 name server lookup on each request. # echo alias net-pf-10 off /etc/modprobe.conf Then reboot for it to take affect. -Ross __ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Slow browsers or slow connections?
On Nov 12, 2007 9:58 PM, Mark Hull-Richter [EMAIL PROTECTED] wrote: So, I go back to my CentOS SeaMonkey and clear the cache and the history. I'm not sure what else to do, though, because that didn't solve the problem, and Firefox is as slow as my SeaMonkey. Any suggestions? Are there corollaries to IE's files for SM or Ff? Not that I expect it to help, but did you also clear the cookies? That's on a different tab in the preferences, at least in firefox. I recently experienced a problem with firefox where cnn.com refused to load -- every other site I tried was fine, but cnn.com gave me the connection failed, website may be too busy page with the Try Again button. Clearing the cache didn't help, but selectively deleting cnn.com cookies (in order of my guess at their usefulness from least toward most) eventually revived it. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
RE: [CentOS] OT: Slow browsers or slow connections?
Mark Hull-Richter wrote: I have ATT (formerly SBC) DSL for my primary internet connection here, and tonight it has been exceptionally, extraordinarily S - L - O - W Pages that normally load in, at most, seconds, are taking several minutes to locate, even common, frequent access pages like Google, Gmail, etc. I called ATT, of course, and all they know about is IE, which, as you can probably guess, I rarely use. Normally I use SeaMonkey, with Firefox as a last ditch backup, on the Linux side, and SeaMonkey in my Windows VM-guest, with IE as the absolute last ditch backup. I tried their on-the-phone-quick-fix and turned off my modem and router for the recommended 20 seconds (more like 30), and this did no good as far as I could see. (The router is for convenience when I need multiple connections - typically, as now, this is the only computer connected to it.) However, I played along with their support person (they need more support than they give out...), and their suggestion was to go into IE (groan, double groan to fire up the Windows VM guest), delete all cookies, delete all files, and clear the history. Funny thing is, that worked - for IE. So, I go back to my CentOS SeaMonkey and clear the cache and the history. I'm not sure what else to do, though, because that didn't solve the problem, and Firefox is as slow as my SeaMonkey. Any suggestions? Are there corollaries to IE's files for SM or Ff? 3 possible scenarios: 1) DNS not properly configured Make sure your resolv.conf is properly configured, if you are doing DHCP look into having your resolv.conf set through it, if you are using PPPOE you can have the ppp daemon set it too if the DNS is passed over the ppp connection. If you are using a static resolv.conf, make sure it is correct, use nslookup on each server in resolv.conf and do a couple of test lookups (www.yahoo.com www.google.com etc). 2) TCP MTU and blackhole router if PPPOE If you are doing PPPOE then make sure the MTU on the ppp interface link is set to 1492 as pppoe uses 8 bytes for ppp framing. If it is set to 1500 then some large packets will drop and the stack will have to resend smaller and smaller till it goes through. If ICMP need to frag messages are dropped then the connections will stall completely. 3) TCP scaling window and broken router The latest CentOS uses the TCP scaling window algorithm to the RFC spec which some routers don't support. Some people have noticed that this solves the problem when communicating to other hosts over the Internet. sysctl -w net.ipv4.tcp_window_scaling=0 -Ross __ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Slow browsers or slow connections?
On Tue, 13 Nov 2007 07:44:48 -0800 Bart Schaefer [EMAIL PROTECTED] wrote: selectively deleting cnn.com cookies (in order of my guess at their usefulness from least toward most) eventually revived it. Why not delete them all? cnn.com seems to work fine without being allowed to set cookies on this computer. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Slow browsers or slow connections?
--- Frank Cox [EMAIL PROTECTED] wrote: On Tue, 13 Nov 2007 07:44:48 -0800 Bart Schaefer [EMAIL PROTECTED] wrote: selectively deleting cnn.com cookies (in order of my guess at their usefulness from least toward most) eventually revived it. Why not delete them all? cnn.com seems to work fine without being allowed to set cookies on this computer. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos I think the problem is between keyboard and chair. :-D ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Slow browsers or slow connections?
On Nov 13, 2007 11:46 AM, Steven Vishoot [EMAIL PROTECTED] wrote: I think the problem is between keyboard and chair. :-D Yeah, my blasted watch is keeping too accurate time these days ;^) No, wait! I have GOT to stop handling those bits manually! ;^) Thanks for the good thoughts! mhr ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: Slow browsers or slow connections?
- Original Message - From: Mark Hull-Richter [EMAIL PROTECTED] To: CentOS mailing list centos@centos.org Sent: Tuesday, November 13, 2007 3:58:01 PM (GMT+1000) Australia/Brisbane Subject: [CentOS] OT: Slow browsers or slow connections? I have ATT (formerly SBC) DSL for my primary internet connection here, and tonight it has been exceptionally, extraordinarily S - L - O - W Pages that normally load in, at most, seconds, are taking several minutes to locate, even common, frequent access pages like Google, Gmail, etc. I called ATT, of course, and all they know about is IE, which, as you can probably guess, I rarely use. Normally I use SeaMonkey, with Firefox as a last ditch backup, on the Linux side, and SeaMonkey in my Windows VM-guest, with IE as the absolute last ditch backup. I tried their on-the-phone-quick-fix and turned off my modem and router for the recommended 20 seconds (more like 30), and this did no good as far as I could see. (The router is for convenience when I need multiple connections - typically, as now, this is the only computer connected to it.) However, I played along with their support person (they need more support than they give out...), and their suggestion was to go into IE (groan, double groan to fire up the Windows VM guest), delete all cookies, delete all files, and clear the history. Funny thing is, that worked - for IE. So, I go back to my CentOS SeaMonkey and clear the cache and the history. I'm not sure what else to do, though, because that didn't solve the problem, and Firefox is as slow as my SeaMonkey. Any suggestions? Are there corollaries to IE's files for SM or Ff? Thanks. mhr -- This message has been scanned for viruses and dangerous content by MailScanner , and is believed to be clean. First thing that comes to mind is DNS; Has your DNS servers changed and you have them hardcoded in /etc/resolv.conf or similar ? Are the seamonkey/firefox browsers going through a proxy ? -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
