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Is execution time of same program for multiple time give different result?
What you are doing is wrong. Your line of questioning indicates you do not understand how processors and clock cycles work, even at a rudimentary level. There is no way to measure processor speed by timing how long it takes to execute a java program.

Categories : Java

Php gives an execution time exception with time limit set to 0
create a .htaccess file and insert the below code //<IfModule mod_php5.c> //php_value post_max_size 5M //php_value upload_max_filesize 5M //php_value memory_limit 300M //php_value max_execution_time 259200 //php_value max_input_time 259200 //</IfModule> I have added additional php values.. you can ignore that...please remove // before using the code Hope this will solve your problem Thanks

Categories : PHP

ArrayList shows different time of execution each time why?
Most likely the reason you are not getting accurate times is because currentTimeMillis() is not precise enough to measure it. Do a loop of 10000 of them and time that and see what you get. Adding to an ArrayList likely takes microseconds, not milliseconds (in the usual case). That 15ms you are seeing might be a lag due to garbage collection or something - but whatever it is, you are sampling too small to get accurate results.

Categories : Java

How do I see a Unix Job's performance (execution time and cpu resource) after execution?
You can use linux profile tool perf, eg: perf stat ls In my computer: Performance counter stats for 'ls': 2.066571 task-clock # 0.804 CPUs utilized 1 context-switches # 0.000 M/sec 0 CPU-migrations # 0.000 M/sec 267 page-faults # 0.129 M/sec 2,434,744 cycles # 1.178 GHz [57.78%] 1,384,929 stalled-cycles-frontend # 56.88% frontend cycles idle [52.01%] 1,035,939 stalled-cycles-backend # 42.55% backend cycles idle [98.96%] 1,894,339 instructions # 0.78 insns per cycle # 0.73 s

Categories : Performance

Convert time into datetime which returns today's date and time from database
Try something like this: DECLARE @currDate DATETIME; @StrDate VARCHAR(30), @StrTime VARCHAR(30) SET @currDate = GETDATE(); SET @StrDate = CONVERT(VARCHAR, @currDate , 101); SET @StrTime = CONVERT(VARCHAR, a.StartTime,108) SET @StrDate = (@StrDate + ‘ ‘ + @StrTime); RETURN CONVERT(DATETIME,@StrDate,121);

Categories : SQL

getting time difference from current time using sql database in php
Timestamps in MySQL generally used to track changes to records, and are often updated every time the record is changed. If you want to store a specific value you should use a datetime field. If you meant that you want to decide between using a UNIX timestamp or a native MySQL datetime field, go with the native format. You can do calculations within MySQL that way ("SELECT DATE_ADD(my_datetime, INTERVAL 1 DAY)") and it is simple to change the format of the value to a UNIX timestamp ("SELECT UNIX_TIMESTAMP(my_datetime)") when you query the record if you want to operate on it with PHP. An important difference is that DATETIME represents a date (as found in a calendar) and a time (as can be observed on a wall clock), while TIMESTAMP represents a well defined point in time. This could be very i

Categories : PHP

Translating time stamps (start, end) into time series data. Errors with align.time() and colnames
This is not an answer to your problem. Honestly it is not clear for me the transition between the data you show in the image and the example of your data. It seems like that you can't reproduce this data. So Here a function to generate a reproducible example of your data. I think it can be at least useful, to validate your model. function to sample data library(reshape2) start.min <- as.POSIXct("2013-01-01 00:00:00 PST") hours.min <- format(seq(start.min, length.out=24*60, by = "mins"), '%H:%M') ## function to generate a trip sample ## min.dur : minimal duration of a trip ## max.dur : maximal duration of a trip ## min.trip : minimal number of trips that a user can do gen.Trip <- function(min.dur=3,max.dur=10,min.trip=100){ ## gen

Categories : R

identify the row in my time vector where the time is 5 seconds before the last printed time, times are however in milliseconds
For your sample vector (let's call it t): find(t < t(end) - 5000, 1, 'last') ans = 4 For the full matrix, it's almost the same thing: find(matrix(:,2) < matrix(end,2) - 5000, 1, 'last')

Categories : Matlab

WPF Binding in execution time
It's not entirely clear what you're trying to achieve. If you're trying to set binding on your object at runtime in the code behind, you should be able to do this: For a given Rectangle <Rectangle Name="MyRect"/> In your code: // Property to bind (example).... public SolidColorBrush MyColor { get; set; } // // In some initialisation method. MyColor = new SolidColorBrush(Colors.Blue); Binding myBinding = new Binding("MyColor"); MyRect.SetBinding(Rectangle.FillProperty, myBinding); In your specific case, you would want to set myBinding.ElementName, and point myBinding.Path at a property on the element you wish to target. I may have misunderstood your goal. MSDN

