Benchmark | time used to execute Swift code | Performance Testing library

 by   WorldDownTown Swift Version: Current License: MIT

kandi X-RAY | Benchmark Summary

kandi X-RAY | Benchmark Summary

Benchmark is a Swift library typically used in Testing, Performance Testing applications. Benchmark has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

The Benchmark module provides methods to measure and report the time used to execute Swift code.
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            kandi-support Support

              Benchmark has a low active ecosystem.
              It has 86 star(s) with 5 fork(s). There are 4 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 0 open issues and 1 have been closed. On average issues are closed in 13 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of Benchmark is current.

            kandi-Quality Quality

              Benchmark has no bugs reported.

            kandi-Security Security

              Benchmark has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              Benchmark is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              Benchmark releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            Benchmark Key Features

            No Key Features are available at this moment for Benchmark.

            Benchmark Examples and Code Snippets

            Benchmark function .
            pythondot img1Lines of Code : 82dot img1License : Permissive (MIT License)
            copy iconCopy
            def benchmark() -> None:
                """
                Benchmark code for comparing 3 functions,
                with 3 different length int values.
                """
                print("\nFor small_num = ", small_num, ":")
                print(
                    "> sum_of_digits()",
                    "\t\tans =",
                      
            Runs benchmark .
            pythondot img2Lines of Code : 82dot img2License : Permissive (MIT License)
            copy iconCopy
            def benchmark() -> None:
                """
                Benchmark code for comparing 3 functions,
                with 3 different length int values.
                """
                print("\nFor small_num = ", small_num, ":")
                print(
                    "> num_digits()",
                    "\t\tans =",
                    num  
            Benchmark a series .
            pythondot img3Lines of Code : 75dot img3License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            def _benchmark_series(self, label, series, benchmark_id):
                """Runs benchmark the given series."""
            
                # Decides a proper number of iterations according to the inputs.
                def compute_num_iters(map_num_calls, inter_op, element_size, batch_size):
               

            Community Discussions

            QUESTION

            Rust futures / async - await strange behavior
            Asked 2021-Jun-15 at 20:06

            I am new to rust and I was reading up on using futures and async / await in rust, and built a simple tcp server using it. I then decided to write a quick benchmark, by sending requests to the server at a constant rate, but I am having some strange issues.

            The below code should send a request every 0.001 seconds, and it does, except the program reports strange run times. This is the output:

            ...

            ANSWER

            Answered 2021-Jun-15 at 20:06

            You are not measuring the elapsed time correctly:

            1. total_send_time measures the duration of the spawn() call, but as the actual task is executed asynchronously, start_in.elapsed() does not give you any information about how much time the task actually takes.

            2. The ran in time, as measured by start.elapsed() is also not useful at all. As you are using blocking sleep operation, you are just measuring how much time your app has spent in the std::thread::sleep()

            3. Last but not least, your time_to_sleep calculation is completely incorrect, because of the issue mentioned in point 1.

            Source https://stackoverflow.com/questions/67990757

            QUESTION

            How to improve divide-and-conquer runtimes?
            Asked 2021-Jun-15 at 17:36

            When a divide-and-conquer recursive function doesn't yield runtimes low enough, which other improvements could be done?

            Let's say, for example, this power function taken from here:

            ...

            ANSWER

            Answered 2021-Jun-15 at 17:36

            The primary optimization you should use here is common subexpression elimination. Consider your first piece of code:

            Source https://stackoverflow.com/questions/67987701

            QUESTION

            spec_tbl_df is over 10 times slower on same opperations as a normal tibble
            Asked 2021-Jun-15 at 14:37

            So I was really ripping my hair out why two different sessions of R with the same data were producing wildly different times to complete the same task. After a lot of restarting R, cleaning out all my variables, and really running a clean R, I found the issue: the new data structure provided by vroom and readr is, for some reason, super sluggish on my script. Of course the easiest thing to solve this is to convert your data into a tibble as soon as you load it in. Or is there some other explanation, like poor coding praxis in my functions that can explain the sluggish behavior? Or, is this a bug with recent updates of these packages? If so and if someone is more experienced with reporting bugs to tidyverse, then here is a repex showing the behavior cause I feel that this is out of my ballpark.

