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Why are C character literals ints instead of chars?
...A' from this main memory into a register, which one would you read?
Some CPUs may only directly support reading a 16 bit value into a 16 bit register, which would mean a read at 20 or 22 would then require the bits from 'X' be cleared out, and depending on the endianness of the CPU one or other wo...
Spark java.lang.OutOfMemoryError: Java heap space
...uch mem you're using)
Try using more partitions, you should have 2 - 4 per CPU. IME increasing the number of partitions is often the easiest way to make a program more stable (and often faster). For huge amounts of data you may need way more than 4 per CPU, I've had to use 8000 partitions in some c...
Concurrent.futures vs Multiprocessing in Python 3
...ay eventually frustrate you in ways the richer interfaces won't.
So far as CPU-bound tasks go, that's way too under-specified to say much meaningful. For CPU-bound tasks under CPython, you need multiple processes rather than multiple threads to have any chance of getting a speedup. But how much (i...
Is there any difference between GROUP BY and DISTINCT
...---------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
---------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 58 | 174 | 44 (19)| 00:00:01 |
| 1 | HASH GROUP BY | | 58 | 174 | 4...
What resources are shared between threads?
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about point no 2 above : For threads also CPU maintains a context.
– Jack
May 2 '13 at 6:14
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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...
Is MD5 still good enough to uniquely identify files?
...ower that the probability of the comparison failing due to glitches in the CPU generated by normal solar gamma ray emissions. And don't forget that often the only source of the file is sitting on the other side of the world inside a web server, and the only independent piece of information you have ...
Async/Await vs Threads
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Worth mentioning await Task.Run for cpu-bound work. If I understand correctly, that sometimes accomplishes what one would otherwise create a thread, or a background worker, to do.
– ToolmakerSteve
Jun 27 '18 at 5:26
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How to mount a host directory in a Docker container
...t interfaces -a, --attach=[]: Attach to stdin, stdout or stderr. -c, --cpu-shares=0: CPU shares (relative weight)
– Kishore Vaishnav
May 4 '14 at 16:40
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If Python is interpreted, what are .pyc files?
...instructions, just not native machine instructions for the host's physical CPU. Hence why we call it a VM ? Like Esperanto for assembly language really. Nowadays we even have native code for fictional (but still emulated) CPU's (Mojang's effort to get the kiddies interested). Rexx was (or could be) ...