leakage | 🐛 Memory leak testing for node
kandi X-RAY | leakage Summary
kandi X-RAY | leakage Summary
Write leakage tests using Mocha or another test runner of your choice. Does not only support spotting and fixing memory leaks, but writing tests also enables you to prevent regressions and show that the code does not leak.
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QUESTION
valgrind not showing reachable memory leak source
detailsC++ application was built using cmake with following extra options:
...ANSWER
Answered 2021-Jun-11 at 14:51In case of problems with valgrind, it is always recommended to try with a recent version, either the last release or the git version.
Note that it is quite easy to recompile valgrind from sources, at it has very few dependencies.
In case of specific problems with stack traces, it is always useful to compare the stack traces produced by valgrind and gdb by using valgrind + gdb + vgdb.
Put a breakpoint in gdb at relevant places, and you can then compare the gdb stacktrace produced by the gdb backtrace command and the valgrind stacktrace produced by the monitoring command:
QUESTION
I am trying to obtain the polynomial equation of a surface which represents 4 variables: Leakage, pressure,dimension and speed. Basically I am trying to find the equation Leakage=f(pressure, dimension, speed). I managed to get polynomial coefficients and the intercept as shown below this post, but I don't know how to interpret them in a polynomial equation(ie: z= ao + alx + a2Y + a3XY + a4x2 + a5y2 + a6 x3 + a7x2 y + a8 x y2 + ag, etc.). Can someone help plz?:
...ANSWER
Answered 2021-Jun-02 at 11:59If you print poly.powers_, you should be able to interpret the meaning of each value.
QUESTION
When i login in my i.m getting memory leakage warning "Can't perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in a useEffect cleanup function"
Login function
...ANSWER
Answered 2021-May-28 at 09:22You are likely seeing this warning because you are queueing a route transition to another page in your app and enqueueing a state update. The transition occurs, the component unmounts, and then React tries to update state but can't.
SolutionRemove the state update calls from the app paths. Return the navigation, keep the last state update in the case that no conditions are met.
QUESTION
I am facing issue with spring cloud sleuth as it is leaking memory as I have gone through the dumps of my applications:
What does 13.05mb (40.3%) of Java Static org.springframework.cloud.sleuth.instrument.async.SleuthContextListener.CACHE
Spring Cloud Version: Hoxton.SR8 Spring Boot Version: 2.3.3.RELEASE
Please find the heapdump report below:
pls find the code repo below, which I am using in my appplication, Also on first run there is no memory leakage issue but on successive runs it shows the memory leakage issue as mentioned in the heapdump report
...ANSWER
Answered 2021-May-25 at 19:25You have a complete mix of versions. Why do you say that you're using Hoxton and Boot 2.3 if you're not using Hoxton, you're using Greenwich and Boot 2.1
QUESTION
How to disable the following warning in Chrome devtool's console?
...[Deprecation] The website requested a subresource from a network that it could only access because of its users' privileged network position. These requests expose non-public devices and servers to the internet, increasing the risk of a cross-site request forgery (CSRF) attack, and/or information leakage. To mitigate these risks, Chrome deprecates requests to non-public subresources when initiated from non-secure contexts, and will start blocking them in Chrome 92 (July 2021). See https://chromestatus.com/feature/5436853517811712 for more details.
ANSWER
Answered 2021-May-20 at 05:11I'm using Vue CLI, when the app starts, the following are printed in the terminal:
QUESTION
I'm trying to load a decent amount of audio segments in librosa (about 173K) all <15 sec for the most part and when I run my function, within 30 minutes my RAM is at 90%+ capacity used.. eventually crashing my computer completely.
The segments are .wav files and I've tried soundfile and audioread as standalone but same result. I also tried different iterator methods which doesn't work either. I've ran diagnostics on my RAM and everything is fine. Am I simply trying to loop through to many audio files at once? I would imagine that since my files are extremely small that this shouldn't be a problem. I've had no issues with memory leakage in the past or running large model job batches.
RAM: 16.0 GB Disk space for cache: 2TB of space
Tried this:
...ANSWER
Answered 2021-May-19 at 08:52Each loaded audio file will take up memory. This is roughly samplewidth_bytes * channels * samplerate * seconds_per_sample * number_of_samples bytes.
Using 16 kHz samplerate, loaded to 64 bit float, 1 channel, up to 15 seconds, and 173k audio files this is: (8*1*16000*15*173000)/1e9 = 332 GB.
So it will not fit in 16 GB of RAM.
This is not a memory leak issue, just that you are trying to load too much data at a time. Process the audio files one by one or in batches of up to 1-2k files instead.
