Messages in this thread | | | Date | Tue, 8 Jun 1999 23:30:39 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: Preparations for ZD's upcoming Apache/Linux benchmark |
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On Wed, 9 Jun 1999, Arjan van de Ven wrote: > > data list, and if it encounters a request it can't handle, it just pushes > > the socket onto a accept-queue - so the user space side would just accept > > the socket as if it came to it directly. > > This sounds simple, but what about persistent connections? (I think it can > be done even then, though)
"persistent" as in connections that are re-used for multiple requests?
Yes, I think it should work even for a socket that has already been used for another transfer: the kernel can do one (or more) static content transfers over the same socket, and then when it gets a request it cannot handle it just passes the socket to user space as if it was new.
Sure, it's not really a new socket, but there isn't any way user space can know, so a standard apache or any other server would just never have seen the original requests on that socket. We may have to "fake" a header or similar on it, but at least it doesn't sound conecptually all that hard.
There may be implementation issues that make it impossible, of course. I have by no means looked very deply at the problem set.
Linus
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