Categories : C#

Scripts execution time
You can do the calculation in a function and register that function for execution on shutdown with register_shutdown_function. $time_start = microtime(true); register_shutdown_function(function() use ($time_start) { $time_end= microtime(true); $dif = $time_end-$time_start; echo "Script ran for $dif seconds "; }); // do a lot of work and die() suddenly and somewhere

Categories : PHP

Java - Time of execution
First of all. Java compiler perform optimization of constant expression, so your code on compile time will be converted to: int b = 120; As result JVM performs assign to a=20 and b=120 near the same time. The second. You perform short measurement of big system (I mean entire computer that includes OS, swap processes, another run processes ...). SO you get snapshot of random system at very small time-period. That is why you cannot deduce true or false that a assignment is faster than b. To proof this you have to place code measurement into rather big loop - do the same approximately 1,000,000 times. Such big repeating allows you smooth the expectation (in mathematical sense of this word)

Categories : Java

Checking whether current date time is greater than or equal to date and time from the database
//i think it should be like this: if (dbDate < CurrentDate) { $("#updateTrainingButton").hide(); $("#sendInvitationButton").hide(); $("#cancelTrainingButton").hide(); }else if(dbDate == CurrentDate){ if ((end_Time[0].end_time) < Current_Time) { $("#updateTrainingButton").hide(); $("#sendInvitationButton").hide(); $("#cancelTrainingButton").hide(); } }

Categories : Javascript

How to compare Starting time and End time of a event with existing events of same time on same day?
You can use 24 hour format to solve this in your logic. you have to save existing event timings in Database. whenever new event timings entered, you need to compare with existing both start & end timings with previous ones. For Example: Event1: x1 to y1 Event2; x2 to y2 if(x2==x1 && y2==y1) if(x2>x1 &&x2<y1) andif(y2<y1) ...so on based on your requirement.

Categories : Asp Net

Calculating execution time of an algorithm
You cannot get a reliable result from one execution alone; Java (well, JVMs) does runtime optimizations, plus there are other processes competing for CPU time/resource access. Also, are you sure your algorithm runs in constant time whatever the inputs? Your best bet to have a calculation as reliable as possible is to use a library dedicated to performance measurements; one of them is caliper. Set up a benchmark with different inputs/outputs etc and run it.

Categories : Java

query execution time reduction
If this is a critical query, you can create an index designed just for it: CREATE INDEX ix_MyIndexNameHere ON CompanyBackup (tiRecordStatus, iAccesscode, chUpdateBy) This will still require a key lookup since you are returning all fields with *, but it's a lot better than a bunch of single-field indexes.

Categories : SQL

Programme execution time counter
std::chrono::high_resolution_clock is as portable a solution as you can get, however it may not actually be higher resolution than what you already saw. Pretty much any function which returns system time is going to jump forward whenever the system time is updated by the timer interrupt handler, and 10ms is a typical interval for that on modern OSes. For better precision timing, you need to access either a CPU cycle counter or high precision event timer (HPET). Compiler library vendors ought to use these for high_resolution_clock, but not all do. So you may need OS-specific APIs. (Note: specifically Visual C++ high_resolution_clock uses the low resolution system clock. But there are likely others.) On Win32, for example, the QueryPerformanceFrequency() and QueryPerformanceCounter()

Categories : C++

PHP execution time measurement precision
Your platform, Windows, can not discriminate between such small times, with the standard time calls. A comment from the PHP source code: "on windows, time_sleep_until has millisecond accuracy while microtime() is accurate to 10th of a second." (In ext/standard/tests/misc/time_sleep_until_basic.phpt.)

Categories : PHP

javascript check time of execution
If you want to execute a long running operation in javascript and you are getting anywhere close to the script execution time limit enforced by some browsers, then you will have to break your function into multiple pieces, run one piece, to a very short setTimeout(fn, 1) and then execute the next piece, etc... Doing it this way, you can run code for hours because it gives other scripts and other events a chance to process. It sometimes requires a minor amount of code restructuring to be able to do this, but it's always possible with a little work. The basic concept in pseudo-code would be this: var state = {}; // set initial state var done = false; function doWork() { // do one increment of work that will never get even close to the browser // execution time limit // update t

Categories : Javascript

Execution time and gettimeofday on ubuntu / i7
You can use gettimeofday() at start and end of code to find the difference between starting time and finishing time of program. like //start = gettimeofday //your code here //end = gettimeofday Execution time will be difference between the 2 But it depends on how much load is one the machine is at that point. So not a reliable method. You can also use: time ./a.out assuming your program is a.out

Categories : C

How to reduce Mysql execution Time?
You are using regex_replace and like "%foobar%", that actually slows down your query significat, since mySql has to do a fulltext search and the regex operation on every single row. Maybe it's faster if you do these operations after you fetched your results, using php instead of mysql.

