perf | tentative golang.org/x/sys/unix/linux/perf package

by acln0 Go Version: Current License: No License

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kandi X-RAY | perf Summary

perf is a Go library. perf has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

perf

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Quality

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Support

perf has a low active ecosystem.

It has 22 star(s) with 4 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

There are 7 open issues and 9 have been closed. On average issues are closed in 80 days. There are 4 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of perf is current.

Quality

perf has no bugs reported.

Security

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

License

perf does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

perf releases are not available. You will need to build from source code and install.

Top functions reviewed by kandi - BETA

kandi has reviewed perf and discovered the below as its top functions. This is intended to give you an instant insight into perf implemented functionality, and help decide if they suit your requirements.

open opens an event .
command runs the command .
SetOutput sets the output of the event
init configures events .
Command executes a command .
HardwareCacheCounters returns a list of counters for the given cache operation .
AllSoftwareCounters returns all software counters .
AllHardwareCounters returns all hardware counters .
Tracepoint creates a Configurator for a trace event .
Breakpoint returns a Configurator that sets the breakpoint event .

Get all kandi verified functions for this library.

perf Key Features

No Key Features are available at this moment for perf.

perf Examples and Code Snippets

No Code Snippets are available at this moment for perf.

Community Discussions

Trending Discussions on perf

Is it possible to return all values returned from an API response and pass them into the pipeline to use later?

Spark executors and shuffle in local mode

Template error: every value of the context object of every Fn::Sub object must be a string or a function that returns a string

App crashing when i try to change activity Intent

Multiple graphs and direction (rankdir) in one dot file (gvpack not doing what I want)

Segmentation fault while "from object_detection import model_lib_v2"

Is it possible to derive Web Vitals from chrome trace events data?

How to configure Dart Sass native executable (dart VM) in vue.config.js with sass-loader?

Moving data from AWS Aurora MySQL to another AWS Aurora MySQL with AWS Glue

How bitbake searches for recipe in build process?

QUESTION

Is it possible to return all values returned from an API response and pass them into the pipeline to use later?

Asked 2021-Jun-13 at 19:32

I have written the following function. It returns data from an API. It returns every value from the API call. What I would like to do is take out print(lichess_response) and either yield or return the reponse so I can call any value when I call the function. That way I don't have to write a function for each value.

My code:

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ANSWER

Answered 2021-Jun-13 at 19:32

If all you want is to collect what you are currently writing to standard output in a single list, that's simply

Source https://stackoverflow.com/questions/67961756

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?

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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

Template error: every value of the context object of every Fn::Sub object must be a string or a function that returns a string

Asked 2021-Jun-12 at 10:14

I want aws:SourceVpc to be added as list of string ["vpc-7830jkd", "vpc-a1236"] when i run this template in uat env and as string "vpc-1234" when i run in perf. It is working fine in perf env but when i run in uat i got below error.

Template error: every value of the context object of every Fn::Sub object must be a string or a function that returns a string. Any suggestions ?

Can this achieved by combining select, join and findinmap.

...

ANSWER

Answered 2021-Jun-12 at 10:12

Since you have condition now and your vpc list is hardcoded, you can use the following combination of Select and Sub to produce valid policy:

Source https://stackoverflow.com/questions/67942026

QUESTION

App crashing when i try to change activity Intent

Asked 2021-Jun-07 at 07:23

I've been trying to fix this for weeks but failed, when I click on login (indicated with the id "lin") to open a new activity the app crash, i don't know if it's a problem with the Intent or something else, here is the code. The manifest should be ok so I think it's a problem in the MainActivity with Intent ab. The other activity is called Qrcode. I tried to change appcompatactivty to activity but didn't work, i don't really know what to do.

Edit: I posted the code of the qrcode activity, i got it from the answers of this question : Android, How to read QR code in my application?, only for educational purpose of course.

Edit 2: logcat posted, sorry for any issues with asking this question, it's the first question i ask here.

Logcat

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ANSWER

Answered 2021-Jun-03 at 17:42

ur code in MainActivity seems ok and I think don't have any problem. In my opinion your Qrcode Activity has some bugs in it, like onCreate method, you should see the Logcat logs in android Studio, btw u can attach the Qrcode activity codes here, it is really helpful. another way to find the bug is by using the try-catch in your code and log the exception

Source https://stackoverflow.com/questions/67826053

QUESTION

Multiple graphs and direction (rankdir) in one dot file (gvpack not doing what I want)

Asked 2021-Jun-01 at 16:04

DISCLAIMER : I am French and so I am sorry in advance for my poor english. Please be nice, thank you very much.

So I have multiple files and graphs with different direction (rankdir). I must merge them to have one big coherent graph.

There is a part on the bottom with the classic toptobottom direction :

...

