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Posted to notifications@dubbo.apache.org by "dao-jun (via GitHub)" <gi...@apache.org> on 2023/11/22 19:44:10 UTC
[PR] Introduce I/O URing for netty4 remoting [dubbo]
dao-jun opened a new pull request, #13406:
URL: https://github.com/apache/dubbo/pull/13406
## What is the purpose of the change
Support I/O Uring
## Brief changelog
## Verifying this change
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Re: [PR] Introduce I/O URing to netty4 remoting [dubbo]
Posted by "AlbumenJ (via GitHub)" <gi...@apache.org>.
AlbumenJ commented on PR #13406:
URL: https://github.com/apache/dubbo/pull/13406#issuecomment-1846460467
> > > > What are the advantages of I/O URing?
> > >
> > >
> > > Please see: https://man.archlinux.org/man/io_uring.7.en
> >
> >
> > This is a comparison from the kernel level. I wonder what benefit it would bring to Dubbo?
>
> Generally speaking, it provides higher-performance, I/O uring is an async I/O mechanism, unlike select/poll/epoll_wait, it reduces the number of system calls.
>
> `cq` in I/O uring is user mode memory, so reading to `cq` will not cause the current thread to trapped into kernel mode.
Can you pls provide a benchmark result of it?
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Re: [PR] Introduce I/O URing to netty4 remoting [dubbo]
Posted by "AlbumenJ (via GitHub)" <gi...@apache.org>.
AlbumenJ commented on PR #13406:
URL: https://github.com/apache/dubbo/pull/13406#issuecomment-1831854717
What are the advantages of I/O URing?
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Re: [PR] Introduce I/O URing to netty4 remoting [dubbo]
Posted by "dao-jun (via GitHub)" <gi...@apache.org>.
dao-jun commented on PR #13406:
URL: https://github.com/apache/dubbo/pull/13406#issuecomment-1863953427
@AlbumenJ I don't have a linux machine, but I found this: https://github.com/netty/netty/issues/10622#issuecomment-701241587
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Re: [PR] Introduce I/O URing to netty4 remoting [dubbo]
Posted by "AlbumenJ (via GitHub)" <gi...@apache.org>.
AlbumenJ commented on PR #13406:
URL: https://github.com/apache/dubbo/pull/13406#issuecomment-1837737234
> > What are the advantages of I/O URing?
>
> Please see: https://man.archlinux.org/man/io_uring.7.en
This is a comparison from the kernel level. I wonder what benefit it would bring to Dubbo?
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Re: [PR] Introduce I/O URing to netty4 remoting [dubbo]
Posted by "dao-jun (via GitHub)" <gi...@apache.org>.
dao-jun commented on PR #13406:
URL: https://github.com/apache/dubbo/pull/13406#issuecomment-1837137654
> What are the advantages of I/O URing?
Please see: https://man.archlinux.org/man/io_uring.7.en
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Re: [PR] Introduce I/O URing to netty4 remoting [dubbo]
Posted by "dao-jun (via GitHub)" <gi...@apache.org>.
dao-jun commented on PR #13406:
URL: https://github.com/apache/dubbo/pull/13406#issuecomment-1842037734
> > > What are the advantages of I/O URing?
> >
> >
> > Please see: https://man.archlinux.org/man/io_uring.7.en
>
> This is a comparison from the kernel level. I wonder what benefit it would bring to Dubbo?
Generally speaking, it provides higher-performance, I/O uring is an async I/O mechanism, unlike select/poll/epoll_wait, it reduces the number of system calls.
`cq` in I/O uring is user mode memory, so reading to `cq` will not cause the current thread to trapped into kernel mode.
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