Categories : PHP

How to set a execution limit time to a thread?
You're thinking about this all wrong. If you ever feel like you need to kill a thread, that means that thread is doing something you don't want it to do. That means that thread is broken and should be fixed. You don't want to "reach in" to a thread from the outside and make it do what you want it to do. You want to code that thread from the inside so it does what, and only what, you actually want done. Threads cooperate to accomplish a job. A thread should never be coded to do work that is not desired to be done. In most cases, you can just leave the thread alone. Just stop waiting for it or try something else too. Perhaps you might set some flag or give the thread some indication that it's work is no longer needed and have the thread check for that indication from time to time so it can

Categories : Java

get execution time of a single operation
I believe you would need to profile the whole map-reduce cluster while running your pig script and it can be quite challenging. Have a look into this post: https://cwiki.apache.org/confluence/display/PIG/HowToProfile and this: https://www.inkling.com/read/hadoop-definitive-guide-tom-white-3rd/chapter-5/tuning-a-job

Categories : Apache

getchar_unlocked() slowing down execution time
If that's your actual code, then c-getchar_unlocked(); will cause an infinite loop since c is never modified. I suspect you want c = getchar_unlocked(); Using the space bar won't make your code run slower and makes the code more readable.

Categories : C++

How can we find the execution time of a method in .NET 1.1?
Jeff Atwood, of CodingHorror fame, provided a good implementation of a Stopwatch class for .NET 1.1, it's worth looking at: http://www.codinghorror.com/blog/2005/12/a-stopwatch-class-for-net-11.html If your method is long-running and you only need something accurate to the nearest 10-millisecond or so, then you could get-away with using DateTime.UtcNow.Subtract( startTime ).TotalMiliseconds but don't depend on it for accurate reporting.

Categories : Vb.Net

How to use the execution time method with try and catch
Put this code in a finally block : long endTime = System.currentTimeMillis(); long totalTime = ((endTime - startTime)/1000); System.out.println("the execution time is:"); System.out.println(totalTime);

Categories : Java

Measure Java Execution Time
look at https://github.com/codahale/metrics Metrics is a Java library which gives you unparalleled insight into what your code does in production. Metrics provides a powerful toolkit of ways to measure the behavior of critical components in your production environment. With modules for common libraries like Jetty, Logback, Log4j, Apache HttpClient, Ehcache, JDBI, Jersey and reporting backends like Ganglia and Graphite, Metrics provides you with full-stack visibility. http://metrics.codahale.com/

Categories : Java

Postgres Query execution time
Use iming as explained by my first hit for "psql query execution time". See also the manual for psql. If you want server-side execution times that don't include the time to transfer the result to the client, you can set log_min_duration_statement = 0 in the configuration, then SET client_min_messages = log so you get the log info in the console. You can also use EXPLAIN ANALYZE to get detailed execution timings. There's some timing overhead for this unless you use EXPLAIN (ANALYZE TRUE, TIMING FALSE), which is only in newer versions, and disables detailed timing to give only an aggregate execution time instead. PgBadger, especially when combined with the auto_explain module, can provide useful aggregate statistics from log analysis. Finally, there's pg_stat_statements, which can coll

Categories : Postgresql

Why execution time of one sub-thread is more than that of the whole application
Your threads are not measuring their runtime; they are measuring the difference (roughly) between their start time and their end time. During that time, they are not constantly running; as there are multiple threads (and multiple processes on your machine), they are sharing processor time, so some of the time in the interval between start and finish is spent idle. Imagine the following: two people go into work at 9 AM. They take turns performing some task - driving a forklift, for example - and continue to switch off, alternating between doing the task and taking breaks, until 5 PM, at which point they clock out. Together, they have logged 16 hours of work, but the forklift was operating for only 8, and the workday (here, your program's run time) was only 8 hours long. Your program is

Categories : C++

What's the better way to get the Node.js app total time execution?
You could do the time start/end timing method. At the beginning of your main script you grab the time. var start = Date.now(); process.on("exit", function() { var end = Date.now(); console.log("Time taken: %ds", (end - start)/1000); }); // all you code... // more code...

Categories : Javascript

Jquery minimal execution time
.show and .hide are not animated unless you pass an optional argument as suggested by christian in comments. To use a fading effect you could use .fadeIn and .fadeOut. Which accepts an optional argument for speed (and accepts some constants like slow, fast).

