[jacques_chester]

Based on the stats on the site, I calculate that Wordpress.com is averaging about 10 writes and around 8800 reads per second.

edit: Correction, ~880 reads per second.

[ck2]

Looking at the posts per day detail I think it's more like 30 per second with bursts that probably go to twice that, while nighttime is idle depending on timezones.

But I agree it's a fraction of 7k/sec peak for twitter.

However, twitter does not have to parse html, has no plugins to execute or templates, and has a max string length of 140 characters which is trivial.

Each post/comment published on wp.com takes many, many more cpu cycles than twitter.

[jacques_chester]

I agree that Wordpress requires far more CPU time (I run a network of Wordpress blogs).

My figures: 900,000 transactions (500,000 posts + 400,000 comments) / 86,400 seconds per day:

~= 10 transactions per second on average, though like twitter, activity probably has a power law distribution corresponding with US daylight hours.

Reads: 2.3 billion / month Suppose a 30-day month, that's 86,400*30 or 2,592,000 seconds per month.

2,300,000,000 / 2,592,000 ~= 887 pageviews per second.

I was incorrect by an order of magnitude, though the same uneven traffic patterns caveat applies.