Subject: RE: sgml-parse and GC From: Peter Nilsson <pnidv96@xxxxxxxxxxxxxx> Date: Tue, 20 Jul 1999 11:43:51 +0200 (CEST) |
On Tue, 20 Jul 1999, Avi Kivity wrote: > On Tuesday, July 20, 1999 00:23, Peter Nilsson [SMTP:pnidv96@xxxxxxxxxxxxxx] > wrote: > > I think the best solution would be to replace the current in memory grove > > implementation with an implementation on disk with mmap'd files. Then all > > groves would be cached and memory management would be passed to the > > OS kernel. This, I think, was proposed several times before. > > > > I believe virtual memory and memory mapped files are the same thing in terms > of performance and OS management level. Allocating memory is similar to > mapping some of the swap space into your virtual memory space, except the OS > is free to choose where to place the data (possibly striping over several > disks). > Ofcourse, you're right. Sory. I don't know why that came up in my mind yesterday. > What you would get is grove persistence over invocations of the style > engine, which may or may not be a win. > It may be a win if you process the same document more than once. For example if you spit out different media from the same doc or use one document as a database which seldom changes but is searched many times. Walsh's docbook stylesheets do this for information about images if I remember correctly. There are other situations indeed. Regards, /Peter N -- '(?P . (?e . (?t . (?e . (?r))))) DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist
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