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|
%global _empty_manifest_terminate_build 0
Name: python-linux-aio
Version: 0.4.1
Release: 1
Summary: Linux aio ABI wrapper
License: LGPLv3+
URL: https://github.com/isac322/linux_aio
Source0: https://mirrors.aliyun.com/pypi/web/packages/0a/14/04041de341534654eb6d7475ab8b6c25e057f43e612e21f7134ac744ad42/linux_aio-0.4.1.tar.gz
BuildArch: noarch
Requires: python3-linux-aio-bind
%description
**\[english\]** | [\[한국어 (korean)\]](https://github.com/isac322/linux_aio/blob/master/README.kor.md)
# linux_aio: Python wrapper for [Linux Kernel AIO](http://lse.sourceforge.net/io/aio.html)
[](https://travis-ci.com/isac322/linux_aio)
[](https://pypi.org/project/linux-aio/)
[](https://codecov.io/gh/isac322/linux_aio)
[](https://pypi.org/project/linux-aio/)
[](https://pypi.org/project/linux-aio/)
[](https://pypi.org/project/linux-aio/)
[](https://pypi.org/project/linux-aio/)
[](https://saythanks.io/to/isac322)
Python wrapper module that uses Linux Kernel AIO directly
## What is Linux Kernel AIO?
[Linux IO Models table](https://oxnz.github.io/2016/10/13/linux-aio/#io-models)
In summary, it allows non-blocking and asynchronous use of blocking IO operations such as [read(2)](http://man7.org/linux/man-pages/man2/read.2.html) and [write(2)](http://man7.org/linux/man-pages/man2/write.2.html).
### Related documents
- [Linux Asynchronous I/O](https://oxnz.github.io/2016/10/13/linux-aio/)
- [Linux Kernel AIO Design Notes](http://lse.sourceforge.net/io/aionotes.txt)
- [How to use the Linux AIO feature](https://github.com/littledan/linux-aio) (in C)
### **It is different from [POSIX AIO](http://man7.org/linux/man-pages/man7/aio.7.html)**
The POSIX AIO APIs have the `aio_` prefix, but the Linux Kernel AIO has the `io_` prefix.
There is already a POSIX AIO API for asynchronous I/O, but Linux implements it in glibc, a user-space library, which is supposed to use multi-threading internally.
So, as you can see from the experiment below, it's much worse than using the blocking IO API.
## Implementation & Structure
### Package `linux_aio`
- Implemented based on [linux_aio_bind](https://pypi.org/project/linux-aio-bind) package which is low-level binding of Linux kernel AIO.
- Unlike [linux_aio_bind](https://pypi.org/project/linux-aio-bind), it can be used without knowledge of `ctypes`
- Examples can be found in the code in the [test directory](https://github.com/isac322/linux_aio/tree/master/test).
## Example
Examples can be found in the code in the [test directory](https://github.com/isac322/linux_aio/tree/master/test).
## Notes & Limits
- Obviously available only on Linux
- Because it is a wrapper, it brings the constraints of Linux.
- It can not be used for files used as a kernel interface. (e.g. `cgroup`)
- [Sometimes it works as Blocking.](https://stackoverflow.com/questions/34572559/asynchronous-io-io-submit-latency-in-ubuntu-linux)
- There are some things that have been solved through development after posting.
- Some features are being added because they are still under development.
- There are also some features that are not supported when the Linux version is low
- You need to check [Linux man pages (4.16)](http://man7.org/linux/man-pages/man2/io_submit.2.html) and its related API documentation
## Evaluation
[Experiment script](https://gist.github.com/isac322/8606f5c464fa390cb88b47354981cdab) (requires python 3.7)
### Setup
- Distribution: Ubuntu Server 16.04.5 LTS
- Linux: 4.19.0
- CPU: 2-way Intel(R) Xeon(R) CPU E5-2683 v4 @ 2.10GHz
- MEM: total 64GB
- Storage: SK hynix SC300B SATA 512GB
- Python: 3.7.2 ([Ubuntu ppa](https://launchpad.net/~deadsnakes/+archive/ubuntu/ppa))
- Attempts to read a total of `1000` times in` 1ms` intervals.
- The file size varies from `1KB` to` 100KB`, but it is small.
- Experiment with increasing the number of files read at the same time
- Because we have experimented with high-performance server, there may be larger performance differences when testing on a typical desktop.
