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CruiseControl [.Net] vs TeamCity for continuous integration?
...a certain number of projects you'll find that CC.Net is taking most of the CPU for your build machine.
Of course, it's open source, so you can fix it... And, I'm sure it's fine for small numbers of non-interdependent projects.
For more details of the problems I had and some patches for CC.Net see ...
If threads share the same PID, how can they be identified?
...apart from the tgid), a multi-threaded process will in conclusion get more CPU time than a single-threaded one, provided that both have the same priority and none of the threads is halted for any reason (such as waiting for a mutex).
– Aconcagua
Sep 21 '15 at 1...
凤姐当天使 徐小平胡海泉薛蛮子王刚怎么看？ - 资讯 - 清泛网 - 专注C/C++...
...们投资偏硬技术比较多一点，一般现在的天使碰不到这些问题，你要投硬技术的时候，其实是特别痛苦的一件事，比如说现在天使投资都说人不好，我们就不投了，投硬技术，往往真理就在这个人的手里，他能掌握这个核心技术...
What is an SDL renderer?
...ther important difference is that SDL_Surface uses software rendering (via CPU) while SDL_Texture uses hardware rendering (via GPU).
SDL_Rect
The simplest struct in SDL. It contains only four shorts. x, y which holds the position and w, h which holds width and height.
It's important to note th...
How to determine the encoding of text?
... bom is present
# write endianess generally determined by endianess of CPU
if ((b[0:2] == b'\xfe\xff') or (b[0:2] == b'\xff\xfe')):
return "utf16"
if ((b[0:5] == b'\xfe\xff\x00\x00')
or (b[0:5] == b'\x00\x00\xff\xfe')):
return "utf32"
# If BOM is not ...
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 ...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...内存到CentralCache里。 解决了ptmalloc2中arena之间不能迁移的问题。
Tcmalloc占用更少的额外空间。例如，分配N个8字节对象可能要使用大约8N * 1.01字节的空间。即，多用百分之一的空间。Ptmalloc2使用最少8字节描述一个chunk。
更快。...
What's the difference between Task.Start/Wait and Async/Await?
...e another thread is doing the work, and that thread has been assigned to a CPU, so the work is actually being done. Maybe the work is being done by hardware and there is no thread at all. But surely, you say, there must be some thread in the hardware. No. Hardware exists below the level of thread...
Grepping a huge file (80GB) any way to speed it up?
...
If you have a multicore CPU, I would really recommend GNU parallel. To grep a big file in parallel use:
< eightygigsfile.sql parallel --pipe grep -i -C 5 'db_pd.Clients'
Depending on your disks and CPUs it may be faster to read larger blocks:
...
What are bitwise operators?
...ut bit on the bottom line. So the answer to the above expression is 4. The CPU has done (in this example) 8 separate "AND" operations in parallel, one for each column.
I mention this because I still remember having this "AHA!" moment when I learned about this many years ago.
...