I'd warn HN users not to click on that link simply because it will load a 26Mb message that will likely cause quite a strain on kernel.org's servers if everyone here does it.
I was curious how much of an impact HN could have. Napkin math:
HN gets 24M views a day. Assume those views are evenly distributed across the front page (they aren’t), and that’s about 1M views for each front page post, assuming each user clicks on one post.
By the rule of 10s (also not exact), there are 10x less views on comment threads. So assume around 100k views on a comment thread as a theoretical average.
If everyone in this thread clicked on the link, that would be 2.6 TB of transfer across the day. But by the rule of 10’s we have to assume 10x fewer people will interact (upvote, click, anything) than view. So we’re down to 260GB transfer over the course of a day.
I wonder how close that is. It seems plausible that a link in the top comment of a thread could garner 10,000 clicks.
That’s still about one click every 8 seconds, which at 10Mbit/s would indeed overwhelm the server by a factor of about 2.5x. But I clicked through and it loaded in just a few seconds, so presumably the pipe is faster than 10Mbit/s.
Another caveat is that many websites are already several megabytes, so it seems strange that 26Mb would be the breaking point for a reasonable web host.
> There's no stats page but last I checked it was around 5M monthly unique users (depending on how you count them), perhaps 10M page views a day (including a guess at API traffic), and something like 1300 submissions (stories) and 13k comments a day.
> The most interesting number is the 1300 submissions because that hasn't grown since 2011 - it just fluctuates. Everything else has been growing more or less linearly for a long time, which is how we like it.
Does a 26MB message actually cause noticeable strain on the server much beyond loading the page? I would think serving a contiguous 26MB chunk would be relatively similar to say 20 normal sized messages.
Way off. I went to an arbitrary message on lore.kernel.org. Firefox's network inspector says 7.37kB was transferred, including stylesheets. 26MB is roughly 3500x 7.37kB.
IA's infra is slightly better for big loads though, they tend to just have higher latency rather than aborted/timed out requests, for better or worse. It can be bit slow, but as long as you're ready to wait, you'll eventually get the response. Usually hosts just cut you off with a hardcoded timeout instead, which for people on high latency/low bandwidth connections can be super fun.
HN gets 24M views a day. Assume those views are evenly distributed across the front page (they aren’t), and that’s about 1M views for each front page post, assuming each user clicks on one post.
By the rule of 10s (also not exact), there are 10x less views on comment threads. So assume around 100k views on a comment thread as a theoretical average.
If everyone in this thread clicked on the link, that would be 2.6 TB of transfer across the day. But by the rule of 10’s we have to assume 10x fewer people will interact (upvote, click, anything) than view. So we’re down to 260GB transfer over the course of a day.
I wonder how close that is. It seems plausible that a link in the top comment of a thread could garner 10,000 clicks.
That’s still about one click every 8 seconds, which at 10Mbit/s would indeed overwhelm the server by a factor of about 2.5x. But I clicked through and it loaded in just a few seconds, so presumably the pipe is faster than 10Mbit/s.
Another caveat is that many websites are already several megabytes, so it seems strange that 26Mb would be the breaking point for a reasonable web host.