### Comparison target
- [aiofiles](https://pypi.org/project/aiofiles/) - Uses Thread pool
- [aiofile](https://pypi.org/project/aiofile/) - Uses POSIX AIO
- [libaio](https://pypi.org/project/libaio/) - Uses [libaio](http://lse.sourceforge.net/io/aio.html)
- [python built-in open()](https://docs.python.org/3/library/functions.html#open)
**It is not a perfectly fair comparison.**
`aiofiles` and `aiofile` are libraries that support [asyncio](https://docs.python.org/3/library/asyncio.html). Since `open()` is blocking, there is a disadvantage that you can not do any other work while IO is going on. `libaio` and `linux_aio` are non-blocking, but must be polled.
### Results
**It may differ from environment to environment.**
#### Runtime
- Unit: second
| # of files | 1 | 6 | 12 | 24 |
|:---------: |:-----: |:-----: |:-----: |:-----: |
| aiofiles | 1.681 | 3.318 | 5.354 | 9.768 |
| aiofile | 1.543 | 1.958 | 2.493 | 3.737 |
| libaio | 1.311 | 1.344 | 1.362 | 1.423 |
| open() | 1.252 | 1.322 | 1.375 | 1.481 |
| linux_aio | 1.305 | 1.327 | 1.353 | 1.431 |
#### Threads
| # of files | 1 | 6 | 12 | 24 |
|:---------: |:---: |:---: |:---: |:---: |
| aiofiles | 321 | 321 | 321 | 321 |
| aiofile | 3 | 8 | 15 | 26 |
| libaio | 1 | 1 | 1 | 1 |
| open() | 1 | 1 | 1 | 1 |
| linux_aio | 1 | 1 | 1 | 1 |
#### Memory
- Physical memory (Virtual memory)
| # of files | 1 | 6 | 12 | 24 |
|:---------: |:-------------- |:-------------- |:-------------- |:-------------- |
| aiofiles | 21MB (22.6GB) | 21MB (22.6GB) | 21MB (22.6GB) | 21MB (22.6GB) |
| aiofile | 17MB (258MB) | 17MB (654MB) | 17MB (1080MB) | 18MB (1949MB) |
| libaio | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) |
| open() | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) |
| linux_aio | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) |
#### CPU Utilization
| # of files | 1 | 6 | 12 | 24 |
|:---------: |------: |------: |-------: |-------: |
| aiofiles | 42.8% | 85.0% | 102.2% | 113.2% |
| aiofile | 31.4% | 52.4% | 67.0% | 84.0% |
| libaio | 14.0% | 16.0% | 17.2% | 20.6% |
| open() | 13.4% | 17.6% | 21.0% | 26.2% |
| linux_aio | 13.0% | 15.0% | 16.0% | 21.0% |
%package -n python3-linux-aio
Summary: Linux aio ABI wrapper
Provides: python-linux-aio
BuildRequires: python3-devel
BuildRequires: python3-setuptools
BuildRequires: python3-pip
%description -n python3-linux-aio
**\[english\]** | [\[한국어 (korean)\]](https://github.com/isac322/linux_aio/blob/master/README.kor.md)
# linux_aio: Python wrapper for [Linux Kernel AIO](http://lse.sourceforge.net/io/aio.html)
[](https://travis-ci.com/isac322/linux_aio)
[](https://pypi.org/project/linux-aio/)
[](https://codecov.io/gh/isac322/linux_aio)
[](https://pypi.org/project/linux-aio/)
[](https://pypi.org/project/linux-aio/)
[](https://pypi.org/project/linux-aio/)
[](https://pypi.org/project/linux-aio/)
[](https://saythanks.io/to/isac322)
Python wrapper module that uses Linux Kernel AIO directly
## What is Linux Kernel AIO?
[Linux IO Models table](https://oxnz.github.io/2016/10/13/linux-aio/#io-models)
In summary, it allows non-blocking and asynchronous use of blocking IO operations such as [read(2)](http://man7.org/linux/man-pages/man2/read.2.html) and [write(2)](http://man7.org/linux/man-pages/man2/write.2.html).
### Related documents
- [Linux Asynchronous I/O](https://oxnz.github.io/2016/10/13/linux-aio/)
- [Linux Kernel AIO Design Notes](http://lse.sourceforge.net/io/aionotes.txt)
- [How to use the Linux AIO feature](https://github.com/littledan/linux-aio) (in C)
### **It is different from [POSIX AIO](http://man7.org/linux/man-pages/man7/aio.7.html)**
The POSIX AIO APIs have the `aio_` prefix, but the Linux Kernel AIO has the `io_` prefix.
