**UNIX is a registered trademark of AT&T in the US and other countries.` `

**One might seriously ask the question what good it is if ``only''
one subsystem within the kernel hangs if it is something like the
network on a diskless workstation.` `

**To understand why this number is
one
observes that the power-of-two algorithm yields sizes of 1, 2, 4, 8, ...` `
pages while the large block algorithm that allocates in multiples
of pages yields sizes of 1, 2, 3, 4, ... pages.` `
Thus for allocations of sizes between one and two pages
both algorithms use two pages;
it is not until allocations of sizes between two and three pages
that a difference emerges where the power-of-two algorithm will use
four pages while the large block algorithm will use three pages.` `