Redis on the Raspberry Pi: Adventures in unaligned lands
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Re: Redis on the Raspberry Pi: Adventures in unaligned lands
#2There is a funny mode on ARM processors (turned on in some images, by default) which causes unaligned reads to silently return bogus data (just increasing a kernel counter).
PowerPC, and really, most non-x86 architectures, do this one way or another.
Re: Redis on the Raspberry Pi: Adventures in unaligned lands
#3OT: Is blattimwind shadow banned?
Re: Redis on the Raspberry Pi: Adventures in unaligned lands
#4OT: Is blattimwind shadow banned?
? I see his post
Re: Redis on the Raspberry Pi: Adventures in unaligned lands
#5OT: Is blattimwind shadow banned?
No, but posting while green will usually get your comment downvoted to oblivion, even if you are erudite and contribute to the conversation.
Turn on "show dead comments" and see how many greens are deleted. I screenshot many examples.
Re: Redis on the Raspberry Pi: Adventures in unaligned lands
#6OT: Is blattimwind shadow banned?
No, but posting while green will usually get your comment downvoted to oblivion, even if you are erudite and contribute to the conversation. Turn on "show dead comments" and see how many greens are deleted. I screenshot many examples.
I doubt it's downvotes. Probably cases of the spam/ringvoting detector gone wrong.
Re: Redis on the Raspberry Pi: Adventures in unaligned lands
#7Re: Redis on the Raspberry Pi: Adventures in unaligned lands
#8OT: Is blattimwind shadow banned?
No, but posting while green will usually get your comment downvoted to oblivion, even if you are erudite and contribute to the conversation. Turn on "show dead comments" and see how many greens are deleted. I screenshot many examples.
Is this cause (ie. people downvote greens out of prejudice) or effect (greens are often created to shitpost?
And to concentrate all my meta in one place... Is shadow banning a thing at HN? I thought they just, well, banned you.
Re: Redis on the Raspberry Pi: Adventures in unaligned lands
#9Earlier quoted context omitted.
No, but posting while green will usually get your comment downvoted to oblivion, even if you are erudite and contribute to the conversation. Turn on "show dead comments" and see how many greens are deleted. I screenshot many examples.
Is this cause (ie. people downvote greens out of prejudice) or effect (greens are often created to shitpost? And to concentrate all my meta in one place... Is shadow banning a thing at HN? I thought they just, well, banned you.
They added shadowbanning some time ago and later added a user (the rest of us) ability to vouch for dead posts to revive them. There were reasons at the time they did this that the admins could probably explain better.
Re: Redis on the Raspberry Pi: Adventures in unaligned lands
#10I fondly remember unaligned access faults "back in the day" with FreeBSD/alpha. We implemented a fixup for applications, but not for the kernel. I seem to recall that even though x86 could deal with unaligned accesses, it caused minor performance problems, so fixing alignment issues on alpha would benefit x86 as well.
Most (definitely not all) of the mis-alignment problems were in the network stack, and were centered around the fact that ethernet headers are 14 bytes, while nearly all other protocols had headers that were a multiple of at least 4 bytes.
I've said it before, and I'll say it again: If I had a time machine, I would not kill Hitler. I'd go back to the 70s and make the ethernet header be 16 bytes long, rather than 14.