So, then, Slashdot. That gets you something like 50,000 hits in ten hours, and contrary to naive expectations, some of the visitors wrote interesting comments. This also confirmed something I've long believed, which is that the `Slashdot effect' is something which mainly affects people who've misconfigured their webservers:
-- from the theory, the hit rate should rise instantly from its background value to its maximum value at the time the link was made. In fact it rose in two jumps, because we'd forgotten to remove the compile-time limit on the number of processes with which apache can serve clients. Oops. Once that was fixed, the problem went away.... (Five hits per second isn't very much, of course -- sustained, it's about four hundred thousand visits/day -- but that plot doesn't include the requests for all the graphs in the two discussion pieces to which Slashdot linked; including those pushes the rate up to about 35 hits/second.)
Slashdot didn't link to the quiz itself from the front page, which is slightly disappointing given that the linked discussion articles give away many of the answers. That said, judging by the Slashdot comments, I don't think this will have had much effect on the results....
One other oddity: numerous people complained that, in relation to the question about the first year in which a woman flew in space, the term astronaut is specific to American spacefarers and that the first woman in space, Valentina Tereshkova, was a cosmonaut. This is a perfectly legitimate point; such framing problems will affect the answers given.
The question doesn't even mention the term `astronaut'. It reads,
Please estimate... the year in which a woman first flew in space.
On a slightly different topic, here are the quotations and aphorisms which the Slashdot hordes liked most and least from Am I Sig or Not?, based on the change in score from before they arrived to after:
The best that can be said for this, I think, is that the downward-moving ones don't confirm our prejudices about Slashdot readers as much as do the upward-moving ones.

Comments
Posted by Chris Pawley, Saturday, 11 September 2004 11:10 (link):
Lol! Unfortuante timing for Niel Humphreys of `Snowdon Computers'; to be the focus of a tirade and lead story on your blog only for it to get Slashdotted. (Albeit a different page). - It's almost suspicious :P
--
Chris
Posted by Chris Lightfoot, Saturday, 11 September 2004 11:22 (link):
Pure coincidence, I'm afraid. I guess Slashdot picked it up from Crooked Timber? In any case, it's another instance of Slashdot getting to what's new, two weeks late.
Posted by Tom, Sunday, 12 September 2004 16:20 (link):
I'm sure they were just objecting to the grammar in the Belloc. It should be "they have not", surely. The Internet is also unsure about whether it's "eye" or "eyes" that he cast around (presumably foreshadowing Culkin's similar ploy involving marbles in "Home Alone" (1990)) and about whether the incident took place at "that fateful ground" or "a little mound". I'm sure your newfound Slashdot readership will rapidly identify the correct versions, since there can be little doubt that they have the necessary Complete Bellocs.
Posted by Danny Yee, Monday, 13 September 2004 07:32 (link):
Damn, it's been years since I was last Slashdotted - I don't review enough computer books, and when I do review one someone else has usually got a review in already. And book reviews don't count as full Slashdottings, since they run on the site itself.
Posted by Edmund von der Burg, Saturday, 18 September 2004 17:16 (link):
I don't mean to imply that you don't know what is going on with your own server, but could the two peaks not be due to Slashdot letting it's subscribers see the page 20 to 30 minutes before the unwashed hordes? Would the first peak not plateau if it was constrained, rather than start to drop off?
Posted by Pete Stevens, Saturday, 18 September 2004 20:42 (link):
Good explanation, but no. Apache was stubbornly refusing to release more than 256 processes despite setting the maximum higher, with the recompile and letting it go the number of processes suddenly shot up to ~2k [and the load rose to around 50 or so for a while]. If you read the slashdot comments people were complaining about the server not being available for the first thirty minutes or so.
Not the best advert initially for our hosting services, but we're now confident we've got a server that can happily survive a slashdotting unless the pages are especially dynamic.
Pete
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