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ۼ : 06-01-16 11:15
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ʿϴ.

 (1) 츮 μ ü ƿ ʿ䰡 μ ũ Ǿ Ѵ.

 (2) μ ޸𸮿 ŵ ʿ䰡 ̸, ̶ Ұ ʿѵ, ̸ Ѵ.


ϳ Ǵ ̻ ũ Ƽ  뵵 ȴ. Ƽǵ ̰(raw) ̴. , ý . 4BSD ¡ Ű ũ Ƽ Ѵ. Ƽǵ ϳ Ƽ DZ (interleave) . ̰ Ƽǿ ϸ ϰ йѴ. ġ Ƽ Ÿ ̽ ȣ ̽ Ƽ ȴ. ̰ Ƽǰ Ƽǿ ȯȴ. ̰ Ƽǰ Ƽǿ ȯȴ.

, ƿ ʿ䰡 ִ ؼ Ҵ ȴ. ׷ å ޸ (overcommit) ߻, μ ִ. , װ α׷ ߿ ߻ Ѵٸ α׷ ġ ʰ ϰų 𸥴. ̸ ϱ , 4.3BSD ſ Ҵ å Ѵ. μ , Ŀ Ϳ ʿ ҴѴ. ϳ ū  ҴǾ, ణ Ȯ ִ ִ. ׷ (region)  Ŀ (region) ϵ ϱ Ҵؾ Ѵ. å , (region) Ǵ Ȯ ö ǵ ߻ϰ Ѵ.

ؽƮ (׸ ) ƿ ʿ䰡 . ֳϸ ׵ Ϸκ ٽ ֱ 빮̴. BSD ̴ ̴. ֳϸ Ͽ ޸𸮷 ҷ Ǹ, ȣ . Ϸκ ٽ ġ ٽ ϰ, δ ϳ ̻ ؾ Ѵ. ̰ ſ ũǷ, ̸ ϱ ׷ ȴ. μ α׷ ϰ ִٸ, ؽƮ 纻 ϳ ʿϴ. ؽƮ ũⰡ ̹Ƿ ؽƮ ϳ  Ҵ ִ. ̰ ϳ Բ ش.

Ŀ Ҵ dmap ü Ѵ. ù°  ũⰡ dmmin( 16KB)̴ ̾  ũⰡ dmmax( 0.5 ~ 2MB) ̸ ũ 2̴. ķ  ũⰡ dmmax̴. ü ũ 迭̴. 迭 Ҵ ̽ 󿡼  ּҸ ִ. ε(dmmin dmmax Բ)  ũ ȯȴ. 迭 ũ ̾ Ǵ ־ 㿵 ũ⿡ ش. u(area) Ϳ ʵ ִ. ؽƮ ũⰡ ؿ ־ ٸ ʵȴ. ؽƮ ϴ μ ϳ Ǹ ũ Ǹ ȴ. , ؽƮ Ϻ̴. Ҵ ũ dmtext( 512KB)  ,  ȴ.

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