This is going to be a rather long-ish post with our latest update. We will have a community hangout this weekend to discuss all these in detail. First and foremost, we are going to have a community hangout this week coming, to discuss our latest progress with Phalcon and several changes that are required.
What we will discuss is as follows:
Method types - Interfaces
Zephir and subsequently Phalcon do not enjoy the ease of use and early detection of errors that pure PHP applications do, by using tools such as Psalm, PhpStan etc.
As a result, and especially for version 3, we had a lot of interface mis-alignments. Sadly, Zephir could not pick that up, and unless a developer wrote a custom component using the interface, these bugs remained undetected and of course not fixed.
public function fetchOne( string $sqlQuery, int $fetchMode = 2, placeholders = null ): array;
public function fetchOne( string $sqlQuery, $fetchMode = Enum::FETCH_ASSOC, $bindParams = null, $bindTypes = null ): array
The above still exists in the codebase, even with v4. Unfortunately, we missed that and a few others.
Because of the fact that Phalcon follows SemVer, we cannot change these interfaces in a minor version. It has to be a major one, and ample time given to developers to adjust their applications. More on the upcoming versions below.
Luckily, with the latest Zephir changes by Jeckerson and Alexndr, these misalignments are now detectable and will no longer be an issue in the future.
Because of the misalgined interfaces mentioned above, we cannot release a minor version, it has to be a major one (SemVer].
Our next version will be v5, which will be Phalcon v4 (as it is now), with corrected interfaces, supporting PHP 7.4 and PHP 8.0.
The PHP based version, the rewrite that we have been working on, translating Zephir code to PHP, will become v6.
Work has been continuous with Phalcon v4 and PHP 8. A new version of Zephir has been released - 0.13. This version will support only PHP 7.4 and PHP 8.0.
At the moment, for PHP 8.0, all tests are passing. What is left to do is check the Windows DLL builds. Sadly, we are still using AppVeyor for these builds which is a bit time consuming - we never had the chance to move that process to GitHub Actions, which we will do at some point in the future. One more thing in the todo list.
We have commissioned two members of the community to help with fully translating all the incubator code to v4. BeMySlaveDarlin and Arrim have been working on the relevant incubator repositories and we have seen significant progress in those repositories. The goal is to have everything ready very soon.
Since v4 has been a big leap forward for Phalcon with numerous changes, PHP version changes and additional corrections - mostly bugs that lingered in the framework for years - we have to figure out whether what we did made the framework faster or slower.
We mentioned in the past that our goal with Phalcon is to have full benchmark tests for every part of the code - similar to our goal to have full code coverage with our testing suite.
Our initial benchmarks revealled that Phalcon v4 with PHP 7.4 is twice as fast as for instance Symfony. The only slow area is a mass update (shown below). This will be investigated and adjusted as much as possible.
Running 15s test @ http://tfb-server:8080/updates?queries=20 32 threads and 512 connections Thread Stats Avg Stdev Max +/- Stdev Latency 177.55ms 153.24ms 1.40s 83.53% Req/Sec 102.93 30.65 212.00 67.85% Latency Distribution 50% 134.50ms 75% 244.08ms 90% 377.61ms 99% 716.98ms 49393 requests in 15.07s, 39.45MB read Requests/sec: 3277.69 Transfer/sec: 2.62MB
Running 15s test @ http://tfb-server:8080/update?queries=20 32 threads and 512 connections Thread Stats Avg Stdev Max +/- Stdev Latency 356.63ms 120.51ms 708.25ms 65.01% Req/Sec 45.97 25.02 141.00 63.28% Latency Distribution 50% 326.07ms 75% 448.23ms 90% 541.84ms 99% 628.60ms 21393 requests in 15.08s, 17.21MB read Requests/sec: 1418.42 Transfer/sec: 1.14MB
For the Fortunes benchmark (pick row from DB, transform to array, add +1 array to row, pass to view, render from view), Phalcon shines, out performing Symfony significantly in requests per second.
Running 15s test @ http://tfb-server:8080/fortunes 32 threads and 512 connections Thread Stats Avg Stdev Max +/- Stdev Latency 21.12ms 17.57ms 230.93ms 81.42% Req/Sec 0.86k 350.68 3.57k 69.59% Latency Distribution 50% 16.95ms 75% 28.84ms 90% 43.69ms 99% 82.11ms 411551 requests in 15.09s, 550.26MB read Requests/sec: 27266.51 Transfer/sec: 36.46MB
Running 15s test @ http://tfb-server:8080/fortunes 32 threads and 512 connections Thread Stats Avg Stdev Max +/- Stdev Latency 13.78ms 13.81ms 177.09ms 89.30% Req/Sec 1.41k 540.11 4.38k 68.62% Latency Distribution 50% 9.14ms 75% 17.22ms 90% 28.44ms 99% 71.15ms 675343 requests in 15.10s, 0.88GB read Requests/sec: 44724.82 Transfer/sec: 59.80MB
Running 15s test @ http://tfb-server:8080/fortunes 32 threads and 512 connections Thread Stats Avg Stdev Max +/- Stdev Latency 60.57ms 66.00ms 333.89ms 79.91% Req/Sec 419.39 131.83 1.61k 70.61% Latency Distribution 50% 21.00ms 75% 110.08ms 90% 163.33ms 99% 229.28ms 201303 requests in 15.10s, 277.41MB read Requests/sec: 13330.72 Transfer/sec: 18.37MB
And also (pick random row from DB)
Running 15s test @ http://tfb-server:8080/db 32 threads and 512 connections Thread Stats Avg Stdev Max +/- Stdev Latency 20.75ms 18.37ms 178.53ms 83.05% Req/Sec 0.90k 399.20 2.96k 63.66% Latency Distribution 50% 15.80ms 75% 28.02ms 90% 44.33ms 99% 87.83ms 433506 requests in 15.10s, 83.01MB read Requests/sec: 28708.22 Transfer/sec: 5.50MB
Phalcon Micro (7.4)
Running 15s test @ http://tfb-server:8080/db 32 threads and 512 connections Thread Stats Avg Stdev Max +/- Stdev Latency 11.03ms 12.62ms 366.82ms 90.57% Req/Sec 1.83k 573.82 8.97k 68.32% Latency Distribution 50% 7.04ms 75% 13.09ms 90% 22.95ms 99% 59.35ms 876569 requests in 15.08s, 167.85MB read Requests/sec: 58129.93 Transfer/sec: 11.13MB
Running 15s test @ http://tfb-server:8080/db 32 threads and 512 connections Thread Stats Avg Stdev Max +/- Stdev Latency 56.51ms 62.23ms 305.70ms 79.86% Req/Sec 463.98 147.24 1.62k 70.71% Latency Distribution 50% 18.16ms 75% 103.25ms 90% 154.10ms 99% 215.93ms 222923 requests in 15.10s, 49.06MB read Requests/sec: 14762.27 Transfer/sec: 3.25MB
Finally, from initial tests, we have not seen a boost - as we expected - between Phalcon with PHP 7.4 vs. Phalcon with PHP 8.0 and JIT. The only thing that we saw was a decrease in latency. More benchmarks will be required to see the actual difference between versions.
A lot of work, a lot of things to do. Thanks especially to Jeckerson who has been working on PHP 8 and managing the incubator projects along with other tasks.
Finally, a huge thanks as always to our community for helping out with finding bugs, reporting issues, and sharing ideas for Phalcon.
Chat - Q&A
<3 Phalcon Team