threads and VMS [Re: dce/rpc "client" api]

Luke Kenneth Casson Leighton lkcl at
Thu Aug 24 04:18:30 GMT 2000

On Wed, 23 Aug 2000, Jeremy Allison wrote:

> Luke Kenneth Casson Leighton wrote:
> > 
> > there may actually be a technical / speed issue that would, with some
> > performance penalty, speed samba up, for small numbers of clients and/or
> > for workstations that are running large numbers of simultaneous
> > programs/threads, where each program/thread on said workstation is making
> > significant usage of a single samba server.
> > 
> > [i.e. it's a multiplexing issue].
> No it's a POSIX thread security context issue.
> pthreads don't carry around a thread specific uid/gid list.
> Each smb user context needs to. Therefore it's very hard
> to get an efficient, pthread enabled user-mode smb server.

i was not referring to POSIX or unix threads.  i was also not suggesting
using threads to solve this particular problem, either.

john, could you describe the semantics of the VMS "IO Queue" kernel-level
API, if you are aware of it?


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