Messages in this thread | | | Date | Thu, 10 Oct 2002 12:55:08 +0200 | From | Helge Hafting <> | Subject | Re: [PATCH] O_STREAMING - flag for optimal streaming I/O |
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Mark Mielke wrote: > I might be wrong, but it seems to me that O_STREAMING isn't the answer > to everything. The primary benefactors of O_STREAMING would be > applications that read very large files that do not fit into RAM, from > start to finish.
It don't have to be a file that don't fit into RAM. Remember, other running apps wants memory and cache too, so the "fair share" of memory for _this_ process is much smaller than all of RAM. So, O_STREAMING makes sense for all files where we know that we're going sequentially and that caching this for long won't help. (Because the contents likely will be pushed out before we need them again anyway (DVD case) or we know were going to delete the file, or we simply don't want to push anything else out even if we could cache this.)
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