For your Cisco 837 DSL config, try some of the following: interface Dialer0 ip mtu 1492 If you are using a bridging interface for the 4 ports on the back into a VLAN, also try the following interface BVI1 ip tcp adjust-mss 1452 Whilst I have ADSL2+ here, I get nowhere near 2+ speeds thanks to copper pair distance due to its path from exchange & quality: sh dsl interface | i Speed Speed (kbps): 0 3634 0 819 Using speedtest.net via Chrome/W7 through Squid 3.1.1 on CentOS 5.4 x86_64 running on a VM (can provide source RPM if needed): Download: 1.96Mb/s Upload: 0.54Mb/s Via Chrome/W7 without Squid: Download: 3.12Mb/s Upload: 0.68Mb/s >From another Linux system: export http_proxy=http://x.x.x.x:3128 wget wget http://cache-203.39.198.135.files.bigpond.com/software/network/browsers/Fire foxPortable_3.6.3_English.paf.exe --11:36:40-- http://cache-203.39.198.135.files.bigpond.com/software/network/browsers/Fire foxPortable_3.6.3_English.paf.exe => `FirefoxPortable_3.6.3_English.paf.exe' Connecting to 192.168.0.5:3128... connected. Proxy request sent, awaiting response... 200 OK Length: 9,616,696 (9.2M) [application/octet-stream] 100%[======================================================================= ============>] 9,616,696 375.53K/s ETA 00:00 11:37:07 (362.46 KB/s) - `FirefoxPortable_3.6.3_English.paf.exe' saved [9616696/9616696] Squid Log: 1271986638.443 26802 X.X.X.X TCP_MISS/200 9617229 GET http://cache-203.39.198.135.files.bigpond.com/software/network/browsers/Fire foxPortable_3.6.3_English.paf.exe - DIRECT/203.39.198.135 application/octet-stream Not bad given my connection .... quite poor performance for what it costs me per month but that?s another story. Also check Cisco's site for ADSL firmware updates for your router to improve DSLAM compatibility as well - it may help. Hope all of the above helps. Alex -----Original Message----- From: francis aubut [mailto:fugitif.fa@xxxxxxxxx] Sent: Thursday, 22 April 2010 8:38 AM To: squid-users@xxxxxxxxxxxxxxx Subject: Fwd: Slow tranfert speed over ADSL internet connection ---------- Forwarded message ---------- From: francis aubut <faubut@xxxxxxxxxxx> Date: 2010/4/21 Subject: Re: Slow tranfert speed over ADSL internet connection To: Amos Jeffries <squid3@xxxxxxxxxxxxx> Cc : squid-users@xxxxxxxxxxxxxxx What I can add is when IE is not connected to the proxy, it goes at 2,5 mbps and I connect to the proxy it goes down to 500 kbps. At home the speed is the same 10 mbps on both tests. I'll check for the DNS, could the cisco 837 router limit speed somehow? Tanks, Francis. 2010/4/20 Amos Jeffries <squid3@xxxxxxxxxxxxx>: > On Tue, 20 Apr 2010 11:49:05 -0400, francis aubut <fugitif.fa@xxxxxxxxx> > wrote: >> Hi,I configured Squid, first with Ubuntu server and then on CentOS 5 >> the problem is the same, I get very slow speed on a network connected >> with a ADSL internet connection and when I bring the computer at home >> it goes well, I have a Cable Modem connection, what could be wrong? >> >> Francis. > > Your experiments as described pretty conclusively confirm that the > problems is: > a) difference in network lag (its conceivable that your ADSL is simply > slower than Cable, I know mine is by a whole order of magnitude or two). > > b) site-specific configuration somewhere in your setup. Resulting in the > box going a long way to get stuff, ie a DNS server from the cable > connection being used when on ADSL etc. > > Amos >
