Process (process) thread (thread)
folk understanding
Processes focus on managing the allocation and scheduling of memory resources, and threads focus on using the CPU to run code
Threading is equivalent to the number of pipelines in a factory, and the process is the product being produced on a certain pipeline.
Process is the basic unit of allocating resources, and threads are the basic units of execution.。In a purely metaphorical way, if you look at the computer as a whole as a national budget, the process is all kinds of special budgets (education, defense, etc.), and the thread is a more...
mongodb The winodws version is installed.
Question: when Robo 3T clicks, the wrong mongodb shell was not initiallized is reported.
Solution: Open the Task Manager — check the status of the mongodb Service — if it’s stopped, it’s running — and resolve
px：IEPX cannot be adjusted as unit font size.
It’s a pixel, a relative length unit, relative to the screen resolution of the display.
em：The font size of the text relative to the current object. 1em=16px;
rem:When the font size is large, although it is still relative size, it has relative HTML root elements.
cmd /c “C:\zabbix\bin\win64\zabbix_agentd.exe -c c:\zabbix\conf\zabbix_agentd.win.conf -i”cmd /c “C:\zabbix\bin\win64\zabbix_agentd.exe -c c:\zabbix\conf\zabbix_agentd.win.conf -s”
cmd /c “C:\zabbix\bin\win64\zabbix_agentd.exe -c c:\zabbix\conf\zabbix_agentd.win.conf -x”cmd /c “C:\zabbix\bin\win64\zabbix_agentd.exe -c c:\zabbix\conf\zabbix_agentd.win.conf -d”
-c ：Specify all locations of configuration files-i ：Install client-s ：Boot client-x ：Stop client-d ：Uninstall client
Text linkAn error occurred when installing the software and encountered the problem of damage to the package management system. Find solutions on askubuntu.First:sudo apt-get -f install
There is no download to complete the file.Then: sudo apt-get updateThen:Repeat execution
sudo apt-get -f install
Until only the wrong package is left.Then:sudo dpkg —configure -aFinally, clear the cache.sudo apt-get clean
> = On the left, run to see = right.
3，Static functions.
Compile time: refer to whether there are invocation members in the class of the referenced variable.
Runtime: it also refers to the members who are invoked in the class that the reference variable belongs to.
Why is this so?Because static methods do not belong to the object, but belong to the class that the method belongs to.
Invoking the static method reference is the static method in which class the reference is invoked.
p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px "Hannotate SC"; color: #0433ff }
p.p2 { margin: 0.0px 0.0px 0.0px 0.0px; font: 17.0px "Hannotate SC" }
p.p3 { margin: 0.0px 0.0px 0.0px 0.0px; font: 17.0px "Hannotate SC"; min-height: 24.0px }
span.s1 { }
span.s2 { font: 18.0px "Hannotate SC"; color: #0433ff }
span.Apple-tab-span { white-space: pre }
Reference blog:
findCommand xargs
findThe difference between – exec and xargs in the command is that the find command passes all matched files together to exec for execution, but passes all matched files in batches to xargs for execution....
Guide: Overflow attributes are generally used to hide elements beyond the div range, including four attributes: visible, hidden, scroll, and aotu. Of course, the usage of overflow.It’s not that simple to understand. We need to use overflow in many Web pages. This article introduces the four common attribute values of overflow and their use.
According to the box model of CSS, every element in the page is a rectangular box. The size, location and behavior of these boxes can be controlled by CSS. For behavior, I mean when it changes inside and outside the box, how does it deal with it?
For...
