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How to read a large file - line by line?
...htop to see that with plain old sequential pandas dataframe.read_csv, 100% cpu on just one core is the actual bottleneck in pd.read_csv, not the disk at all.
I should add I'm using an SSD on fast video card bus, not a spinning HD on SATA6 bus, plus 16 CPU cores.
Also, another technique that I disc...
Why doesn't C++ have a garbage collector?
... responsiveness or server loading?
should it use lots of memory or lots of CPU?
C/c++ is used in just too many different circumstances.
I suspect something like boost smart pointers will be enough for most users
Edit - Automatic garbage collectors aren't so much a problem of performance (you can a...
How to detect the OS from a Bash script?
...
Detecting operating system and CPU type is not so easy to do portably. I have a sh script of about 100 lines that works across a very wide variety of Unix platforms: any system I have used since 1988.
The key elements are
uname -p is processor type but...
Using GZIP compression with Spring Boot/MVC/JavaConfig with RESTful
...t/html,text/xml,text/plain,application/javascript,text/css
# not worth the CPU cycles at some point, probably
server.compression.min-response-size=10240
In application.properties 1.2.2 - <1.3
server.tomcat.compression=on
server.tomcat.compressableMimeTypes=application/json,application/xml,tex...
How to measure elapsed time in Python?
...robably enough in most cases. On Unix, you can use time.clock() to measure CPU time.
– KGS
Jul 6 '17 at 10:00
1
...
Is there an auto increment in sqlite?
...old & italic are mine):
The AUTOINCREMENT keyword imposes extra CPU, memory, disk space, and
disk I/O overhead and should be avoided if not strictly needed. It is
usually not needed.
In SQLite, a column with type INTEGER PRIMARY KEY is an alias for the
ROWID (except in WITHOUT ROW...
Wait 5 seconds before executing next line
...
So basically you are wasting CPU time. That's not a wait as you are not putting the thread into sleep mode allowing the main processor to focus in other tasks.
– Kyordhel
Jul 6 '17 at 20:25
...
Compile Views in ASP.NET MVC
...it (I find it fine on a large-ish project with 4GB ram and a hyperthreaded CPU) but I easily make back the time I spend waiting for it, and I end up doing fewer operations on my code as R# provides higher level operations that batch together the many steps I'd have to take to achieve the same task m...
StatusbarTools 扩展 - 状态栏自定义工具 · App Inventor 2 中文网
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Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
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再次创建RAID
自动 当发生问题的时候有冗余
不管怎么设置 3块硬盘只能设置成RAID 1 还有一块不能用 ，太TM的坑爹了
查看阵列卡的配置 我X 缓存0M 你奶奶的配置什么3块硬盘啊，你这么搞IB...