cmurphycode

8 ms·

61.
by cmurphycode 10y ago
Forgive me, but I think you've misunderstood something here. The most important thing about the cuckoo is that your bucket choice functions (i.e. hashing function) are independent. If two keys hash to the same first choice bucket, thei
62.
by cmurphycode 10y ago
Imgur album now compares brotli and zstd. Looks like zstd is always significantly faster, but Brotli compresses slightly better for every dataset except the XML one. This is with brotli level 1, by the way. My understanding is that brotli i
63.
by cmurphycode 10y ago
There's a nice comparison of compression algorithms (including zlib, zstd, brotli, snappy, etc) here: https://quixdb.github.io/squash-benchmark/ It's nice because it uses many datasets and machine platforms.
64.
by cmurphycode 10y ago
Just to clarify, I think you meant to ask why random access is still slower than sequential on ssd. Writes smaller than the ssd erase size are more expensive per byte because of write amplification. This is not nearly as big of a factor as
65.
by cmurphycode 10y ago
Nearly everyone thinks they're an above-average driver. A slightly better than average autopilot will be viewed as riskier! There's also some sort of bias against negative events that are (more) out of your control, I think.
66.
by cmurphycode 10y ago
I'm having trouble understanding what the practical difference between the transaction concept and something like RAII. It may just be the example they chose (goroutine processes an incoming request, does not "share" the cont
67.
by cmurphycode 10y ago
The main reason I bought my Galaxy S7 is because they made it thicker and with a bigger battery than the S6.
68.
by cmurphycode 10y ago
From talking to my colleague with an ecobee, that's not the point. If the ecobee detects a big swing between the two sensors, it'll run the fan, but not the heat/cool. That balances the rooms. It makes sense.
69.
by cmurphycode 10y ago
For 4K random reads, you'll probably want more than 32 iodepth, even on a consumer drive like this. And you'll want to try to write to each offset in the drive beforehand in case they have a "return 0" shortcut (like man
70.
by cmurphycode 10y ago
That is very true (and a valid concern) but it's hard to understand what the filesystem should do in this case. Seems to me that the best you can hope for is that the data is corrupted in a way that doesn't make "sense"
71.
by cmurphycode 10y ago
Having read that slide, I can only guess that they were fixing up checksums for the pages they modified in known valid , but wrong ways. In other words, if there's a page on disk containing a timestamp and the test wants to bump the
72.
by cmurphycode 10y ago
How's that? If you go read your data, re-checksum it, and that matches the original checksum, then you have confidence (to the strength of your checksum function) that the data is not corrupted.
73.
by cmurphycode 11y ago
without spending the time to make a better prime generator, you can get your test going much faster by only testing factors up till sqrt(p). With just that change to your program, and asking for 100k primes: {'9-1': 8829, '1-
74.
by cmurphycode 11y ago
Wow. Lots of interesting points, and a few things that made me say WTF and wonder how much this will be torn apart in the comments. In other words, a very worthy read.
75.
by cmurphycode 11y ago
Well, if they did understand, they would say the chance is ~1 in 2^61, not 1 in 2^122, and they would've based the math comparison to RAM failure on 2^61, which changes the comparison entirely. In any case, I should have been more cle
76.
by cmurphycode 11y ago
Yeah, I really don't understand how they are ignoring this. It's actually very concerning to me that they don't understand this.
77.
by cmurphycode 11y ago
seltzer water (i like Polar) is this. It's an enormous market in the US.
78.
by cmurphycode 11y ago
This is a great point and a huge mental problem I have when looking at (and writing) benchmarks. If anyone knows more about this (i.e. if they can show why it isn't true) please speak up.
79.
by cmurphycode 12y ago
" Most of those players are not famous. Most never made a dime off the game. They are relatively anonymous men who played the sport in college and only later, for some reason or another, have found themselves struggling in life."
80.
by cmurphycode 12y ago
Actually, you can use convergent encryption to dedup encrypted files. It leaks information (because I can tell whether a file that I possess already exists on the server if the server is silly enough to tell me that it took no space/ti
81.
by cmurphycode 13y ago
Have you ever had your legs measured by a physical therapist or equivalent? I used to do the same thing. The problem is that resting on one leg tends to push the hips out of alignment (it's easy to see in the mirror; the hipbones won&#
82.
by cmurphycode 13y ago
Yep, the math makes no sense if you assume the two options are 0 or 1B. I guessed that he was using the actual outcomes of the entire spread- considering that he references the 67% chance of $0 shortly thereafter, it is clear he doesn'
83.
by cmurphycode 13y ago
"expected" payoff is the key, here. He's not just dividing a billion by 3.
84.
by cmurphycode 13y ago
Your theory of salting-per-user is correct. Rainbow tables are useful if the time it takes to compute is big enough that storing a large list is useful. The GPU crackers are so fast nowadays that that isn't the case. If you can try 500
85.
by cmurphycode 13y ago
Here's your answer: "The XL1 has a coefficient of drag of 0.189" from the article. That's an enormous improvement on all other production cars. Which is why it uses " 8.3 horsepower to maintain [60 mph]— one-third that of a Jetta" Of course
86.
by cmurphycode 13y ago
Software Engineers in Boston area (Waltham, MA) Actifio ( http://www.actifio.com ) is looking for software engineers. Actifio is radically simple copy data management. We've invented some really cool technology to do things no other system
87.
by cmurphycode 13y ago
I've been getting pretty sick of the whole "look how dumb I am, but I'm iterating!!!11" meme, but I really like this post. As a young person working in a company of people with far more experience, I've asked my share of stupid-simple que
88.
by cmurphycode 14y ago
I set up gitlab for some "skunkworks" projects at my day job, and it's been really great. The Gitolite dep never bothered me (the gitlab install is well documented), but seems like a good thing. Thanks for your hard work, guys and gals!
89.
by cmurphycode 14y ago
Lucky :) Even if I don't use my phone at all, it'll be below 80% by this time, and Maps & co seem to be a major culprit, since Now keeps on chugging even when the phone hasn't woken in a long time. Interestingly, GSam battery monitor (w
90.
by cmurphycode 14y ago
Actually, Now's time goes under Maps- at least the location services, which are the big draw. I have all of the tracking enabled, and maps uses between 20 and 30% of my overall.

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