microseconds

When does Apache Log % d contain?   I. symptom: In the Apache + mod_jk + JBoss environment, the JBoss processing time is always very different from the processing time in Apache log. The JBoss time is the time from request entry to request end

I once remember Laruence mentioned that it was not recommended to use the "magic method". after that, I would subconsciously think about how to use the magic method. Is this a good photo? Since I have been busy with work and learning for the past

Once remember that bird brother Laruence not recommended the use of "magic Method", since then once involved in the use of magic method, I will subconsciously think about it, so good photo? Since this one to two years has been busy working and

Once remember that bird brother Laruence not recommended the use of "magic Method", since then once involved in the use of magic methods, bloggers will subconsciously think about it, so the photo is good? Since this one to two years has been busy

Once remember that bird brother Laruence not recommended the use of "magic Method", since then once involved in the use of magic method, I will subconsciously think about it, so good photo? Since this one to two years has been busy working and

The scenario for generating a unique ID is very common, such as temporary cache file names, temporary variables, temporary security codes, and so on, and the uniqid () function generates a unique ID based on the current time in microseconds. Because

Time series of DS18B20 New users must make many mistakes in the reading and writing process of DS18B20. This article briefly describes how to use it. 1. Process 1 and 2 are the initialization process. Initialization is required for each read.

We all know that when you need more than 2 columns in a table to determine the uniqueness of a record, you need to use the federated primary key, and when the Federated primary Key is established, the performance will be greatly improved when

When writing application-level programs, sometimes you need to delay, what should I do?In the kernel code, we often see such a header file using # include , and thought of calling this directly is OK! But at the time of compiling, we found thatThe

Objective Python provides several built-in modules for manipulating date times, like Calendar,time,datetime. The interface provided by the time module is basically consistent with the C standard library time.h. The interface of the DateTime module

Reproduced in: http://blog.chinaunix.net/uid-25909722-id-2827364.html architecture and related functions representing "Time" in Linux 2011-09-13 17:01:13Category: C/In the Linux system, there are many structures representing the concept of "time",

The Usleep () function delays code execution for several microseconds. The unpack () function unpack the data from a binary string. The Uniqid () function generates a unique ID based on the current time in microseconds. The Time_sleep_until ()

PreparationI didn't buy the original board. I purchased the compatible board from the authorized supplier. The compatible board has some changes.In order to connect the computer with the source board and the compatible board, you not only need to

One of the most important considerations when writing a SELECT statement against a large table is the valid tive use of an index. however this is sometimes more easily said than done. have you ever found that your WHERE clause is missing just one

Php sorted 0.1 billion QQ numbers and posted them. Split into thousands of parts for sorting and merging. First, create a txt file with 0.1 billion QQ numbers. $ V) {$ arr = range ($ v * 10000 + 10000,100 00 * ($ v + 1) + 9999); shuffle ($

This article describes the Java use of ArrayList traversal and efficiency comparisons. Share to everyone for your reference. Specifically as follows: ArrayList ARRL = new ArrayList (); ArrayList arrLTmp1 = new ArrayList (); ArrayList arrLTmp2

Original: DBA tool--dmv--View stored procedure execution information through Sys.dm_exec_procedure_statsFor DBAs, there is often some information about the phone's stored procedure: How many times did you execute How does the execution

--View the statements of tables in the database select S2.dbid, db_name (s2.dbid) as [database name],--s1.sql_handle, (select TOP 1 SUBSTRING (S2.text, STATEMENT_START_OFFSET/2 + 1, (case when Statement_end

The Usleep () function delays code execution for several microseconds. The unpack () function unpack the data from a binary string. The Uniqid () function generates a unique ID based on the current time in microseconds. The Time_sleep_until ()

Picosecond, Symbol PS (English: picosecond).1 pi seconds equals one-zero seconds (10-12 seconds)1,000 picosecond = 1 nanoseconds ns1,000,000 picosecond = 1 microseconds μs1,000,000,000 picosecond = 1 msec μs1,000,000,000,000 picosecond = 1 seconds