[Info-vax] Apache + mod_php performance

[Lawrence D'Oliveiro]

On Fri, 11 Oct 2024 13:26:04 -0500, Craig A. Berry wrote:

> I don't think socket sharing is a privilege any more than file sharing
> is; more likely it's just a hint to the driver that it needs to do extra
> work to keep its internal state consistent when two processes are
> accessing it.

Surely having channels from two processes assigned to the same device is 
no different, as far as the device is concerned, from having two channels 
assigned to it in the same process. In VMS, process scheduling is 
completely decoupled from I/O management; once an I/O is queued, nothing 
further happens to affect the process until the completed request gets 
back to the I/O post-processing system, at which point it no longer 
concerns the device driver any more.

At least, that’s how it used to work in the VMS of old.