stress-test-many-posts

stress-test-many-posts

This is a utility which adds millions of posts to the (local) boards realm to test how memory and transaction time change with lots of realm storage.

Run

Start a local gno.land:

cd gno/gno.land
make install
gnoland start -lazy

Start gnoweb. In a separate terminal enter:

gnoweb

Run the utility. In a separate terminal enter:

cd gno/misc/stress-test/stress-test-many-posts
go run .

Monitor

This calls r/demo/boards to add testboard and a thread if they don't exist. This utility adds millions of replies to the first post on board #1. To monitor progress, in a web browser go to http://127.0.0.1:8888/r/demo/boards:testboard . The first post says something like "(100 replies)". Refresh your browser to see this number increase.

Optional speedup

This utility adds 50 replies per transaction (as allowed by the maximum gas of 100 million). By default gno.land does one transaction every 5 seconds. It is optional but recommended to decrease this time to 1 second as follows:

• In the terminal where you started gno.land, hit ctrl-C
• In a text editor, open gnoland-data/config/config.toml
• Change timeout_commit to "1s"
• Save and close the text editor.
• Restart gno.land by entering gnoland start -lazy
• In the terminal where you started the test, restart it by entering go run .

Now data is added 5 times faster. This can reduce adding a million replies from days to hours.

Test output

The utility prints results to the terminal in CSV which you can paste into a spreadsheet to analyze and graph. Below is a sample output. On average the transaction time is 1 second (if you did the optional speedup), but can be longer if the system becomes burdened with lots of data in memory.

nPosts, avg. for 50 posts [s], min for 50 posts [s], max for 50 posts [s]
1000, 1.044250, 1.015000, 1.136000
2000, 1.048650, 0.999000, 1.106000
3000, 1.047950, 1.021000, 1.079000
4000, 1.046450, 1.028000, 1.072000