We all love benchmarks but we know it's difficult to do fair comparisons. That's why it's important to be very transparent about the protocol of the benchmark.
The benchmark uses a homemade demo web page. This web page is a fake e-commerce product offer page loading product details and reviews in JSON with two XHR requests.
We decided to use a homemade page because Lightpanda browser is not yet fully compliant and we wanted to be sure it would be able to execute the web page correctly to be comparable with Google Chrome.
Moreover, using this web page allows us to run the test with a local web server, reducing network request impacts to the bench.
We measure two metrics:
To run the benchmark, you have to install Hyperfine and GNU time tools.
We also expose the demo web page locally using a simple Go program, but you can use another web server if you want to.
On Debian Linux, you can use:
$ apt install time hyperfineYou have also to install Google Chrome and Lightpanda browser.
Clone the demo web page and expose the
public/ directory locally with a web server.
We use the simple Go program to expose the files in ws/ dir.
By default it exposes the public dir using the 1234 port.
$ go run ws/main.goThe tests are run in an AWS m5.large (x86_64) with a fresh Debian install.
This bench is a very basic test to compare the two software. We start the browser and request the fake web page once with full JS execution. The final DOMTree is rendered in stdout.
We use Google Chrome version 130.0.6723.58.
$ google-chrome --version
Google Chrome 130.0.6723.58And Lightpanda commit b846541ff69082f4d283155f0b3651ae0394a240.
$ hyperfine --warmup 3 --runs 20 --shell=none "google-chrome --user-data-dir=/tmp/bench_chrome --headless=new --dump-dom http://127.0.0.1:124/campfire-commerce/" "./lightpanda --dump http://127.0.0.1:1234/campfire-commerce/"
Benchmark 1: google-chrome --user-data-dir=/tmp/bench_chrome --headless=new --dump-dom http://127.0.0.1:124/campfire-commerce/
Time (mean ± σ): 598.7 ms ± 8.6 ms [User: 348.0 ms, System: 165.1 ms]
Range (min … max): 586.3 ms … 611.9 ms 20 runs
Benchmark 2: ./lightpanda --dump http://127.0.0.1:1234/campfire-commerce/
Time (mean ± σ): 19.6 ms ± 0.1 ms [User: 6.7 ms, System: 4.1 ms]
Range (min … max): 19.4 ms … 19.9 ms 20 runs
Summary
'./lightpanda --dump http://127.0.0.1:1234/campfire-commerce/' ran
30.50 ± 0.49 times faster than 'google-chrome --user-data-dir=/tmp/bench_chrome --headless=new --dump-dom http://127.0.0.1:124/campfire-commerce/'
$ /usr/bin/time -v google-chrome --user-data-dir=/tmp/bench_chrome --headless=new --dump-dom http://127.0.0.1:1234/campfire-commerce/
Command being timed: "google-chrome --user-data-dir=/tmp/bench_chrome --headless=new --dump-dom http://127.0.0.1:1234/campfire-commerce/"
User time (seconds): 0.34
System time (seconds): 0.19
Percent of CPU this job got: 94%
Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.57
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 174096
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 17
Minor (reclaiming a frame) page faults: 20609
Voluntary context switches: 2563
Involuntary context switches: 1618
Swaps: 0
File system inputs: 1048
File system outputs: 4576
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0
$ /usr/bin/time -v ./lightpanda --dump http://127.0.0.1:1234/campfire-commerce/
Command being timed: "./lightpanda --dump http://127.0.0.1:1234/campfire-commerce/"
User time (seconds): 0.00
System time (seconds): 0.00
Percent of CPU this job got: 92%
Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.01
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 21276
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 925
Voluntary context switches: 6
Involuntary context switches: 11
Swaps: 0
File system inputs: 0
File system outputs: 0
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0We compare now multiple page loads and js evaluations using Puppeteer, which connects to the browser using CDP (Chrome Debug Protocol).
To run the benchmark, you need ti install nodejs.
Once nodejs is installed, please run a npm install to install nodejs
dependencies, mainly Puppeteer.
You have also to install Google Chrome and Lightpanda browser, but the code is not publicly available yet.
The puppeteer/cdp.js benchmark accepts multiple env vars to be configured.
BROWSER_ADDRESSis the address of the running browser listening the CDP protocol, by defaultws://127.0.0.1:9222.BASE_URLis the base url of the running web reser to request, by defaulthttp://127.0.0.1:1234.RUNSis the number of pages loaded by the benchmark, default is100.
npm run bench-puppeteer-cdp starts a Puppeteer process
instance and load the page to extract data 100 times.
$ npm run bench-puppeteer-cdpGoogle Chrome
We use Google Chrome version 130.0.6723.58.
You have to start the browser first.
$ /usr/bin/time -v google-chrome --headless=new --remote-debugging-port=9222Then you can run the benchmark.
$ BROWSER_ADDRESS=http://127.0.0.1:9222 npm run bench-puppeteer-cdp
> [email protected] bench-puppeteer-cdp
> node puppeteer/cdp.js
................................................................................
....................
total runs 100
total duration (ms) 25218
avg run duration (ms) 248
min run duration (ms) 216
max run duration (ms) 451
Command being timed: "google-chrome --headless=new --remote-debugging-port=9222"
User time (seconds): 16.19
System time (seconds): 6.59
Percent of CPU this job got: 41%
Elapsed (wall clock) time (h:mm:ss or m:ss): 0:54.51
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 207828
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 138
Minor (reclaiming a frame) page faults: 265165
Voluntary context switches: 143625
Involuntary context switches: 82912
Swaps: 0
File system inputs: 35680
File system outputs: 169688
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0Lightpanda browser
We use Lightpanda commit b846541ff69082f4d283155f0b3651ae0394a240.
You have to start Lightpanda browser.
/usr/bin/time -v ./lightpandaThen you can run the benchmark.
$ npm run bench-puppeteer-cdp
> [email protected] bench-puppeteer-cdp
> node puppeteer/cdp.js
.
................................................................................
...................
total runs 100
total duration (ms) 2277
avg run duration (ms) 22
min run duration (ms) 18
max run duration (ms) 40
Command being timed: "./lightpanda"
User time (seconds): 1.05
System time (seconds): 0.55
Percent of CPU this job got: 17%
Elapsed (wall clock) time (h:mm:ss or m:ss): 0:09.25
Average shared text size (kbytes): 0
Average unshared data size (kbytes): 0
Average stack size (kbytes): 0
Average total size (kbytes): 0
Maximum resident set size (kbytes): 23456
Average resident set size (kbytes): 0
Major (requiring I/O) page faults: 0
Minor (reclaiming a frame) page faults: 62976
Voluntary context switches: 8189
Involuntary context switches: 2804
Swaps: 0
File system inputs: 0
File system outputs: 0
Socket messages sent: 0
Socket messages received: 0
Signals delivered: 0
Page size (bytes): 4096
Exit status: 0Console images generated with Carbon.