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Error java.lang.OutOfMemoryError: GC overhead limit exceeded
...age collector is taking an excessive amount of time (by default 98% of all CPU time of the process) and recovers very little memory in each run (by default 2% of the heap).
This effectively means that your program stops doing any progress and is busy running only the garbage collection at all time....
Which is faster : if (bool) or if(int)?
...s this also apply to 64-bit processes, that __int64 is faster than int? Or CPU deals 32-bit integer with 32-bit instruction sets separately?
– Crend King
Apr 27 '11 at 21:22
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Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...性能上更为出色，至于孰优孰劣是个仁者见仁智者见智的问题，鉴于多数Linux发行版均选择了Rsyslog，姑且让我随波逐流一次。
如果说Rsyslog有哪些缺点的话，那么兼容性无疑是很显眼的一个，不同版本之间的差异比较大，使用时...
How do I return multiple values from a function? [closed]
... a new one), creating the namedtuple class is relatively expensive in both CPU and memory, and all class definitions intrinsically involve cyclic references (so on CPython, you're waiting for a cyclic GC run for them to be released). It also makes it impossible to pickle the class (and therefore, im...
Why does string::compare return an int?
... modern hardware) an integer of the same size as the system bus and/or the cpu registers, what is called the machine word. Therefore int is usually passed along faster than smaller types, because it doesn't require alignment, masking and other operations.
The smaller types exist mainly to allow RAM...
.net localhost website consistently making get arterySignalR/poll?transport=longPolling&connectionTo
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It makes 20K requests in less than 30 seconds and uses cpu heavily. The feature might be useful but it causes too much trouble even on an intel i7 cpu
– dvdmn
Dec 10 '14 at 20:55
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Queue.Queue vs. collections.deque
... try/except, you will end up with a busy loop eating up enormous amount of CPU just waiting for new data. This seems like a horribly inefficient approach compared to the blocking calls offered by Queue, which ensure that the thread waiting for data will go to sleep and not waste CPU time.
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How to print the ld(linker) search path
...asic library search path, with names like sse2 corresponding to additional CPU capabilities.
These paths, with hwcap in the line, can contain additional libraries tailored for these CPU capabilities.
One final note: using -p instead of -v above searches the ld.so cache instead.
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App Inventor 2 试验组件 · App Inventor 2 中文网
...t 的输出）。
方法
对话(question)
向聊天机器人询问问题，连续的对话将记住先前对话中的信息，使用 重置对话 方法重置开始新的对话。
重置对话()
重置当前对话，聊天机器人在回复时会忘记之前的任何对话。
Fireb...
Python 3.x rounding behavior
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I saw that. And my first reaction: Who is using a 16-bit CPU that is incapable of representing all permutations of "2.67x" ? Saying that fractions can't be expressed in float seems like a scapegoat here: no modern CPU is that inaccurate, in ANY langauge (except Python?)
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