Re: Apache + mod_php performance

On Mon, 30 Sep 2024 20:33:59 -0400, Arne Vajhøj wrote:

But efficiency is a problem. VMS does not do fork. Process creation
is expensive on VMS. None of that fancy moving descriptors over
Unix socket stuff.
 
VMS got plenty of methods for IPC. A solution with a fixed number
of processes doing IPC between each other may work fine.
 
But the concept of constantly starting new processes and killing
old processes is not going to perform great.

In other words, VMS still lives in a past world where its kind of
programming model worked fine, and has never adapted to the era of massive
parallelism and serving thousands of concurrent client connections.

(I can remember some benchmarks on NFS performance showing our VAX running
VMS outperforming the Unix machines -- very disconcerting to some Unix
fans in our Comp Sci department. Those days are long gone.)

VMS is the very definition of a “legacy platform”. Is it worth using for
new development? Doesn’t seem like it. Is there much point in porting old
VMS code from Alpha or Itanium to x86? Seems that, technical-debt-wise,
that is just treading water for a little longer, and prolonging the
inevitable.