ANSWER

Answered 2021-Jun-01 at 16:04

try:

-array to combine as graphs (not clusters or nodes)
_i to combine the files in the order on the command line (not based on size)
3 to request 3 "columns" of graphs (not a 2x2 grid)

Source https://stackoverflow.com/questions/67785371

QUESTION

Segmentation fault while "from object_detection import model_lib_v2"

Asked 2021-May-28 at 14:40

While running models/research/object_detection/model_main_tf2.py from tensorflow/models (or just python -c "from object_detection import model_lib_v2") I get:

...

ANSWER

Answered 2021-May-28 at 14:40

I managed to resolve by downgrading Pillow to 7.0.0, downgrading numpy to 1.19.5 (which is the latest version still compatible with tensorflow 2.5.0 at the moment) and downgrading pycocotools to 2.0.0.

Source https://stackoverflow.com/questions/67669509

QUESTION

Is it possible to derive Web Vitals from chrome trace events data?

Asked 2021-May-27 at 21:00

I am hoping to get some advice with regards to calculating core web vitals without interacting with PerformanceObserver api but instead to use Chrome trace events.

Since the puppeteer operation is done at scale I prefer to not to interact with the page using page.evaluate but instead calculate the metrics if possible from the data I get using:

...

ANSWER

Answered 2021-May-27 at 21:00

The PerformanceTimeline domain used by the Chrome DevTools protocol may contain the kind of information you're looking for, similar to your screenshot.

The FCP, LCP, and CLS vitals are also recorded in the trace data and accessible via Puppeteer, but there are some caveats to consider:

The correct trace categories should be recorded. Refer to the categories used by DevTools.
The render and frame IDs should be used to disambiguate records between the top-level frame and any iframes. You can get these IDs from the TracingStartedInBrowser event.

Source https://stackoverflow.com/questions/67685533

QUESTION

How to configure Dart Sass native executable (dart VM) in vue.config.js with sass-loader?

Asked 2021-May-26 at 16:58

I am working on a SPA application built using vue.js 2.6, bootstrap-vue 2.8, sass 1.34 (dart-sass) as preprocessor and sass-loader 10.2.

With the time the project is getting quite big and we've switched from Node-Sass to Dart-Sass (as node-sass is deprecated).

Unfortunately, we're now getting performance issues when building or developping on the project, as it now takes approximately 15 minutes to create a new built, and we're often encountering high memory usage in development.

After reading this article, I figure out using the speed-measure-webpack-plugin that 95% of the compilation time is due to css compilation purposes as most of the SMP stacktrace contains such several entries:

...

ANSWER

Answered 2021-May-26 at 16:17

Using Dart VM from webpack/sass-loader is probably not possible

I had a feeling (confirmed by comments) that you are including too much with additionalData: '@import "@/assets/scss/app.scss";'

additionalData is pre-pended to any style compilation - which in case of Vue + sass-loader means that everything inside @/assets/scss/app.scss is compiled every time there is a

Source https://stackoverflow.com/questions/67706044

QUESTION

Moving data from AWS Aurora MySQL to another AWS Aurora MySQL with AWS Glue

Asked 2021-May-26 at 16:06

I have an AWS Aurora MySQL database on my production environment, and a separate AWS Aurora MySQL database on my performance environment. Periodically, I'll create a copy the production database, and use the copy as my database in my Performance environment, switching out the old performance database and replacing it with the new one.

Does AWS Glue provide the ability to move data from one Aurora MySQL database to another Aurora MySQL database? Could I use it to periodically (maybe once a week) copy over data from the Prod database to the Perf database? Also, if this is possible, would I be able to selectively copy data over from the prod MySQL, without necessarily losing data that was only added on the perf MySQL?

...

ANSWER

Answered 2021-May-26 at 16:06

May I suggest not to use Glue for a full copy of a database, but AWS DMS (Database Migration Service) instead.

You can do very quick 1-to-1 migrations between two databases with DMS. You spin a DMS instance (Linux server, low cost, turn it off when not in use), set up a source and a target endpoint, and a replication task, and you're good to go.

Here is a guide you can follow: https://docs.aws.amazon.com/dms/latest/sbs/chap-rdsoracle2aurora.html

Source https://stackoverflow.com/questions/67692848

QUESTION

How bitbake searches for recipe in build process?

Asked 2021-May-26 at 10:28

I am trying to find out that how bitbake search for recipe in build process ? For example, I have a recipe something like below:

...

ANSWER

Answered 2021-May-26 at 10:28

You have two different files: a .bb and a .bbappend.

A .bb is the base recipe of one (or multiple) packages. It generally describe how to fetch, configure, compile, install files in a package for your target.

A .bbappend file is an 'append' file. It allows a meta (here meta-petalinux) to modify an existing recipe in another meta without copying it. A .bbappend can modify any steps of the bb file: source fetch, configure, compile, install...

You can for example create your own bbappend of Gstreamer, to enable pango (disbaled by default on my Yocto). The bbappend filename is gstreamer1.0-plugins-base_%.bbappend and only contains PACKAGECONFIG_append = "pango"

The Yocto Manual can give you more information on bbappend files here.

Source https://stackoverflow.com/questions/67622813

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Vulnerabilities

No vulnerabilities reported

Install perf

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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