So file synching is a pain int he ass on MacOS so I made some tests with "wrk" tool to see what is what and how much request per second can each config handle. I started with install.php on D8 site as it is more about file and less about database and caching. Tool was used with this config (30s of requests)
wrk -d30s http://drupal.plain:8700/Docker with default synching on volume, config looks like ( - ./:/var/www/html)
2 threads and 10 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 0.00us 0.00us 0.00us nan%
Req/Sec 1.33 2.82 10.00 86.67%
16 requests in 30.08s, 261.81KB read
Socket errors: connect 0, read 0, write 0, timeout 16
Requests/sec: 0.53
Transfer/sec: 8.70KBDocker with cached synching on volume, config looks like ( - ./:/var/www/html:cached )
2 threads and 10 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 0.00us 0.00us 0.00us nan%
Req/Sec 2.74 4.75 20.00 85.71%
49 requests in 30.01s, 801.80KB read
Socket errors: connect 0, read 0, write 0, timeout 49
Requests/sec: 1.63
Transfer/sec: 26.71KB
Docker with docker-sync on volume, config looks like ( - docker-sync:/var/www/html )
2 threads and 10 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 470.56ms 99.42ms 1.17s 76.68%
Req/Sec 11.61 6.54 38.00 60.34%
635 requests in 30.07s, 10.15MB read
Requests/sec: 21.12
Transfer/sec: 345.51KBI also tried this with plain drupal 8 installation, so here are results
Plain website with native synch
2 threads and 10 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 88.11ms 80.00ms 708.84ms 91.38%
Req/Sec 73.38 22.19 121.00 69.85%
4083 requests in 30.05s, 40.29MB read
Requests/sec: 135.87
Transfer/sec: 1.34MB
Plain website with :cached on volumes
2 threads and 10 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 99.65ms 131.94ms 1.18s 93.92%
Req/Sec 72.09 21.74 120.00 71.96%
3999 requests in 30.02s, 39.46MB read
Requests/sec: 133.20
Transfer/sec: 1.31MBPlain drupal website with docker sync
2 threads and 10 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 32.50ms 14.91ms 245.35ms 88.86%
Req/Sec 158.63 26.98 212.00 72.19%
9469 requests in 30.08s, 93.44MB read
Requests/sec: 314.84
Transfer/sec: 3.11MBNumbers with request per second will vary between test, some ±10% sometimes even more but this are would be outliers in some average.
Interesting is that native synch turned out to be same or even faster than cached option when on vanilla drupal site.
For some extras here are some tests on DrupalVm setup that runs D7 site
Vagrant on d7 install.php file (NFS)
2 threads and 10 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 0.00us 0.00us 0.00us nan%
Req/Sec 9.60 12.26 30.00 80.00%
10 requests in 30.10s, 50.10KB read
Socket errors: connect 0, read 0, write 0, timeout 10
Requests/sec: 0.33
Transfer/sec: 1.66KB
Vagrant with d7 site installed (NFS)
2 threads and 10 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 30.80ms 10.41ms 133.64ms 78.73%
Req/Sec 161.88 30.05 212.00 80.51%
7645 requests in 30.10s, 460.53MB read
Socket errors: connect 0, read 0, write 0, timeout 10
Requests/sec: 254.00
Transfer/sec: 15.30MB