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闲扯Nginx的accept_mutex配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...相关的解释：
OS may wake all processes waiting on accept() and select(), this is called thundering herd problem. This is a problem if you have a lot of workers as in Apache (hundreds and more), but this insensible if you have just several workers as nginx usually has. Therefore turning acc...
Are there console commands to look at whats in the queue and to clear the queue in Sidekiq?
...ou could do all of this even more easily via redis-cli :
$ redis-cli
> select 0 # (or whichever namespace Sidekiq is using)
> keys * # (just to get an idea of what you're working with)
> smembers queues
> lrange queues:app_queue 0 -1
> lrem queues:app_queue -1 "payload"
...
How to use the “required” attribute with a “radio” input field
...buttons they must all have the same name value. This allows only one to be selected at a time and applies required to the whole group.
<form>
Select Gender:<br>
<label>
<input type="radio" name="gender" value="male" required>
Male
</label><b...
Dynamically changing font size of UILabel
...stsFontSizeToFitWidth = true;
2 - Using UILabel Attributes inspector
i- Select your label- Set number of lines 1.
ii- Autoshrink- Select Minimum Font Scale from drop down
iii- Set Minimum Font Scale value as you wish , I have set 0.7 as in below image. (default is 0.5)
...
EditText underline below text property
...above, you can get images from a lot of components in the Holo theme. Just select "EditText" and the color you want. You can see a preview at the bottom of the page.
Download the .zip file, and copy paste the resources in your project (images and the XML).
if your XML is named: apptheme_edit_text_...
Scheduling R Script
...g go to
**TOOLS -> ADDINS ->BROWSE ADDINS ->taskscheduleR -> Select it and execute it.**
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How do I delete rows in a data frame?
... :
mydata[-seq(2, nrow(mydata), by = 2) , ]
Or if you want to subset by selecting odd numbers:
mydata[which(1:nrow(mydata) %% 2 == 1) , ]
Or if you want to subset by selecting odd numbers, version 2:
mydata[which(1:nrow(mydata) %% 2 != 0) , ]
Or if you want to subset by filtering even numbe...
How can I extract embedded fonts from a PDF as valid font files?
...or FontForge:
Use the "Open Font" dialogbox used when opening files.
Then select "Extract from PDF" in the filter section of dialog.
Select the PDF file with the font to be extracted.
A "Pick a font" dialogbox opens -- select here which font to open.
Check the FontForge manual. You may need to fol...
How to set java_home on Windows 7?
... installation path:
Right-click the My Computer icon on your desktop and select Properties.
Click the Advanced tab, then click the Environment Variables button.
Under System Variables, click New.
Enter the variable name as JAVA_HOME.
Enter the variable value as the installation path for the Java ...
Maven2: Missing artifact but jars are in place
...s of turning it off and on again.
Try right-clicking on the project and selecting Maven->Update Project Configuration.
Disable then re-enable dependency management (right-click Maven->Disable Dependency Management then Maven->Enable Dependency Management
Close the project and reopen it.
...