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Why are primes important in cryptography?
... @stujo: same principles will rule when all of us use Quantum CPUs, as primes can keep growing, its all about finding larger, impractical for quantum CPUs, the problem exists if some use regular CPUS to create keys, and some use Quantum CPUs to break those. The power of quantum CPUs, as...
Best way to check if object exists in Entity Framework?
...housands of database calls were being made to check for duplicates (so the CPU sent a lot of time at 100%). In the end I decided to keep the last 100,000 records cached in memory. This way I could check for duplicates against the cached records which was extremely fast when compared to a LINQ quer...
Timeout a command in bash without unnecessary delay
...choose a polling interval. And if you set the polling too low, it will eat CPU with constant signaling, making the tlrbsf run even longer!
– system PAUSE
Mar 27 '09 at 0:28
8
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Long list of if statements in Java
... boilerplate, but it won't get any shorter..)
3) you will save any wasted cpu cycles by going through a long list of if's or calculating hashCodes and doing lookups.
edit:
if you don't have enums but strings as source, just use Command.valueOf(mystr).exec() to call the exec method.
note that you ...
Powershell equivalent of bash ampersand (&) for forking/running background processes
...e pwsh &
Receive-Job $job
Output
NPM(K) PM(M) WS(M) CPU(s) Id SI ProcessName
------ ----- ----- ------ -- -- -----------
0 0.00 221.16 25.90 6988 988 pwsh
0 0.00 140.12 29.87 14845 845 pwsh
0 0.00 85.5...
In Docker, what's the difference between a container and an image? [duplicate]
...clude network options (IP, port, etc.), name, ID, and any resource limits (CPU, memory). If the Docker engine has been asked to run the container it will also initialise a process inside it. A container can be stopped and restarted, in which case it will retain all settings and filesystem changes (b...
Why is Swift compile time so slow?
...thing to note is that, by default, it builds 2 files concurrently per each CPU core, and will not give you the "net" elapsed time, but the absolute "user" time. This way all the timings even out between parallelized files and look very similar.
To overcome this, set the -jobs flag to 1, so that it ...
Are loops really faster in reverse?
...'t be able to optimize as good. Generally, it's limited by architecture or cpu registers that JIT uses. Initializing once and going down simply cleanest solution and that's why it's recommended all over the place.
– Pavel P
Oct 30 '12 at 18:28
...
`testl` eax against eax?
...and sometimes faster (can macro-fuse into a compare-and-branch uop on more CPUs in more cases than CMP). That makes test the preferred idiom for comparing a register against zero. It's a peephole optimization for cmp reg,0 that you can use regardless of the semantic meaning.
The only common reaso...
How do I prevent a Gateway Timeout with FastCGI on Nginx
... use unicorn.
Look at top on your server. Unicorn likely is using 100% of CPU right now.
There are several reasons of this problem.
You should check your HTTP requests, some of their can be very hard.
Check unicorn's version. May be you've updated it recently, and something was broken.
...