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await vs Task.Wait - Deadlock?
...wers:
"async await" is more complex at CIL level and thus costs memory and CPU time.
Any task can be canceled if the waiting time is unacceptable.
In the case "async await" we do not have a handler for such a task to cancel it or monitoring it.
Using Task is more flexible then "async await".
Any syn...
windows下捕获dump之Google breakpad_client的理解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...队在chromium上做二次开发，使用的是进程内dump，没发现有问题。现在我安装的chrome浏览器，没发现有crash_server进程，估计要么是没抓dump，要么是进程内dump，我看到有文章说有一个GoogleCrashHandler.exe进程，但我这里没有发现，可能...
Difference between malloc and calloc?
... do some tricks to speed it up. I know that FreeBSD, when it gets any idle CPU time, uses that to run a simple process that just goes around and zeroes out deallocated blocks of memory, and marks blocks thus processes with a flag. So when you do calloc, it first tries to find one of such pre-zeroed ...
Practical use of `stackalloc` keyword
...if you use stackalloc you greatly increase the chance of cache hits on the CPU due to the locality of data.
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Cosmic Rays: what is the probability they will affect a program?
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More importantly, the chip feature size for CPUs in 1995 was around 0.35 µm or 350nm. It's now 1/10th that size at 35nm.
– Joe Koberg
Apr 5 '10 at 21:02
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Error handling in C code
... expensive, even if no error is ever thrown it will consume quite a bit of CPU time and stack space. When using gcc for Windows, you can choose between different exception handling methods for C++, one of them bases on setjmp and it makes your code up to 30% slower in practice.
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Generating random integer from a range
...ate tens of millions of random numbers in less than a second on a standard CPU with this technique.
EDIT:
Although the above is technically correct, DSimon's answer is probably more useful in practice. You shouldn't implement this stuff yourself. I have seen a lot of implementations of rejection s...
Why is ArrayDeque better than LinkedList
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Also, since the linked list nodes are allocated here and there, usage of CPU cache won't provide much benefit.
If it might be of interest, I have a proof that adding (appending) an element to ArrayList or ArrayDeque runs in amortized constant time; refer to this.
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unsigned int vs. size_t
...2 (byte). 16 bit arithmetic was faster than 32 bit arithmetic, though the CPU could handle a (logical) memory space of up to 4 GiB.
Use the int type only when you care about efficiency as its actual precision depends strongly on both compiler options and machine architecture. In particular the C ...
What does Redis do when it runs out of memory?
...ood enough results. 10 Approximates very closely
# true LRU but costs more CPU. 3 is faster but not very accurate.
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# maxmemory-samples 5
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