Categories : Jquery

Measuring execution time in the D language
One way is to use -profile command line parameter. After you run the program, it will create file trace.log where you can find run time for each function. This of course will slow down your program as the compiler will insert time counting code into each your function. This method is used to find relative speed of functions, to identify which you should optimize to improve app speed with minimum effort. Second options is to use std.datetime.StopWatch class. See the example in the link. Or even better suited might be to directly use std.datetime.benchmark function. Don't forget: When benchmarking use these dmd compiler flags to achieve maximum optimization -release -O -inline -noboundscheck. Never benchmark debug builds. Make sure you don't call any library code inside benchmarked fu

Categories : Performance

Error in execution time with MinGw
Just making pLinhas as static makes it to work fine. I suppose the problem was reference to nonexistent pointers after the end of function scope. So, this code was tested and works! void FilaInit() { int i = 0; static char elementos[8][128]; static char * pLinhas[8]; for (i = 0; i < 8; i++) pLinhas[i] = &elementos[i][0]; Fila_Init(&TELIT_dadosRecebidos, 8, 128, pLinhas); } A detail is that pLinhas is an array of pointers to char, an array of pointers to strings. Its size is 8*4 bytes. Other point is that I must to use constant integer to declare pLinhas. I would like to emphasize this solution...I have searched a lot this kind of structured data. It's very interesting in cases where you cannot use malloc, like embedded applications, but need to c

Categories : C

Configure MS SQL Server to log query and its execution time
AFAIK SQLConnector is for MySQL, so I don't understand how you can work with SQLServer 2012. If you need profiling in SQLServer - there is nothing better than SQL Server Profiler. I can't configure it correctly to capture any query execution time It must be easy: Event Selecion - you need SQL:Stmt Completed (uncheck everything else). You need to select duration. Column Filters - create filter by Login Name (make special login if you need it), TextData, Spid (if you can figure out how to obtain it)

Categories : SQL

JDBC - SQL statements execution time logging
Measuring time and logging it seems like a job for AOP. If you are using EJB, a simple interceptor should solve your problem(for example http://www.javacodegeeks.com/2013/07/java-ee-ejb-interceptors-tutorial-and-example.html). If its Spring(judging from JDBCTemplate), try Aspectj.

Categories : Java

REGEXP_SUBSTR Is taking more time for execution in Oracle
Try this, WHERE email IN ( select regexp_substr('one@gmail.com,two@gamil.com,three@gmail.com,four@gmail.com','[^,]+', 1, level) from dual connect by regexp_substr('one@gmail.com,two@gamil.com,three@gmail.com,four@gmail.com', '[^,]+', 1, level) is not null );

Categories : Regex

Time bounded execution : Loops or Recursion?
There is a lot of threads about this subject already. Is recursion ever faster than looping? or Why is recursion in python so slow? are yielded in the first google search page...

Categories : Python

json_decode for specific execution time depth
If you don't want to use json_decode, you could try and extract the "not to be decoded" field with a regexp, then json_decode the modified variable, and finally reassign the extracted item into the resulting array. The regexp /"reportFields"s*:s*(.*)}s*}s*$/ms ought to match the item and return the lower-level array element. Replace the whole match with "reportFields": "" } } and you get a JSON entity that can be decoded and re-enriched. Alternatively, you can extract "aras", 2 and 5 as independent strings with the same preg_match and not run preg_replace or json_decode at all. Technically using regexps is DEAD WRONG because a JSON dictionary could contain the items in any order, while the regexp I supplied only recognizes the fields in a specific order - there should be around twelve p

Categories : PHP

How to stop jQuery function execution after one time
Why are you registering a event handler to document, that is the problem because once the handler is registered any whenever any key pressed in the document the function gets called the registered handler in this case ck_jq gets called. editor.on("key", function(event) { //alert(event.data.keyCode); if (event.data.keyCode===13) { ck_jq() } });

Categories : Jquery

My code is taking too long at time of execution
first of all i didn't understand if the query to the DB is taking too long or the rest of the function or both. if you don't know, you should start by testing it. you can use a simple DateTime.Now and see how many ticks did each part took. if you want to test it with an even better way, you can use StopWatch as as V4Vendetta said. you can find an example here and basically the syntext will be like: // Create new stopwatch Stopwatch stopwatch = new Stopwatch(); // Begin timing stopwatch.Start(); // YOUR CODE HERE // Stop timing stopwatch.Stop(); // Write result Console.WriteLine("Time elapsed: {0}", stopwatch.Elapsed); for the DB access is the one that take too long i can advise you not to call too many sql queries. i see that in a for loop you are calling: "select slno from

Categories : C#

Processor Instruction Cycle Execution Time
ALL instructions require more than one clock cycle to execute. Fetch, decode, execute. If you are running on an stm32 you are likely taking several clocks per fetch just due to the slowness of the prom, if running from ram who knows if it is 168Mhz or slower. the arm busses generally take a number of clock cycles to do anything. Nobody talks about instruction cycles anymore because they are not deterministic. The answer is always "it depends". It may take X hours to build a single car, but if you start building a car then 30 seconds later start building another and every 30 seconds start another then after X hours you will have a new car every 30 seconds. Does that mean it takes 30 seconds to make a car? Of course not. But it does mean that once up and running you can average a n

Categories : Misc



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