There is already a POSIX AIO API for asynchronous I/O, but Linux implements it in glibc, a user-space library, which is supposed to use multi-threading internally.
So, as you can see from the experiment below, it's much worse than using the blocking IO API.
## Implementation & Structure
### Package `linux_aio`
- Implemented based on [linux_aio_bind](https://pypi.org/project/linux-aio-bind) package which is low-level binding of Linux kernel AIO.
- Unlike [linux_aio_bind](https://pypi.org/project/linux-aio-bind), it can be used without knowledge of `ctypes`
- Examples can be found in the code in the [test directory](https://github.com/isac322/linux_aio/tree/master/test).
## Example
Examples can be found in the code in the [test directory](https://github.com/isac322/linux_aio/tree/master/test).
## Notes & Limits
- Obviously available only on Linux
- Because it is a wrapper, it brings the constraints of Linux.
- It can not be used for files used as a kernel interface. (e.g. `cgroup`)
- [Sometimes it works as Blocking.](https://stackoverflow.com/questions/34572559/asynchronous-io-io-submit-latency-in-ubuntu-linux)
- There are some things that have been solved through development after posting.
- Some features are being added because they are still under development.
- There are also some features that are not supported when the Linux version is low
- You need to check [Linux man pages (4.16)](http://man7.org/linux/man-pages/man2/io_submit.2.html) and its related API documentation
## Evaluation
[Experiment script](https://gist.github.com/isac322/8606f5c464fa390cb88b47354981cdab) (requires python 3.7)
### Setup
- Distribution: Ubuntu Server 16.04.5 LTS
- Linux: 4.19.0
- CPU: 2-way Intel(R) Xeon(R) CPU E5-2683 v4 @ 2.10GHz
- MEM: total 64GB
- Storage: SK hynix SC300B SATA 512GB
- Python: 3.7.2 ([Ubuntu ppa](https://launchpad.net/~deadsnakes/+archive/ubuntu/ppa))
- Attempts to read a total of `1000` times in` 1ms` intervals.
- The file size varies from `1KB` to` 100KB`, but it is small.
- Experiment with increasing the number of files read at the same time
- Because we have experimented with high-performance server, there may be larger performance differences when testing on a typical desktop.
### Comparison target
- [aiofiles](https://pypi.org/project/aiofiles/) - Uses Thread pool
- [aiofile](https://pypi.org/project/aiofile/) - Uses POSIX AIO
- [libaio](https://pypi.org/project/libaio/) - Uses [libaio](http://lse.sourceforge.net/io/aio.html)
- [python built-in open()](https://docs.python.org/3/library/functions.html#open)
**It is not a perfectly fair comparison.**
`aiofiles` and `aiofile` are libraries that support [asyncio](https://docs.python.org/3/library/asyncio.html). Since `open()` is blocking, there is a disadvantage that you can not do any other work while IO is going on. `libaio` and `linux_aio` are non-blocking, but must be polled.
### Results
**It may differ from environment to environment.**
#### Runtime
- Unit: second
| # of files | 1 | 6 | 12 | 24 |
|:---------: |:-----: |:-----: |:-----: |:-----: |
| aiofiles | 1.681 | 3.318 | 5.354 | 9.768 |
| aiofile | 1.543 | 1.958 | 2.493 | 3.737 |
| libaio | 1.311 | 1.344 | 1.362 | 1.423 |
| open() | 1.252 | 1.322 | 1.375 | 1.481 |
| linux_aio | 1.305 | 1.327 | 1.353 | 1.431 |
#### Threads
| # of files | 1 | 6 | 12 | 24 |
|:---------: |:---: |:---: |:---: |:---: |
| aiofiles | 321 | 321 | 321 | 321 |
| aiofile | 3 | 8 | 15 | 26 |
| libaio | 1 | 1 | 1 | 1 |
| open() | 1 | 1 | 1 | 1 |
| linux_aio | 1 | 1 | 1 | 1 |
#### Memory
- Physical memory (Virtual memory)
| # of files | 1 | 6 | 12 | 24 |
|:---------: |:-------------- |:-------------- |:-------------- |:-------------- |
| aiofiles | 21MB (22.6GB) | 21MB (22.6GB) | 21MB (22.6GB) | 21MB (22.6GB) |
| aiofile | 17MB (258MB) | 17MB (654MB) | 17MB (1080MB) | 18MB (1949MB) |
| libaio | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) |
| open() | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) |
| linux_aio | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) |
