Hi Florian,
please note that the DCSS block device and its use for paging and/or
storing
file systems on it is not at risk of being discontinued.
Are any of your filesystems ext2 with -o xip?
with kind regards
Carsten Otte
System z firmware development / Boeblingen lab
---
Every revolution was first a thought in one man's mind;
and when the same thought occurs to another man, it is the key to that era.
- Ralph Waldo Emerson, Essays: First Series, 1841
Florian Bilek
<florian.bilek@gm
ail.com> To
Sent by: Linux on [email protected],
390 Port cc
<[email protected]
ist.edu> Subject
Re: Who's using execute in place?
12.02.2013 16:48
Please respond to
Linux on 390 Port
<[email protected]
ist.edu>
Dear Carsten,
We are using DCSS as replacement of a paging device on physical DASD. Works
great. I also run the production environment from a DCSS with root and /usr
filesystem loaded.
So I consider it as a very valuable facility.
Kind regards,
Florian
On Tue, Feb 12, 2013 at 10:36 AM, Carsten Otte <[email protected]> wrote:
> Dear Linux on z community,
>
> a few years ago we've introduced execute in place, which can be used to
> save some memory by using z/VM DCSS segments. Since the size of
> main memory for virtual servers has increased much faster than the size
> of binary executables and libraries since, this technique has become less
> attractive. Andrew Morton, the leading maintainer for the memory manager
> in Linux, has raised the question if this is still needed.
>
> Who's using execute in place in their environment today? What are your
> plans of future use? Can we discontinue the technology or shall we keep
> it around?
>
> with kind regards
> Carsten Otte
> System z firmware development / Boeblingen lab
> ---
> Every revolution was first a thought in one man's mind;
> and when the same thought occurs to another man, it is the key to that
era.
>
> - Ralph Waldo Emerson, Essays: First Series, 1841
>
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