FreeBSD 10.0-RELEASE Release Notes

The FreeBSD Project

FreeBSD 10.0-RELEASE Release Notes

The FreeBSD Project

FreeBSD is a registered trademark of the FreeBSD Foundation.

IBM, AIX, OS/2, PowerPC, PS/2, S/390, and ThinkPad are @@ -58,10 +58,7 @@ for shootdown on big-SMP machines and eliminating up to 25-30% of the system time on i/o intensive workloads. [r248508]

[amd64] The maximum amount of memory the FreeBSD kernel can address has been increased from 1TB to - 4TB. [r254466]

A new cpuset(2) API has been added for thread to CPU - binding and CPU resource grouping and assignment. The - cpuset(1) userland utility has been added to allow - manipulation of processor sets.

The ddb(4) kernel debugger now has an + 4TB. [r254466]

The ddb(4) kernel debugger now has an output capture facility. Input and output from ddb(4) can now be captured to a memory buffer for later inspection using sysctl(8) or a textdump. The new @@ -70,28 +67,7 @@ consisting of a set of ddb(4) commands. These commands can be managed from within ddb(4) or with the use of the new ddb(8) utility. More details can be found in the - ddb(4) manual page.

The kernel now supports a new textdump format - of kernel dumps. A textdump provides higher-level information - via mechanically generated/extracted debugging output, rather - than a simple memory dump. This facility can be used to - generate brief kernel bug reports that are rich in debugging - information, but are not dependent on kernel symbol tables or - precisely synchronized source code. More information can be - found in the textdump(4) manual page.

Kernel support for M:N threading has been removed. While - the KSE (Kernel Scheduled Entities) project was quite successful - in bringing threading to FreeBSD, the M:N approach taken by the - KSE library was never developed to its full potential. - Backwards compatibility for applications using KSE threading - will be provided via libmap.conf(5) for dynamically linked - binaries. The FreeBSD Project greatly appreciates the work of - Julian Elischer, Daniel Eischen, and David Xu on KSE support.

The FreeBSD kernel now exports information about certain kernel - features via the kern.features sysctl tree. - The feature_present(3) library call provides a convenient - interface for user applications to test the presence of - features.

[amd64] The FreeBSD kernel now has support for large - memory page mappings (“superpages”).

[amd64,i386,ia64,powerpc] The ULE - scheduler is now the default process scheduler - in GENERIC kernels.

[amd64,i386] Support was added for + ddb(4) manual page.

[amd64,i386] Support was added for the new Intel on-CPU Bull Mountain random number generator, found on IvyBridge and supposedly later CPUs, accessible with the RDRAND instruction. [r240135]

2.2.1. Virtualization support

[amd64] The BSD Hypervisor, @@ -395,7 +371,7 @@ hv_vmbus_load="YES"

pkg(7) is the next generation FreeBSD package manager, also referred to as “pkgng”. [r257444]

2.6. Release Engineering and Integration

The supported version of the GNOME desktop environment - (x11/gnome2) has been + (x11/gnome2) has been updated from 2.20.1 to 2.22.

3. Upgrading from previous releases of FreeBSD

[amd64,i386] Beginning with FreeBSD 6.2-RELEASE, binary upgrades between RELEASE versions (and snapshots of the various security branches) are supported using the freebsd-update(8)