Messages in this thread | | | Date | Fri, 2 Mar 2007 14:08:21 +0300 | From | Evgeniy Polyakov <> | Subject | Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3 |
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On Fri, Mar 02, 2007 at 11:56:18AM +0100, Ingo Molnar (mingo@elte.hu) wrote: > > * Evgeniy Polyakov <johnpol@2ka.mipt.ru> wrote: > > > Even if kevent has the same speed, it still allows to handle _any_ > > kind of events without any major surgery - a very tiny structure of > > lock and list head and you can process your own kernel event in > > userspace with timers, signals, io events, private userspace events > > and others without races and invention of differnet hacks for > > different types - _this_ is main point. > > did it ever occur to you to ... extend epoll? To speed it up? To add a > new wait syscall to it? Instead of introducing a whole new parallel > framework?
Yes, I thought about its extension more than a year ago before started kevent, but epoll() is absolutely based on file structure and its file_operations with poll methodt, so it is quite impossible to work with sockets to implement network AIO. Eventually it had gathered a lot of other systems - do we really want to have per process signalfs, timerfs and so on - each simple structure must be bound to a file, which becomes too cost.
> Ingo
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