Date: Thu, 1 Jan 1970 00:30:05 +0000 From: Tim Mawhinney <timmawhinney@mac.com> To: freebsd-questions@FreeBSD.ORG Subject: Darwin Message-ID: <47E124FE-1DD6-11B2-940B-00039346738E@mac.com>
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--Apple-Mail-1-947148889 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; format=flowed The Free BSD site boasts the features below:- * A merged virtual memory and filesystem buffer cache continuously tunes the amount of memory used for programs and the disk cache. As a result, programs receive both excellent memory management and high performance disk access, and the system administrator is freed from the task of tuning cache sizes. * Compatibility modules enable programs for other operating systems to run on FreeBSD, including programs for Linux, SCO UNIX, NetBSD, and BSD/OS. * Kernel Queues allow programs to respond more efficiently to a variety of asynchronous events including file and socket IO, improving application and system performance. * Accept Filters allow connection-intensive applications, such as web servers, to cleanly push part of their functionality into the operating system kernel, improving performance. * Soft Updates allows improved file system performance without sacrificing safety and reliability. It analyzes meta-data filesystem operations to avoid having to perform all of those operations synchronously. Instead, it maintains internal state about pending meta-data operations and uses this information to cache meta-data, rewrite meta-data operations to combine subsequent operations on the same files, and reorder meta-data operations so that they may be processed more efficiently. * Support for IPsec and IPv6 allows improved security in networks, and support for the next-generation Internet Protocol, IPv6. I just wondered how many of these features Darwin now includes due to its substantial FreeBSD lineage. Thanks, Tim Mawhinney. --Apple-Mail-1-947148889 Content-Transfer-Encoding: 7bit Content-Type: text/enriched; charset=US-ASCII <fontfamily><param>Times New Roman</param><bigger>The Free BSD site boasts the features below:- * <bold>A merged virtual memory and filesystem buffer cache</bold> continuously tunes the amount of memory used for programs and the disk cache. As a result, programs receive both excellent memory management and high performance disk access, and the system administrator is freed from the task of tuning cache sizes. * <bold>Compatibility modules</bold> enable programs for other operating systems to run on FreeBSD, including programs for Linux, SCO UNIX, NetBSD, and BSD/OS. * <bold>Kernel Queues</bold> allow programs to respond more efficiently to a variety of asynchronous events including file and socket IO, improving application and system performance. * <bold>Accept Filters</bold> allow connection-intensive applications, such as web servers, to cleanly push part of their functionality into the operating system kernel, improving performance. * <bold>Soft Updates</bold> allows improved file system performance without sacrificing safety and reliability. It analyzes meta-data filesystem operations to avoid having to perform all of those operations synchronously. Instead, it maintains internal state about pending meta-data operations and uses this information to cache meta-data, rewrite meta-data operations to combine subsequent operations on the same files, and reorder meta-data operations so that they may be processed more efficiently. * <bold>Support for IPsec and IPv6</bold> allows improved security in networks, and support for the next-generation Internet Protocol, IPv6. I just wondered how many of these features Darwin now includes due to its substantial FreeBSD lineage. Thanks, Tim Mawhinney.</bigger></fontfamily> --Apple-Mail-1-947148889-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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