Messages in this thread |  | | Subject | Re: [patch] vmfixes-2.4.0-test9-B2 - fixing deadlocks | From | "Juan J. Quintela" <> | Date | 26 Sep 2000 00:30:28 +0200 |
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>>>>> "andrea" == Andrea Arcangeli <andrea@suse.de> writes:
Hi
andrea> I'm talking about the fact that if you have a file mmapped in 1.5G of RAM andrea> test9 will waste time rolling between LRUs 384000 pages, while classzone andrea> won't ever see 1 of those pages until you run low on fs cache.
Which is completely wrong if the program uses _any not completely_ unusual locality of reference. Think twice about that, it is more probable that you need more that 300MB of filesystem cache that you have an aplication that references _randomly_ 1.5GB of data. You need to balance that _always_ :((((((
I think that there is no silver bullet here :(
Later, Juan.
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