#### CPU Utilization
| # of files | 1 | 6 | 12 | 24 |
|:---------: |------: |------: |-------: |-------: |
| aiofiles | 42.8% | 85.0% | 102.2% | 113.2% |
| aiofile | 31.4% | 52.4% | 67.0% | 84.0% |
| libaio | 14.0% | 16.0% | 17.2% | 20.6% |
| open() | 13.4% | 17.6% | 21.0% | 26.2% |
| linux_aio | 13.0% | 15.0% | 16.0% | 21.0% |
%package help
Summary: Development documents and examples for linux-aio
Provides: python3-linux-aio-doc
%description help
**\[english\]** | [\[한국어 (korean)\]](https://github.com/isac322/linux_aio/blob/master/README.kor.md)
# linux_aio: Python wrapper for [Linux Kernel AIO](http://lse.sourceforge.net/io/aio.html)
[](https://travis-ci.com/isac322/linux_aio)
[](https://pypi.org/project/linux-aio/)
[](https://codecov.io/gh/isac322/linux_aio)
[](https://pypi.org/project/linux-aio/)
[](https://pypi.org/project/linux-aio/)
[](https://pypi.org/project/linux-aio/)
[](https://pypi.org/project/linux-aio/)
[](https://saythanks.io/to/isac322)
Python wrapper module that uses Linux Kernel AIO directly
## What is Linux Kernel AIO?
[Linux IO Models table](https://oxnz.github.io/2016/10/13/linux-aio/#io-models)
In summary, it allows non-blocking and asynchronous use of blocking IO operations such as [read(2)](http://man7.org/linux/man-pages/man2/read.2.html) and [write(2)](http://man7.org/linux/man-pages/man2/write.2.html).
### Related documents
- [Linux Asynchronous I/O](https://oxnz.github.io/2016/10/13/linux-aio/)
- [Linux Kernel AIO Design Notes](http://lse.sourceforge.net/io/aionotes.txt)
- [How to use the Linux AIO feature](https://github.com/littledan/linux-aio) (in C)
### **It is different from [POSIX AIO](http://man7.org/linux/man-pages/man7/aio.7.html)**
The POSIX AIO APIs have the `aio_` prefix, but the Linux Kernel AIO has the `io_` prefix.
There is already a POSIX AIO API for asynchronous I/O, but Linux implements it in glibc, a user-space library, which is supposed to use multi-threading internally.
So, as you can see from the experiment below, it's much worse than using the blocking IO API.
## Implementation & Structure
### Package `linux_aio`
- Implemented based on [linux_aio_bind](https://pypi.org/project/linux-aio-bind) package which is low-level binding of Linux kernel AIO.
- Unlike [linux_aio_bind](https://pypi.org/project/linux-aio-bind), it can be used without knowledge of `ctypes`
- Examples can be found in the code in the [test directory](https://github.com/isac322/linux_aio/tree/master/test).
## Example
Examples can be found in the code in the [test directory](https://github.com/isac322/linux_aio/tree/master/test).
## Notes & Limits
- Obviously available only on Linux
- Because it is a wrapper, it brings the constraints of Linux.
- It can not be used for files used as a kernel interface. (e.g. `cgroup`)
- [Sometimes it works as Blocking.](https://stackoverflow.com/questions/34572559/asynchronous-io-io-submit-latency-in-ubuntu-linux)
- There are some things that have been solved through development after posting.
- Some features are being added because they are still under development.
- There are also some features that are not supported when the Linux version is low
- You need to check [Linux man pages (4.16)](http://man7.org/linux/man-pages/man2/io_submit.2.html) and its related API documentation
## Evaluation
[Experiment script](https://gist.github.com/isac322/8606f5c464fa390cb88b47354981cdab) (requires python 3.7)
### Setup
- Distribution: Ubuntu Server 16.04.5 LTS
- Linux: 4.19.0
- CPU: 2-way Intel(R) Xeon(R) CPU E5-2683 v4 @ 2.10GHz
- MEM: total 64GB
- Storage: SK hynix SC300B SATA 512GB
- Python: 3.7.2 ([Ubuntu ppa](https://launchpad.net/~deadsnakes/+archive/ubuntu/ppa))
- Attempts to read a total of `1000` times in` 1ms` intervals.
- The file size varies from `1KB` to` 100KB`, but it is small.
- Experiment with increasing the number of files read at the same time
- Because we have experimented with high-performance server, there may be larger performance differences when testing on a typical desktop.