            ...

            ANSWER

            Answered 2021-Jun-15 at 14:37

            This is the issue I had in mind. These problems have been known to happen with vroom, rather than with the spec_tbl_df class, which does not really do much.

            vroom does all sorts of things to try and speed reading up; AFAIK mostly by lazy reading. That's how you get all those different components when comparing the two datasets.

            With vroom:

            Source https://stackoverflow.com/questions/67978477

            QUESTION

            Meaning of "don't move data over channels, move ownership of data over channels"
            Asked 2021-Jun-14 at 08:58

            I'm learning that Golang channels are actually slower than many alternatives provided by the language. Of course, they are really easy to grasp but because they are a high level structure, they come with some overhead.

            Reading some articles about it, I found someone benchmarking the channels here. He basically says that the channels can transfer 10 MB/s, which of course must be dependant on his hardware. He then says something that I haven't completely understood:

            If you just want to move data quickly using channels then moving it 1 byte at a time is not sensible. What you really do with a channel is move ownership of the data, in which case the data rate can be effectively infinite, depending on the size of data block you transfer.

            I've seen this "move ownership of data" in several places but I haven't seen a solid example illustrating how to do it instead of moving the data itself.

            I wanted to see an example in order to understand this best practice.

            ...

            ANSWER

            Answered 2021-Jun-14 at 03:22

            Moving data over a channel:

            Source https://stackoverflow.com/questions/67963061

            QUESTION

            Execution Error - Handler 'lambda_handler' missing on module 'lambda_function'"
            Asked 2021-Jun-12 at 19:30

            Below is the code and the error that I'm getting while testing in Lambda. I'm a newbie in python & serverless. Please help. This is created for uploading the findings from the security hub to S3 for POC.

            ...

            ANSWER

            Answered 2021-Jun-12 at 16:33

            When we use Lambda we need to write our code inside the lambda_handler method
            "def lambda_handler(event, context):" .

            As you mentioned you are using lambda to run this code then probably the below code should work for you.

            Source https://stackoverflow.com/questions/67948324

            QUESTION

            Spark executors and shuffle in local mode
            Asked 2021-Jun-12 at 16:13

            I am running a TPC-DS benchmark for Spark 3.0.1 in local mode and using sparkMeasure to get workload statistics. I have 16 total cores and SparkContext is available as

            Spark context available as 'sc' (master = local[*], app id = local-1623251009819)

            Q1. For local[*], driver and executors are created in a single JVM with 16 threads. Considering Spark's configuration which of the following will be true?

            • 1 worker instance, 1 executor having 16 cores/threads
            • 1 worker instance, 16 executors each having 1 core

            For a particular query, sparkMeasure reports shuffle data as follows

            shuffleRecordsRead => 183364403
            shuffleTotalBlocksFetched => 52582
            shuffleTotalBlocksFetched => 52582
            shuffleLocalBlocksFetched => 52582
            shuffleRemoteBlocksFetched => 0
            shuffleTotalBytesRead => 1570948723 (1498.0 MB)
            shuffleLocalBytesRead => 1570948723 (1498.0 MB)
            shuffleRemoteBytesRead => 0 (0 Bytes)
            shuffleRemoteBytesReadToDisk => 0 (0 Bytes)
            shuffleBytesWritten => 1570948723 (1498.0 MB)
            shuffleRecordsWritten => 183364480

            Q2. Regardless of the query specifics, why is there data shuffling when everything is inside a single JVM?

            ...

