max number of slabs per kernel module (kernel 2.6.17, suse) Post: 302160832

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Operating Systems Linux SuSE max number of slabs per kernel module (kernel 2.6.17, suse) Post 302160832 by Perderabo on Tuesday 22nd of January 2008 10:19:41 PM

01-22-2008

Administrator Emeritus

Not sure I follow you... more efficient than what? It sounds like you're still trying to compare slabs to zones. (That's like comparing TCP to ethernet.) But yes, slabs are efficient and tend to result in less fragmentation. However that "unused pages..." comment is off the mark. A freed slab tends to stay in its cache ready to be allocated again. Please read the book...I don't want to type the whole thing in. When you do, skip to page 329 "Interfacing the Slab Allocator with the Zoned Page Frame Allocator".

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LEARN ABOUT FREEBSD

aio

AIO(4)							   BSD Kernel Interfaces Manual 						    AIO(4)

NAME

     aio -- asynchronous I/O

SYNOPSIS

     To link into the kernel:
     options VFS_AIO

     To load as a kernel loadable module:
	   kldload aio

DESCRIPTION

     The aio facility provides system calls for asynchronous I/O.  It is available both as a kernel option for static inclusion and as a dynamic
     kernel module.

SEE ALSO

     aio_cancel(2), aio_error(2), aio_read(2), aio_return(2), aio_suspend(2), aio_waitcomplete(2), aio_write(2), lio_listio(2), config(8),
     kldload(8), kldunload(8)

HISTORY

     The aio facility appeared as a kernel option in FreeBSD 3.0.  The aio kernel module appeared in FreeBSD 5.0.

BSD
								 October 24, 2002							       BSD