### Comparison target
- [aiofiles](https://pypi.org/project/aiofiles/) - Uses Thread pool
- [aiofile](https://pypi.org/project/aiofile/) - Uses POSIX AIO
- [libaio](https://pypi.org/project/libaio/) - Uses [libaio](http://lse.sourceforge.net/io/aio.html)
- [python built-in open()](https://docs.python.org/3/library/functions.html#open)
**It is not a perfectly fair comparison.**
`aiofiles` and `aiofile` are libraries that support [asyncio](https://docs.python.org/3/library/asyncio.html). Since `open()` is blocking, there is a disadvantage that you can not do any other work while IO is going on. `libaio` and `linux_aio` are non-blocking, but must be polled.
### Results
**It may differ from environment to environment.**
#### Runtime
- Unit: second
| # of files | 1 | 6 | 12 | 24 |
|:---------: |:-----: |:-----: |:-----: |:-----: |
| aiofiles | 1.681 | 3.318 | 5.354 | 9.768 |
| aiofile | 1.543 | 1.958 | 2.493 | 3.737 |
| libaio | 1.311 | 1.344 | 1.362 | 1.423 |
| open() | 1.252 | 1.322 | 1.375 | 1.481 |
| linux_aio | 1.305 | 1.327 | 1.353 | 1.431 |
#### Threads
| # of files | 1 | 6 | 12 | 24 |
|:---------: |:---: |:---: |:---: |:---: |
| aiofiles | 321 | 321 | 321 | 321 |
| aiofile | 3 | 8 | 15 | 26 |
| libaio | 1 | 1 | 1 | 1 |
| open() | 1 | 1 | 1 | 1 |
| linux_aio | 1 | 1 | 1 | 1 |
#### Memory
- Physical memory (Virtual memory)
| # of files | 1 | 6 | 12 | 24 |
|:---------: |:-------------- |:-------------- |:-------------- |:-------------- |
| aiofiles | 21MB (22.6GB) | 21MB (22.6GB) | 21MB (22.6GB) | 21MB (22.6GB) |
| aiofile | 17MB (258MB) | 17MB (654MB) | 17MB (1080MB) | 18MB (1949MB) |
| libaio | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) |
| open() | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) |
| linux_aio | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) | 17MB (76MB) |
#### CPU Utilization
| # of files | 1 | 6 | 12 | 24 |
|:---------: |------: |------: |-------: |-------: |
| aiofiles | 42.8% | 85.0% | 102.2% | 113.2% |
| aiofile | 31.4% | 52.4% | 67.0% | 84.0% |
| libaio | 14.0% | 16.0% | 17.2% | 20.6% |
| open() | 13.4% | 17.6% | 21.0% | 26.2% |
| linux_aio | 13.0% | 15.0% | 16.0% | 21.0% |
%prep
%autosetup -n linux_aio-0.4.1
%build
%py3_build
%install
%py3_install
install -d -m755 %{buildroot}/%{_pkgdocdir}
if [ -d doc ]; then cp -arf doc %{buildroot}/%{_pkgdocdir}; fi
if [ -d docs ]; then cp -arf docs %{buildroot}/%{_pkgdocdir}; fi
if [ -d example ]; then cp -arf example %{buildroot}/%{_pkgdocdir}; fi
if [ -d examples ]; then cp -arf examples %{buildroot}/%{_pkgdocdir}; fi
pushd %{buildroot}
if [ -d usr/lib ]; then
find usr/lib -type f -printf "\"/%h/%f\"\n" >> filelist.lst
fi
if [ -d usr/lib64 ]; then
find usr/lib64 -type f -printf "\"/%h/%f\"\n" >> filelist.lst
fi
if [ -d usr/bin ]; then
find usr/bin -type f -printf "\"/%h/%f\"\n" >> filelist.lst
fi
if [ -d usr/sbin ]; then
find usr/sbin -type f -printf "\"/%h/%f\"\n" >> filelist.lst
fi
touch doclist.lst
if [ -d usr/share/man ]; then
find usr/share/man -type f -printf "\"/%h/%f.gz\"\n" >> doclist.lst
fi
popd
mv %{buildroot}/filelist.lst .
mv %{buildroot}/doclist.lst .
%files -n python3-linux-aio -f filelist.lst
%dir %{python3_sitelib}/*
%files help -f doclist.lst
%{_docdir}/*
%changelog
* Tue Jun 20 2023 Python_Bot <Python_Bot@openeuler.org> - 0.4.1-1
- Package Spec generated
|
