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logzio / elasticsearch-stress-test

Stress test tool for Elasticsearch
Apache License 2.0
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Why the test shows different the performance between Windows and Linux? #13

Open jcseok99 opened 7 years ago

jcseok99 commented 7 years ago

I used the your stress test code for checking performance of our systems such as Microsoft Windows 10, 10 Server, Linux(CentOS 7). In case of Linux(CentOS 7), It shows the 27-30 MB/s on the test using example 1. (python elasticsearch-stress-test.py --es_address 1.2.3.4 1.2.3.5 --indices 4 --documents 5 --seconds 120 --not-green --clients 5) But, On Windows 10 and 10 server shows the 2.7~4 MB/s. Why difference the performance between them? All of them have same configuration of elasticsearch such as heap size (2GB) and same hardwrare(CPU, RAM, SSD).

roiravhon commented 7 years ago

Well, I have to say i have never tested this on a windows machine :)

My guess would be something related to this https://github.com/logzio/elasticsearch-stress-test/blob/master/elasticsearch-stress-test.py#L211

can you run: sys.getsizeof(str("string"))

Under Windows and Linux to see the difference?

jcseok99 commented 7 years ago

Thank you for reply.

As your opinion, I was run the following code

start_time = time.time(); for i in range(1, 1000000): sys.getsizeof(str("string")) print("--- %s seconds ---" % (time.time() - start_time))

The result is follows.

On Wndows: image

On Linux(CentOs7): image

roiravhon commented 7 years ago

Hey @jcseok99! I think that it has been proven already that Linux is faster :)

Im more interrested in the output of sys.getsizeof(str("string")) as Linux and Windows might represent strings differently in the memory, which may impact the actual size calculated