Open Source › mORMot Framework

Entries feed - Comments feed

2021-08-17

mORMot 2 on Ampere AARM64 CPU

Last weeks, we have enhanced mORMot support to one of the more powerful AARM64 CPU available: the Ampere Altra CPU, as made available on the Oracle Cloud Infrastructure.

Long story short, this is an amazing hardware to run on server side, with performance close to what Intel/AMD offers, but with almost linear multi-core scalability. The FPC compiler is able to run good code on it, and our mORMot 2 library is able to use the hardware accelerated opcodes for AES, SHA2, and crc32/crc32c.

Continue reading

2021-06-26

Embed Small and Optimized Debug Information for FPC

Debug information can be generated by compilers, to contain symbols and source code lines. This is very handy to have a meaningful stack trace on any problems like exceptions, at runtime.

The problem is that debug information can be huge. New code style with generics tends to increase this size into a bloated way...
On Delphi, mormot2tests generates a 4MB .map file;
on FPC, mormot2tests outputs a 20MB .dbg file in DWARF.

For Delphi, we propose our own binary .mab format which reduces this 4MB .map file into a 290KB .mab file since mORMot 1.
Now mORMot 2 can reduce a FPC debug file of 20MB into a 322KB .mab file!
And this .mab information can just be appended to the executable for single-file distribution, if needed, during the build. No need to distribute two files, potentially with synchronization issues.

Continue reading

2021-05-14

Enhanced HTTP/HTTPS Support in mORMot 2

HTTP(S) is the main protocol of the Internet.
We enhanced the mORMot 2 socket client to push its implementation into more use cases. The main new feature is perhaps WGET-like processing, with hashing, resuming, console feedback, and direct file download.

Continue reading

2021-05-08

Enhanced Faster ZIP Support in mORMot 2

The .zip format is from last century, back to the early DOS days, but can still be found everywhere. It is even hidden when you run a .docx document, a .jar application, or any Android app!
It is therefore (ab)used not only as archive format, but as application file format / container - even if in this respect using SQLite3 may have much more sense.

We recently enhanced our mormot.core.zip.pas unit:

  • to support Zip64,
  • with enhanced .zip read/write,
  • to have a huge performance boost during its process,
  • and to integrate better with signed executables.

Continue reading

2021-02-22

OpenSSL 1.1.1 Support for mORMot 2

Why OpenSSL? OpenSSL is the reference library for cryptography and secure TLS/HTTPS communication. It is part of most Linux/BSD systems, and covers a lot of use cases and algorithms. Even if it had some vulnerabilities in the past, it has been audited and validated for business use. Some algorithms  […]

Continue reading

2021-02-13

Fastest AES-PRNG, AES-CTR and AES-GCM Delphi implementation

Last week, I committed new ASM implementations of our AES-PRNG, AES-CTR and AES-GCM for mORMot 2.
They handle eight 128-bit at once in an interleaved fashion, as permitted by the CTR chaining mode. The aes-ni opcodes (aesenc aesenclast) are used for AES process, and the GMAC of the AES-GCM mode is computed using the pclmulqdq opcode.

Resulting performance is amazing: on my simple Core i3, I reach 2.6 GB/s for aes-128-ctr, and 1.5 GB/s for aes-128-gcm for instance - the first being actually faster than OpenSSL!

Continue reading

2021-02-12

New AesNiHash for mORMot 2

I have just committed some new AesNiHash32 AesNiHash64 AesNiHash128 Hashers for mORMot 2. They are using AES-NI and SSE4.1 opcodes on x86_64 and i386. This implementation is faster than the fastest SSE4.1 crc32c and with a much higher usability (less collisions). Logic was extracted from the Go  […]

Continue reading

2020-12-29

mORMot 2 Proposal: Rename RawUTF8 Type As Utf8 ?

One proposal for mORMot 2. What if we renamed the RawUTF8 type into Utf8? With a default compatibility redirection if PUREMORMOT2 is not defined, of course. The "Raw" prefix came from early mORMot code, which used TRichView as reference for the UTF-8 encoding... but it is clearly an  […]

Continue reading

2020-11-16

mORMot 2 Entering Testing Phase

mormot2test.jpg, Nov 2020

After a lot of work, our mORMot 2 fork is entering its testing phase.

The main /src/core /src/lib /src/net /src/db /src/orm /src/soa /src/app folders of our Source Code repository have been implemented.

mormot2test.jpg, Nov 2020

Please check https://github.com/synopse/mORMot2 for the latest version of the source code. The README.md files on each folder would help you discover the new framework design, and the content of each unit.

Continue reading

2020-11-04

EKON 24 Presentation Slides

EKON_24.png, Nov 2020

EKON 24 just finished. "The conference for Delphi & more" was fully online this year, due to the viral context... But this was a great event, and I am very happy to have been part of it. Please find the slides on my two sessions: mORMot 2 Performance: from Delphi to AVX2 Of course,  […]

Continue reading

2020-10-26

mORMot2 Renaming

Last weeks, we introduced REST, ORM and SOA process in the mORMot2 repository.

During this phase, we split the huge mORMot.pas unit into several mormot.rest.*.pas, mormot.orm.*.pas and mormot.soa.*.pas units, to follow SOLID principles.

But we also renamed the base types into something more consistent and easier to work with. Forget about TSQLRecord or TSQLRest, discover TORM and TRest!