QUESTION
I am deploying a django site for the first time on aws ubuntu linux ec2 instance. I used Apache and mySQL database. I was able to successfully deploy the site and it was accessible through my public IP but it gave a warning in the Chrome console:
[Deprecation] The website requested a subresource from a network that it could only access because of its users' privileged network position. These requests expose non-public devices and servers to the internet, increasing the risk of a cross-site request forgery (CSRF) attack, and/or information leakage. To mitigate these risks, Chrome deprecates requests to non-public subresources when initiated from non-secure contexts, and will start blocking them in Chrome 92 (July 2021).
My project uses Django Rest Framework to post and get requests. I have used react for frontend so I use its build folder as a template in django and my frontend sends request to the public ip of my server. I am also attaching my settings.py file in case any of my settings might be a problem.
I read somewhere that using a domain name would solve this error but I wasn't sure whether the issue was the same as mine. Also if this is the case then would I have to change the request url to my domain name instead of the public ip in my react build. This is my first time deploying a django site so any suggestions for my settings for deployment are appreciated. Thanks in advance. In case you guys need any more information please tell.
settings.py
...ANSWER
Answered 2021-May-16 at 18:10The warning went away after assigning a domain to the server.
QUESTION
I am fairly new to machine learning. I came across the concept of Data Leakage. The article says that always split the data before performing preprocessing steps.
My question is, do steps such as discretization, grouping categories to a single category to reduce cardinality, converting categorical variables to binary variables, etc. lead to Data Leakage?
Should I split the data to train and test set before applying these steps?
Also, which are the main preprocessing steps I really need to be cautious of in order to avoid data leakage?
...ANSWER
Answered 2021-May-16 at 00:11This is a very interesting topic and I'll try to keep it simple and brief. Data Leakage is the state where you have a ML model trained on predictors that are not found in real or production environments. If you do a pre-processing step on your training data, then you should do the same step on your testing data in order to make predictions, but this does not cause data leakage. Some ML libraries do this for you, like R's recipes from tidymodels.
Answering your question, you shouldn't be afraid of data leakage when performing pre-processing and feature engineering your data, but way before, when you define your problem and the data you will use to train the model that attemps to solve it. Here is an example I have faced repetedly in practice:
Supposse you are fitting a ML model to predict sales of some product in your company, one year into the future. To achieve this, you use the product's historical data and data of complementary and substitute goods. The model's training and testing performance is great and you plan to move the model to production, but you have a huge problem: the complementary and substitute products data is not going to be able until one year has happened. By that time, making a one year horizon prediction makes no sense, because you'll already have observed the sales data.
In conclusion, this case of data leakage can be prevented by forecasting your independent variables, or just using time series models that don't need more variables than the response. This is only one case of data leakage, but you can find more on Max Kuhn's great book "Feature Engineering and Selection: a practical approach for predictive models".
QUESTION
I am attempting to use BoW before ML on my text based dataset. But, I do not want my training set to influence my test set (i.e., data leakage). I want to deploy BoW on the train set before the test set. But, then my test set has different features (i.e., words) than my train set so the matrices are not the same size. I tried keeping columns in the test set that also appear in the train set but 1) My code is not right and 2) I do not think this is the most efficient procedure. I think I also need code to add filler columns? Here is what I have:
...ANSWER
Answered 2021-May-13 at 14:59You would normaliy fit the CountVectorizer only on the train set and use the same Vectorizer on the test set, e.g:
QUESTION
I'm currently trying to develop a spreadsheet that helps me write down malfunctioned convectors/windows inside my building (im working in the facility-management-business). Because each Floor has nearly 140 Windows and 80 convectors and we dont have a standardised way of writing down the problems/defects i wanna create a excel-sheet in Excel 2016.
Now because i have a touchscreen-laptop i wanna do me a favor and just press on the different cells in each category if there is a problem (A = broken motor, B = leakage in the pipe-system, ect.) and change its color.
If there is no problem, the Index-Color is green, if there is a problem, its red (darkred).
Now, i have the following VBA-script running, which adds a Cells-Value of 1 to each Cell and via Data-format ";;;" i hide it from being visible + switch the colors:
...ANSWER
Answered 2021-May-09 at 21:49I suggest you don't use VBA to color the cells, but conditional formatting. That will be a lot easier. Use your code to enter a number into the cell you touch, or remove it. Then use worksheet formulas to calculate the totals and use conditional formatting for the fill colours. That way you don't change the colors with VBA at all.
With each cell change, you want to update the table at the top to show a comma separated list of row numbers that are marked with that category letter. You can do that by using a change event that monitors only the data entry cells and then loops through all rows of data, column by column. If the current cell has the value 1, then append the row 's floor number to the summary table at the top.
Your layout for the summary table is different from the data entry layout, so there will need to be some extra code to identify which cell to write the result to.
Here is a similar layout that I used in my code.
This worksheet change event re-calculates the values in the summary table whenever a value in the input table has been changed. You need to adjust this code to reflect your worksheet target rows and columns, but the comments should help you figure that out.
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