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How to show the last queries executed on MySQL?
...n server though, it's a performance killer.
Edit your MySQL config, e.g. /etc/mysql/my.cnf - look for, or add, a line like this
[mysqld]
log = /var/log/mysql/mysql.log
Restart mysql to pick up that change, now you can
tail -f /var/log/mysql/mysql.log
Hey presto, you can watch the queries as ...
Why is my program slow when looping over exactly 8192 elements?
...in.
Now we can see the problem is the same in this question: Why does the order of the loops affect performance when iterating over a 2D array?
You are iterating the matrix column-wise instead of row-wise.
To solve this problem, you should interchange the two loops.
for(j=1;j<SIZE-1;j++) {
...
Android: When should I use a Handler() and when should I use a Thread?
...nning or very intensive (i.e. anything network, file IO, heavy arithmatic, etc).
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Mismatched anonymous define() module
...s with anonymous modules is to overwrite the requirejs.onError function in order to prevent the default error exception thrown by requirejs which stops succesive modules or code to be executed.
– xtrm
May 22 '17 at 16:42
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Stopping scripters from slamming your website
...of the same page, following every link on a page quickly, or filling in an order form too fast to be human.
If they fail the check x times in a row (say, 2 or 3), give that IP a timeout or other such measure. Then at the end of the timeout, dump them back to the check again.
Since you have unreg...
How connect Postgres to localhost server using pgAdmin on Ubuntu?
...ostgres user password is not blank, but undefined (an exclamation mark in /etc/shadow). No password login possible.
– Str.
Jul 23 '14 at 21:16
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What does the term “porcelain” mean in Git?
...interface to Porcelain commands on the other hand are subject to change in order to improve the end user experience.
See "How do I programmatically determine if there are uncommitted changes?" as an example to using plumbing commands instead of porcelain ones.
Note: A porcelain command can have...
Change the color of a bullet in a html list?
... you want this feature, do these:
Blink (Chrome, Opera, Vivaldi, Yandex, etc.): star Chromium's issue
Gecko (Firefox, Iceweasel, etc.): Click "(vote)" on this bug
Trident (IE, Windows web views): Click "I can too" under "X User(s) can reproduce this bug"Trident development has ceased
EdgeHTML (MS ...
How to get screen width without (minus) scrollbar?
...eliable API available. Some javascript developers may be building plug-ins etc and may not have control of the entire page.
– Naman Goel
Apr 14 '15 at 15:54
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Set a persistent environment variable from cmd.exe
...oring an environment variable at user level.
In cmd, SETX TEST_VARIABLE etc. Not applied yet (echo %TEST_VARIABLE% shows %TEST_VARIABLE%,
Quick check: open cmd, echo %TEST_VARIABLE% shows etc.
GUI check: System Properties -> Advanced -> Environment variables -> User variables for -> ...