Hi, news for Arachne users: http://www.coli.uni-sb.de/~eric/stuff/soft/lbacache-2005jun19.zip is the first LBAcache which LOCKs the used XMS handle. Arachne users sometimes need this if they use the xswap feature: If xswap moves XMS data to disk while LBAcache uses the same XMS driver to cache disk data of the same disk, you get a spooky circular dependency. The same can happen with Windows 3.xx, but only if you use 386 mode or DOS boxes (which use dswap/wswap helpers), neither of which works yet in FreeDOS anyway... So basically the LBAcache update only improves things if you use Arachne or are using the cache with a fully Win3.x compatible kernel or with some environment where swap-RAM-to-disk gets spooky in combination with cache-disk- in-RAM. I assume that LBAcache still behaves like the 2004sep22 version in all aspects apart from XMS locking, but please test this yourself :-).
Technical background: If you LOCK an XMS handle, the XMS driver, e.g. HIMEM, tells you a fixed memory address for the handle and, and this is the point which is useful for us, makes sure that the handle exists completely in actual RAM and is never swapped to disk. Enjoy... Eric ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
