Investigate memory usage limits in 1.0

[zachleat]

eleventy-benchmark seems to have a upper memory limit on the number of templates that can be processed. It’s somewhere between 1000 and 10000. This is a lower limit than previous versions. Investigate!

https://github.com/11ty/eleventy-benchmark

[zachleat]

Just did two successful runs of eleventy-benchmark on Canary 47 with 10000 and 20000 files respectively. Probably made better with the fix in #2139.

/Code/eleventy-benchmark (master ✘)✹✭ ᐅ npm start   

> [email protected] start /Users/zachleat/Code/eleventy-benchmark
> ./bench.sh

---------------------------------------------------------
Eleventy Benchmark (Node v14.17.5, 10000 templates each)
---------------------------------------------------------
Eleventy 1.0.0-canary.47                                        
---------------------------------------------------------
.njk: ... 3 runs.       
* Median: 4.87 seconds
* Median per template: 0 ms

~/Code/eleventy-benchmark (master ✘)✹✭ ᐅ npm start

> [email protected] start /Users/zachleat/Code/eleventy-benchmark
> ./bench.sh

---------------------------------------------------------
Eleventy Benchmark (Node v14.17.5, 20000 templates each)
---------------------------------------------------------
Eleventy 1.0.0-canary.47                                        
---------------------------------------------------------
.njk: ... 3 runs.       
* Median: 8.51 seconds
* Median per template: 0 ms

Gonna close this one!