            ANSWER

            Answered 2021-Jun-11 at 05:56
            • executor is a jvm process when you use local[*] you run Spark locally with as many worker threads as logical cores on your machine so : 1 executor and as many worker threads as logical cores. when you configure SPARK_WORKER_INSTANCES=5 in spark-env.sh and execute these commands start-master.sh and start-slave.sh spark://local:7077 to bring up a standalone spark cluster in your local machine you have one master and 5 workers, if you want to send your application to this cluster you must configure application like SparkSession.builder().appName("app").master("spark://localhost:7077") in this case you can't specify [*] or [2] for example. but when you specify master to be local[*] a jvm process is created and master and all workers will be in that jvm process and after your application finished that jvm instance will be destroyed. local[*] and spark://localhost:7077 are two separate things.
            • workers do their job using tasks and each task actually is a thread i.e. task = thread. workers have memory and they assign a memory partition to each task in order to they do their job such as reading a part of a dataset into its own memory partition or do a transformation on read data. when a task such as join needs other partitions, shuffle occurs regardless weather the job is ran in cluster or local. if you were in cluster there is a possibility that two tasks were in different machines so Network transmission will be added to other stuffs such as writing the result and then reading by another task. in local if task B needs the data in the partition of the task A, task A should write it down and then task B will read it to do its job

            Source https://stackoverflow.com/questions/67923596

            QUESTION

            Julia: Heatmap with color gradient centered at 0
            Asked 2021-Jun-10 at 23:46

            In a heatmap, how could I create a three-color gradient, with blue for negative values, red for positive values and white for zero, such that with many zero values, much of the heatmap would be white (and not light red as with the default gradient).

            ...

            ANSWER

            Answered 2021-Jun-10 at 22:07

            You can compute the maximum absolute value in your array, then use it to set the clims argument. c.f. http://docs.juliaplots.org/latest/generated/attributes_subplot/

            Source https://stackoverflow.com/questions/67923277

            QUESTION

            How to perform a nested list comprehension with a break?
            Asked 2021-Jun-09 at 19:08

            I have a large DataFrame of distances that I want to classify.

            ...

            ANSWER

            Answered 2021-Jun-08 at 20:36

            You can vectorize the calculation using numpy:

            Source https://stackoverflow.com/questions/67892687

            QUESTION

            Compare the values in two monotonic increasing vectors
            Asked 2021-Jun-09 at 12:59

            I have two monotonic increasing vectors, v1 and v2 of unequal lengths. For each value in v1 (e.g., v1[1], v1[2], ...), I want to find the value in v2 that is just less than v1[i] and compute the difference.

            My current code (see below) works correctly, but does not seem to scale up well. So I am looking for recommendations to improve my approach with the requirement of staying in R, or using a package I can call from R.

            Example code:

            ...

            ANSWER

            Answered 2021-Jun-09 at 12:59

            QUESTION

            Polybase External Tables vs. OPENROWSET serverless sql pool architecture
            Asked 2021-Jun-09 at 09:33

            I am in search of performance benchmarks for querying parquet ADLS files with the standard dedicated sql pool using external tables with polybase vs. serverless sql pool and OPENROWSET views. From my base queries on a 1.5 billion record table, it does appears OPENROWSET in serverless sql pool is around 30% more performant given time for the same query, but what are the architecture that power that? Are there any readily available performance benchmarks?

            ...

            ANSWER

            Answered 2021-Jun-09 at 09:33

            The architecture behind Azure Synapse SQL Serverless Pools and how it achieves such a strong performance is described in this paper, it is called "Polaris".

            http://www.vldb.org/pvldb/vol13/p3204-saborit.pdf

            Performance benchmarks have been published on multiple blogs. Be aware that this can only be a snapshot in time as those features are being improved constantly.

            Source https://stackoverflow.com/questions/67896757

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install Benchmark

            You can download it from GitHub.

            Support

            Contributions are more than welcome! If you have an improvement or a feature you wish to have added to Benchmark, then please don't hesitate to send a pull request!.
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