26,885
questions with no upvoted or accepted answers
46
votes
1
answer
7k
views
How to resolve the BufferQueueProducer problem specifically on Android Q Pixel 3 and 3 XL devices, while Emulator works fine
I am using a surface texture view to display videos. The videos are shown in a carousel which is essentially a view pager.
I have already tried releasing the surface view on the surface gets destroyed ...
- 491
29
votes
0
answers
848
views
On Skylake (SKL) why are there L2 writebacks in a read-only workload that exceeds the L3 size?
Consider the following simple code:
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <err.h>
int cpu_ms() {
return (int)(clock()...
- 64k
20
votes
3
answers
3k
views
Azure SQL stored procedure ridiculously slow called from C#
Summary:
We have two identical databases, one on a local server, one on Azure.
We have a C# system that accesses these databases, calling stored procedures.
The stored procedures are running very, ...
- 762
17
votes
0
answers
1k
views
Costs of new AVX512 instruction - Scatter store
I'm playing around with the new AVX512 instruction sets and I try to understand how they work and how one can use them.
What I try is to interleave specific data, selected by a mask.
My little ...
- 911
16
votes
0
answers
274
views
RenderScript low performance on Samsung Galaxy S8
Context
I have an Android app that takes a picture, blurs the picture, removes the blur based on a mask and applies a final layer (not relevant). The last 2 steps, removing the blur based on a mask ...
16
votes
0
answers
2k
views
Slow Performance on HTTP PUT Calls via Chrome
I have an ASP.NET Web API that exposes all the verbs - the methods are basically empty.
To run the project, you can do this: spin up a new asp.net web project from VS 2017 - then choose Web API. ...
- 2,077
16
votes
1
answer
4k
views
What is regularInterceptedExpression in angular?
During debugging of my ng-app I've find out that most time of $digest takes regularInterceptedExpression. The question is, what is causes of triggering it?
- 705
16
votes
1
answer
3k
views
AEM performance issues (slow memory leak) org.slf4j.helpers.BasicMarker and org.slf4j.helpers.BasicMarkerFactory
I am currently using the Adobe Experience Manager (AEM also known as CQ) for a Client's site (Java platform). It uses OpenJDK:
java version "1.7.0_65"
OpenJDK Runtime Environment (rhel-2.5.1.2.el6_5-...
- 806
16
votes
0
answers
743
views
Accessing performance counters through a cluster
I am trying to find how to make performance monitoring available over a cluster, and I can't find seem to find anything while searching other than how to access performance counters for a cluster.
...
- 5,596
15
votes
2
answers
5k
views
High CPU Usage in React-Native
I'm working to reduce the CPU load on an RN app. I've built the app to a device, in release, and trimmed the console logs from the project. Even after doing this, the app is still around 33% CPU usage ...
- 2,724
15
votes
0
answers
7k
views
Determine TSC frequency on Linux
Given an x86 with a constant TSC, which is useful for measuring real time, how can one convert between the "units" of TSC reference cycles and normal human real-time units like nanoseconds using the ...
- 64k
15
votes
2
answers
2k
views
Android Studio: aapt.exe create too many processes and makes Android Studio very slow
This is my very first question on this website, so I apologize for any mistakes I do in this question.
Well to get to the point:
I currently have this problem with Android Studio, that it gets very ...
- 1,082
15
votes
4
answers
1k
views
Fragment caching and eager loading: How to get the best of both worlds?
It seems to me that fragment caching and eager loading are -- at least sometimes -- somewhat at odds with each other. Let's say I have a User who has many posts which each has many comments which in ...
- 10.9k
14
votes
1
answer
2k
views
PyCharm autocomplete slow
Autocomplete is slow for some python modules, for example for numpy:
https://www.youtube.com/watch?v=gcAjEElSUCc
It usually takes a second or two for autocomplete to start showing possible ...
- 323
14
votes
2
answers
20k
views
How to interpret pprof output?
I'm trying to profile an application written in go which apparently uses about 256 virtual memory (checked using ps aux). I'm trying to use pprof package and see what functions allocate/consume most ...
- 1,590