home
> blog
>> 695
| [previous] / [up] | [overview] | [down] / [next] |
Sun May 08 10:37:00 2011 GMT: Web crawler hall of shame: sitebot.org
Fri Apr 29 19:09:15 2011 GMT: Ubuntu 11.04
Tue Apr 19 21:40:08 2011 GMT: Mahler's Symphony No. 6 @ Royal Festival Hall
I have just been to the Royal Festival Hall for Mahler's Symphony No. 6.
Sun Apr 10 09:03:59 2011 GMT: Fidelio @ Royal Opera House
Been to a performance of Fidelio at the Royal Opera House.
Sat Apr 02 22:57:00 2011 GMT: Aida @ Royal Opera House
I have just been to a performance of Aida at the Royal Opera House - really nice production with very powerful music.
Thu Mar 31 20:56:25 2011 GMT: People Still Don't Understand TCP
Just got a cheap TP-LINK MR-3220 and noticed that some web sites just hang. My first thought was that it must have something to do with the MTU, so I did some tests with various MTUs and looking at the tcpdump.
Some web sites appear not to bother with Path MTU Discovery (i.e. blocking ICMP somewhere along the line), but just set the TCP MSS to some (lower) value like 1380. The MR-3220 router firmware has a MTU setting in the web interface which it uses for the MTU setting, but this value is also used for MSS clamping - now the problem is that MSS Clamping really means clamping, i.e. the TCP MSS value is set to the MTU value, even if that means increasing the value (a TCP MSS value of 1380 might be overwritten with 1420) which can then result in the connection hanging (because Path MTU Discovery is broken).
Wed Mar 30 06:57:11 2011 GMT: Madrid and Toledo Photos
Photos from my recent trip to Madrid are now available: here, here, here, here and here.
Sun Mar 27 19:44:21 2011 GMT: C++ Standards Committee Meeting in Madrid
Thu Mar 10 21:12:26 2011 GMT: Parallel Pixie Dust
Thu Mar 03 22:13:46 2011 GMT: From the New World @ Royal Festival Hall
Sun Feb 27 22:07:22 2011 GMT: Parsifal @ English National Opera
Fri Feb 25 22:46:03 2011 GMT: Mahler's Ninth Symphony @ Royal Festival Hall
