[GitHub] [arrow] AlvinJ15 commented on pull request #12582: ARROW-14183: [C++] Improve select_k_unstable performance

Tue, 08 Mar 2022 23:45:03 -0800 


AlvinJ15 commented on pull request #12582:
URL: https://github.com/apache/arrow/pull/12582#issuecomment-1062638524


   Yes @cyb70289 I have different runs on my local.
   **master branch with** `K=10`
   
![image](https://user-images.githubusercontent.com/56335837/157382476-ab73d0c6-c709-4175-9dde-27fcb6011c2a.png)
   **RadixBatch + mergeK**
   
![image](https://user-images.githubusercontent.com/56335837/157382556-b3ca7b2c-b952-4c8a-aa55-05624569068e.png)
   
   **master branch with** `K=20`
   
![image](https://user-images.githubusercontent.com/56335837/157381889-25f01ee8-17ac-4b99-bdbb-88c8c1629763.png)
   **RadixBatch + mergeK**
   
![image](https://user-images.githubusercontent.com/56335837/157381933-a1f6fc96-7491-4338-bdbb-689f2cdb9692.png)
   
   **master branch with** `K=1000`
   
![image](https://user-images.githubusercontent.com/56335837/157395226-0991dbcf-904e-4adc-9b24-d41b7aca42c5.png)
   **RadixBatch + mergeK**
   
![image](https://user-images.githubusercontent.com/56335837/157395278-e14e772e-d6b0-4a86-97e0-24278f691384.png)
   
   **master branch with** `K=10000`
   
![image](https://user-images.githubusercontent.com/56335837/157395337-90e1f1d8-ed36-4174-ba28-abf1cd8639df.png)
   **RadixBatch + mergeK**
   
![image](https://user-images.githubusercontent.com/56335837/157395404-c0b519f2-147a-480c-9463-12f36135a8c4.png)
   
   **master branch with** `K=N/8`
   
![image](https://user-images.githubusercontent.com/56335837/157381624-1708c4a7-0580-4019-9e20-0f86970dbf9d.png)
   **RadixBatch + mergeK**
   
![image](https://user-images.githubusercontent.com/56335837/157381775-fb1cc63f-d92c-46bd-aa90-08de0332c517.png)
   
   
   
   
   
   
   


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