cperciva

24 ms·

391.
by cperciva 2y ago
The best summary I can provide is "profiling and lots of small wins".
392.
by cperciva 2y ago
I gave a talk at BSDCan 2022 about this ("speeding up the FreeBSD boot") -- I'm on my phone right now so I can't provide a link but it's on YouTube. There's also a somewhat out of date summary of most of the wo
393.
by cperciva 2y ago
I did that comparison a few years ago: https://www.daemonology.net/blog/2021-08-12-EC2-boot-time-be... Re-running the comparison with Linux AMIs from 2024 is on my to-do list.
394.
by cperciva 2y ago
Fixing instance types was probably wrong. Depends what you're trying to measure, I think? My goal as a FreeBSD developer is to look at FreeBSD performance -- this is both to show the improvements which have been made over the years
395.
by cperciva 2y ago
me @FreeBSD.org. I figured most people reading this would know who I am.
396.
by cperciva 2y ago
The different X axes are because I figured there's no point having a bunch of graphs which are 90% empty. For a long time we only had base/UFS images. (Even arm64 came a few years later than amd64.)
397.
by cperciva 2y ago
Seconds, yes. Sorry I figured that was obvious, I'll add it to the graphs I generate next week.
398.
FreeBSD/EC2 boot performance over time(daemonology.net)
109 points by cperciva 2y ago|35 comments
399.
by cperciva 2y ago
I mean... tools, not policy, right? Tarsnap is whatever you want to make of it. :-)
400.
by cperciva 2y ago
The regulations concern any manual, semi-automatic, or fully automatic equipment which may be used for the compaction or molding of powdered or granular solids, or semi-solid material, to produce coherent solid tablets. If the device in q
401.
by cperciva 2y ago
[inheritance] serves no purpose in a society based on improving the lives of the entire population I would say that society is served well by the ability of widows to inherit and not be left destitute. Similarly for minor children. If yo
402.
by cperciva 2y ago
I'm not a lawyer, but I can't imagine any judge ruling that it is illegal. A sword which has been beaten into a plowshare is no longer a sword, and an inoperative 140 year old pill press is no longer a pill press.
403.
by cperciva 2y ago
Only if there is a "deemed disposition". Which in most cases happens when the owner dies. You probably don't need to worry about this happening multiple times.
404.
by cperciva 2y ago
Leaving aside the fact that Sam Walton was an American and so his assets had no "deemed disposition" upon his death: Walmart is a publicly traded company, so if his heirs inherited a few % less of the company it wouldn't make
405.
by cperciva 2y ago
This is something people love to rage about, yet it's not one with an obvious fix. In Canada, assets are deemed to have been disposed of upon death (or gifting) so the estate pays capital gains taxes on the accrued profit. There are
406.
by cperciva 2y ago
Counterexample: Perfectly level floor, one table leg is 10 cm shorter than the rest. No way to make it stable.
407.
by cperciva 2y ago
Note: This is really the wobbly floor theorem. It applies to any continuous floor but only to a subset of tables. (Even "square tables which are perfectly level" isn't sufficient unless you allow the tabletop to intersect
408.
by cperciva 2y ago
The Tarsnap website has the man pages for tarsnap utilities, for easy googling; they're generated basically by `man | sed`. I would be very annoyed if the Tarsnap website was broken because someone decided to throw in an Easter egg and
409.
by cperciva 2y ago
Positively charged particles end up at the top of the storm while negatively charged particles drop to the bottom, creating an enormous electric field that can be as strong as 100 million AA batteries stacked end-to-end. Or put another wa
410.
by cperciva 2y ago
This is fundamentally an example of the "drunk searching for his keys under the street light" problem: He's getting a wildly inappropriate form of recognition because that's the form of recognition Microsoft has a syste
411.
by cperciva 2y ago
If your concern is to have secure tunnels between hosts, you should probably use spiped rather than SSH, since it uses a separate TCP connection for each pipe -- this avoids the "connection dropped" problem and also the "mult
412.
by cperciva 2y ago
I believe work is underway on HEAD but I don't think we'll see any of it in 13. Probably not even in 14. That sort of stuff is hard to merge without breaking KBIs.
413.
by cperciva 2y ago
It's not recommended, but you can run freebsd-update and pkg upgrade non-interactively.
414.
by cperciva 2y ago
Not recommended. We have backwards compatibility but not necessarily forwards compatibility within a stable branch; running a 13.4 userland on a 13.3 kernel could break horribly. (My guess is that it's probably fine, simply becaus
415.
by cperciva 2y ago
Most people have or should have already moved to 14. Some people can't, for example if they have binary kernel modules; we provide stable kernel interfaces within a major version but not between versions. From my perspective though, t
416.
FreeBSD 13.4-Release Now Available(lists.freebsd.org)
9 points by cperciva 2y ago|0 comments
417.
by cperciva 2y ago
Maybe I missed something, but what does this cost?
418.
by cperciva 2y ago
Exactly. Whereas on BSD hitting ^T is (a) very likely to print useful information, and (b) if it doesn't do that, won't do anything at all.
419.
by cperciva 2y ago
Rarely enough that needing to open another terminal and use kill to send a signal doesn't bother me.
420.
by cperciva 2y ago
Oops, brainfart. Sadly it's too late for me to edit that comment. Yes, you can select just fine on pipes. What I was thinking of is that recv and send doesn't work on pipes, and asynchronous I/O frameworks typically wan

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