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Getting “Lock wait timeout exceeded; try restarting transaction” even though I'm not using a transac
...ysql> set innodb_lock_wait_timeout=100
Query OK, 0 rows affected (0.02 sec)
mysql> show variables like 'innodb_lock_wait_timeout';
+--------------------------+-------+
| Variable_name | Value |
+--------------------------+-------+
| innodb_lock_wait_timeout | 100 |
+------------...
MySQL: Insert record if not exists in table
...listnames WHERE name = 'Rupert'
) LIMIT 1;
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
SELECT * FROM `table_listnames`;
+----+--------+-----------+------+
| id | name | address | tele |
+----+--------+-----------+------+
| 1 | Rupert | Somewhere | 022 |
+----+...
How can I check if a Perl array contains a particular value?
...ng 100000 iterations of any, first, grep, hash...
any: 0 wallclock secs ( 0.67 usr + 0.00 sys = 0.67 CPU) @ 149253.73/s (n=100000)
first: 1 wallclock secs ( 0.63 usr + 0.01 sys = 0.64 CPU) @ 156250.00/s (n=100000)
grep: 42 wallclock secs (41.95 usr + 0.08 sys = 42.03 CPU) @ ...
Dictionary vs Object - which is more efficient and why?
... on my machine - object with slots is the most efficient approach (I got ~7sec).
– tkokoszka
Aug 26 '09 at 19:43
6
...
How do I check CPU and Memory Usage in Java?
...om a large server application:
[GC 325407K->83000K(776768K), 0.2300771 secs]
[GC 325816K->83372K(776768K), 0.2454258 secs]
[Full GC 267628K->83769K(776768K), 1.8479984 secs]
Here we see two minor collections and one major one. The numbers
before and after the arrow
325407K->830...
How to profile a bash shell script slow startup?
My bash shell takes up to 3-4 seconds to start up, while if I start it with --norc it runs immediately.
7 Answers
...
nginx upload client_max_body_size issue
...
Solution works for me on openshift php7 nginx.
– marlo
Sep 28 '16 at 3:56
add a comment
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C++ Tuple vs Struct
...les | Iterations | Baseline | us/Iteration | Iterations/sec |
-----------------------------------------------------------------------------------------------------------------------------------------------
Sort | struct | Null | 10 | ...
Disable validation of HTML5 form elements
...
@user1569050 For example in frameworks like CakePHP, it will use the novalidate="novalidate" method when you set the novalidate => true in the $options array of the FormHelper::create(). Thanks bassim for the extra info :)
– Jelmer
...
How do I make the first letter of a string uppercase in JavaScript?
...pe is by far the slowest in terms of performance.
// 10,889,187 operations/sec
function capitalizeFirstLetter(string) {
return string[0].toUpperCase() + string.slice(1);
}
// 10,875,535 operations/sec
function capitalizeFirstLetter(string) {
return string.charAt(0).toUpperCase() + string.sl...