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Nuevas características del kernel 2.6

Alberto Bertogli
(albertogli@telpin.com.ar)

12/Dic/2003

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Cambios necesarios

Es necesario actualizar:
	procps (inc. ps, vmstat, top, y cia.)
	modutils (module-init-tools)
	mkinitrd
	aplicaciones especificas (filesystems, lvm, etc.)

Recomendado actualizar glibc a 2.3.2

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Inclusive realizados estos cambios, es posible ir y venir entre 2.4 y 2.6 sin
ningun problema.

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"Sintomas" de 2.6

	Muchisimo mas escalable
	Mejor respuesta bajo carga
	Mas "interactivo"
	Mejor manejo de disco
	Carga de interrupciones baja aun con mucho trafico de red

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MM, scheduling, etc.

	O(1) scheduler
	NPTL (Native Posix Thread Library)
	rmap
	sysenter
	preempt
	futexes
	CPU affinity
	IRQ balancing

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HD I/O

	bio
	Anticipatory Scheduler
	O_DIRECT
	AIO
	IDE y SCSI

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VFS/Filesystems

	sysfs
	ACL/EA
	Move mounts y operaciones atomicas
	JFS y XFS
	NFSv4 y NFS over TCP
	LVM2/dm

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Networking

	NAPI
	epoll
	ebtables
	IPSec
	IPVS
	SCTP
	MII

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Limites

	PID allocator
	32-bit UID/GID
	64-bit block devices
	mas dispositivos (extension major/minor)

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Otros cambios

	ALSA
	capabilities
	AGP y DRI
	Framebuffer
	Video 4 Linux
	USB
	User I/O
	device model
	Nuevas arquitecturas: UML, ia64, x86-64, uClinux, ppc64

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Preguntas