I am exploring the Java Mission Control 8.3 version. In the tutorial to which I am referring, they are using an older version of Java Mission Control 7.X. In the tutorial, they show a “Code Flow” tab that contains a “Hot Methods” section. I am unable to find the “Code Flow” tab or the “HotCode”. In Java Mission Control 8,
Tag: performance
Java / Kotlin – best approach for fast pixel wise image operations
Overall Problem – I want to do fast image modification in Android, and my current naive solution is too slow I’m building an Android app that will involve fast modification of streaming images. I am running it on a Samsung Galaxy S10. I’m new to Android, Java, and Kotlin, so please forgive any ignorance on my part. I’ve successfully decoded
Moving character efficiently on a row
Given input (items = 6, position = 3) creates a row of 6 items and a character positioned on item 3 {0,1,2,[3],4,5} A call to left() moves the character two positions to the left and the item at position 3 is removed {0,[1],2,4,5} The next call to right() moves the character two positions to the right and the item at
Does the use of Spring Webflux’s WebClient in a blocking application design cause a larger use of resources than RestTemplate
I am working on several spring-boot applications which have the traditional pattern of thread-per-request. We are using Spring-boot-webflux to acquire WebClient to perform our RESTful integration between the applications. Hence our application design requires that we block the publisher right after receiving a response. Recently, we’ve been discussing whether we are unnecessarily spending resources using a reactive module in our
The intellij idea takes up a lot of Ram [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question
Having two for loop in a single Java Method
I have a method shown in the code below, I have a hashmap buffer and queue with several list in both. I want to search a particular message to set it true when it is stable; the message could be in either the buffer or queue. is it alright to lump the two for loop within a single method? or
How to solve this java problem efficiently [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 months ago. Improve this question I am trying to solve this problem and I worked out a solution but its too slow, this is my approach: loop to add all
Slowness after migrating to Grails 5.1.1 – time spent on GrailsControllerUrlMappingInfo
Recently, we migrated our backend APIs from Grails 3 to Grails 5.1.1 Together with it we also upgraded java version to 11. Everything is running on Docker. Otherwise, nothing else has changed. After the migration, we are now facing performance issues. But it’s a weird one. First, we got some results from NewRelic: NewRelic is showing that org.grails.web.mapping.mvc.GrailsControllerUrlMappingInfo is to
Apache HttpClient: first call very slow, following calls very fast
I am using Apache HttpClient 4.5.13 since some years and I have no problems until today. In a Springboot app when it call a specific server, the first call (or the first call after some inactivity) required about 8 seconds (!!!) then all the following calls (to the same server) are very fast (less than a second). (The same call
Mysql query modification for best Performance
I am using a Round() function in MySQL query to get a SUM() value with 3 precision. But I am not sure whether this is the best way or get an actual value and round it off in java or js. I am a bit confused about which is the best practice and why? Select ROUND(SUM(ORDER_VALUE),3) from Orders or Answer