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Diffstat (limited to 'UPDATING')
| -rw-r--r-- | UPDATING | 39 |
1 files changed, 39 insertions, 0 deletions
@@ -22,9 +22,48 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 9.x IS SLOW: machines to maximize performance. (To disable malloc debugging, run ln -s aj /etc/malloc.conf.) +20110608: + The following sysctls and tunables are retired on x86 platforms: + machdep.hlt_cpus + machdep.hlt_logical_cpus + The following sysctl is retired: + machdep.hyperthreading_allowed + The sysctls were supposed to provide a way to dynamically offline and + online selected CPUs on x86 platforms, but the implementation has not + been reliable especially with SCHED_ULE scheduler. + machdep.hyperthreading_allowed tunable is still available to ignore + hyperthreading CPUs at OS level. + Individual CPUs can be disabled using hint.lapic.X.disabled tunable, + where X is an APIC ID of a CPU. Be advised, though, that disabling + CPUs in non-uniform fashion will result in non-uniform topology and + may lead to sub-optimal system performance with SCHED_ULE, which is + a default scheduler. + +20110607: + cpumask_t type is retired and cpuset_t is used in order to describe + a mask of CPUs. + +20110531: + Changes to ifconfig(8) for dynamic address family detection mandate + that you are running a kernel of 20110525 or later. Make sure to + follow the update procedure to boot a new kernel before installing + world. + 20110513: Support for sun4v architecture is officially dropped +20110503: + Several KPI breaking changes have been committed to the mii(4) layer, + the PHY drivers and consequently some Ethernet drivers using mii(4). + This means that miibus.ko and the modules of the affected Ethernet + drivers need to be recompiled. + + Note to kernel developers: Given that the OUI bit reversion problem + was fixed as part of these changes all mii(4) commits related to OUIs, + i.e. to sys/dev/mii/miidevs, PHY driver probing and vendor specific + handling, no longer can be merged verbatim to stable/8 and previous + branches. + 20110430: Users of the Atheros AR71xx SoC code now need to add 'device ar71xx_pci' into their kernel configurations along with 'device pci'. |
