os/doc
3
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

Update the features page. Modified version of patch supplied.

Browse source 
PR:		docs/186614
Submitted by:	Allan Jude <freebsd@allanjude.com>
This commit is contained in:
Warren Block 2014-02-18 03:59:30 +00:00
parent 53452fecd6
commit 03011be15e
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=43976
1 changed files with 95 additions and 32 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

127
en_US.ISO8859-1/htdocs/features.xml
View file

@ -36,11 +36,68 @@
diverse and world-wide membership of the
volunteer &os; Project.</p>
<p><b>&os;&nbsp;9.0</b>, brings many new features
and performance enhancements with a special focus on desktop
support and security features.</p>
<p><b>&os;&nbsp;10.X</b> introduced many new features
and replaces many legacy tools with updated versions.</p>
<ul>
<li><b>bhyve</b>:
A new BSD licensed, legacy-free hypervisor has been imported
to the &os; base system. It is currently able to run all
supported versions of &os;, and with the help of the
grub-bhyve port, OpenBSD and Linux.</li>
<li><b>KMS And New drm2 Video Drivers</b>:
The new drm2 driver provides support for AMD GPUs up to the
Radeon HD 6000 series and provides partial support for
the Radeon HD 7000 family. &os; now also supports
Kernel Mode Setting for AMD and Intel GPUs.</li>
<li><b>Capsicum Enabled By Default</b>:
Capsicum has been enabled in the kernel by default, allowing
sandboxing of several programs that work within the
"capabilities mode", such as:
<ul>
<li>tcpdump</li>
<li>dhclient</li>
<li>hast</li>
<li>rwhod</li>
<li>kdump</li>
</ul>
</li>
<li><b>New Binary Packaging System</b>:
&os; now uses pkg, a vastly improved package management
system that supports multiple repositories, signed packages,
and safe upgrades. The improved system is combined with
more frequent official package builds for all supported
platforms and a new stable branch of the ports tree for
better long term support.</li>
<li><b>Unmapped I/O</b>:
The newly implemented concept of unmapped VMIO buffers
eliminates the need to perform costly TLB shootdowns for
buffer creation and reuse, reducing system CPU time by up to
25-30% on large SMP machines under heavy I/O load.</li>
</ul>
<p><b>&os;&nbsp;9.X</b> brought many new features
and performance enhancements with a special focus on desktop
support and security.</p>
<ul>
<li><b>OpenZFS</b>:
&os; 9.2 includes OpenZFS v5000 (Feature Flags), including
the feature flags:
<ul>
<li>async_destroy</li>
<li>empty_bpobj</li>
<li>lz4_compress</li>
</ul>
which allow ZFS destroy operations to happen in the
background, make snapshots consume less disk space, and
offers a better compression algorithm for compressed
datasets.</li>
<li><b>Capsicum Capability Mode</b>:
Capsicum is a set of features for sandboxing support, using
a capability model in which the capabilities are file
@ -59,14 +116,14 @@
These allow a structured way to dynamically extend the
kernel at runtime in an ABI preserving manner.</li>
<li><b>Accounting API:</b> has been implemented. It can keep
<li><b>Accounting API</b> has been implemented. It can keep
per-process, per-jail, and per-login class resource
accounting information. Note that this is neither built nor
installed by default. To build and install this, specify
the option RACCT in the kernel configuration file and rebuild
the base system as described in the &os; Handbook.</li>
<li><b>Resource-limiting API:</b> has been implemented.
<li><b>Resource-limiting API</b> has been implemented.
It works in conjunction with the RACCT resource accounting
implementation and takes user-configurable actions based on
the set of rules it maintains and the current resource
@ -74,17 +131,17 @@
rules in userland. Note that this is neither built nor
installed by default.</li>
<li><b>USB:</b> subsystem now supports USB packet filter.
<li><b>USB</b> subsystem now supports USB packet filter.
This allows capturing packets which go through each USB
host. The architecture of the packet filter is similar to that of
bpf. The userland program usbdump(8) has been
added.</li>
<li><b>Infiniband support:</b>, OFED (OpenFabrics Enterprise
<li><b>Infiniband support</b>: OFED (OpenFabrics Enterprise
Distribution) version 1.5.3 has been imported into the
base system.</li>
<li><b>TCP/IP network:</b> stack now supports the mod_cc(9)
<li><b>TCP/IP network</b> stack now supports the mod_cc(9)
pluggable congestion control framework. This allows TCP
congestion control algorithms to be implemented as
dynamically loadable kernel modules. Many kernel
@ -96,42 +153,48 @@
can be set by a new sysctl(8) variable
net.inet.tcp.cc.algorithm.</li>
<li><b>SU+J:</b> &os;'s Fast File System now supports soft
<li><b>SU+J</b>: &os;'s Fast File System now supports soft
updates with journaling. It introduces an intent log into
a softupdates-enabled file system which eliminates the need
for background fsck(8) even on unclean shutdowns.</li>
</ul>
<p><b>&os;&nbsp;8.X</b> brought many new
features and performance enhancements. With special focus on
a new USB stack, &os;&nbsp;8.X also shipped with experimental support
for NFSv4. A new TTY layer was introduced, which improves
scalability and resources handling in SMP enabled systems.</p>
<p>&os; includes a number of other great features:</p>
<ul>
<li><b>Netisr framework:</b> has been reimplemented for
parallel threading support. This is a kernel network
dispatch interface which allows device drivers (and other
packet sources) to direct packets to protocols for directly
dispatched or deferred processing. The new implementation
supports up to one netisr thread per CPU, and several
benchmarks on SMP machines show substantial performance
improvement over the previous version.</li>
<li><b>Firewalls:</b>
The base system includes IPFW and IPFilter, as well as a
modified version of the popular pf with improved SMP
performance. IPFW also includes the dummynet feature,
allowing network administrators to simular adverse network
conditions, including latency, jitter, packet loss and
limited bandwidth.</li>
<li><b>Jail improvements:</b> Jails now support multiple IPv4
and IPv6 addresses per jail, and also support SCTP.
Hierarchies of jails (jails-within-jails) are now supported,
and jails can now be restricted to subsets of available
CPUs.</li>
<li><b>Jails</b>
are a light-weight alternative to virtualization.
Allowing processes to be restricted to a namespace with
access only to the file systems and network addresses
assigned to that namespace. Jails are also Hierarchical,
allowing jails-within-jails.</li>
<li><b>Linux emulation:</b> layer has been updated to version
2.6.16 and the default Linux infrastructure port is now
emulators/linux_base-f10 (Fedora 10).</li>
<li><b>Linux emulation</b>
provides a system call translation layer that allows
unmodified Linux binaries to be run on &os; systems.</li>
<li><b>DTrace</b>
provides a comprehensive framework for tracing and
troubleshooting kernel and application performance issues
while under live load.</li>
<li><b>The Ports Collection</b> is a set of more than 23,000 third
party applications that can be easily installed and run on
&os;. The ports architecture also allows for easy
customization of the compile time options of many of the
applications.</li>
<li><b>Network Virtualization:</b> A container ("vimage") has
been implemented, extending the &os; kernel to maintain
multiple independent instances of networking state.
Vimage facilities can be used independently to create fully
multiple independent instances of networking state. Vimage facilities can be used independently to create fully
virtualized network topologies, and jail(8) can directly
take advantage of a fully virtualized network stack.</li>
</ul>