Continue reading

2020-08-11

The RFC, The URI, and The Tilde

For several reasons, only plain ASCII characters are accepted in Web URIs. Other characters should be escaped with % and the hexadecimal value of its code.

The tilde character ~ is not needed to be escaped... at least in theory... because in practice most code expects it...

A journey into confusing RFCs...

Continue reading

2020-07-20

Special Care of Delphi 10.4

sillybug.jpg, Jul 2020

A regression in the Delphi 10.4 compiler was identified. Its optimizer wrongly deletes some code, in one very specific part of the framework.

sillybug.jpg, Jul 2020

As a result a GPF (Access violation) may be triggered with Delphi 10.4 in release mode - the debug mode (when optimization is disabled) has no problem. Thanks to great user feedback, we were able to circumvent it. But we should better stay in alert, like any mORMot, until Delphi 10.4 officially release a patch.

Continue reading

2020-06-05

SQlite3 Encryption Not Possible Any More Since 3.32.x

About latest SQlite3 3.32.xxx there is a big problem with codecs.

Critical changes to the public SQLite code were introduced on Feb 7, 2020: “Simplify the code by removing the unsupported and undocumented SQLITE_HAS_CODEC compile-time option”. With the release of SQLite version 3.32.0 on May 22, 2020 these changes finally took officially effect, although they weren't officially announced.

As a sad and unexpected consequence, we are NOT ANY MORE able to compile the new SQlite3 amalgamation with our encryption patch.

Continue reading

2020-05-07

New Multi-thread Friendly Memory Manager for FPC written in x86_64 assembly

As a gift to the FPC community, I just committed a new Memory Manager for FPC.
Check mormot.core.fpcx64mm.pas in our mORMot2 repository.
This is a stand-alone unit for FPC only.

It targets Windows and Linux multi-threaded Service applications - typically mORMot daemons.
It is written in almost pure x86_64 assembly, and some unique tricks in the Delphi/FPC Memory Manager world.

It is based on FastMM4 (not FastMM5), and we didn't follow the path of the FastMM4-AVX version - instead of AVX, we use plain good (non-temporal) SSE2 opcode, and we rely on the mremap API on Linux for very efficient reallocation. Using mremap is perhaps the biggest  benefit of this memory manager - it leverages a killer feature of the Linux kernel for sure. By the way, we directly call the Kernel without the need of the libc.

We tuned our x86_64 assembly a lot, and made it cross-platform (Windows and POSIX). We profiled the multi-threading, especially by adding some additional small blocks for GetMem (which is a less expensive notion of "arenas" as used in FastMM5 and most C allocators), introducing an innovatice and very efficient round-robin of tiny blocks (<128 bytes), and proper spinning for FreeMem and medium blocks.

It runs all our regression tests with huge performance and stability - including multi-threaded tests with almost no slow down: sleep is reported as less than 1 ms during a 1 minute test. It has also been validated on some demanding multi-threaded tasks.

Continue reading

2020-03-30

Debriefing of mORMot2 Survey

Thanks you all for have posted your feedback on our mORMot2 Survey!

Here are some insights.

Continue reading

2020-03-28

Faster Double-To-Text Conversion

On server side, a lot of CPU is done processing conversions to or from text. Mainly JSON these days.

In mORMot, we take care a lot about performance, so we have rewritten most conversion functions to have something faster than the Delphi or FPC RTL can offer.
Only float to text conversion was not available. And RTL str/floattexttext performance, at least under Delphi, is not consistent among platforms.
So we just added a new Double-To-Text set of functions.

Continue reading

2020-03-06

We Need U: Survey about mORMot 2.0

First of all, if it was not clear enough: Delphi will continue to be supported in mORMot 2.0. Some people reported that our previous article may have been misleading. But perhaps not all versions. For sure, Delphi 5 and Kylix will not be supported in mORMot 2. It is also possible that it would not  […]

Continue reading

2020-03-03

Preparing Revision 2.x of the mORMot Framework

The more I think of it, the more I am convinced it is time to change how the framework is versioned.
We have version 1.18 since years... difficult to follow... time to upgrade!


I would like to upgrade mORMot to version 2 - with a major refactoring.

Continue reading

2020-02-17

New move/fillchar optimized sse2/avx asm version

Our Open Source framework includes some optimized asm alternatives to RTL's move() and fillchar(), named MoveFast() and FillCharFast().

We just rewrote from scratch the x86_64 version of those, which was previously taken from third-party snippets.
The brand new code is meant to be more efficient and maintainable. In particular, we switched to SIMD 128-bit SSE2 or 256bit AVX memory access (if available), whereas current version was using 64-bit regular registers. The small blocks (i.e. < 32 bytes) process occurs very often, e.g. when processing strings, so has been tuned a lot. Non temporal instructions (i.e. bypassing the CPU cache) are used for biggest chunks of data. We tested ERMS support, but it was found of no benefit in respect to our optimized SIMD, and was actually slower than our non-temporal variants. So ERMS code is currently disabled in the source, and may be enabled on demand by a conditional.

FPC move() was not bad. Delphi's Win64 was far from optimized - even ERMS was poorly introduced in latest RTL, since it should be triggered only for blocks > 2KB. Sadly, Delphi doesn't support AVX assembly yet, so those opcodes would be available only on FPC.

Resulting numbers are talking by themselves. Working on Win64 and Linux, of course.

Continue reading

- page 2 of 13 -