| /freebsd/share/man/man4/ |
| H A D | ada.4 | 47 concurrently, often re-ordering them to reduce the number and length of
63 Parameters affecting the device's cache are reported in device IDENTIFY data
68 The read cache is used to store data from device-initiated read ahead
77 performance.
78 This performance gain comes at a price.
83 a file system is non-deterministic and can cause corruption.
101 .Bl -tag -width 12
121 This variable determines whether to spin-down disks when shutting down.
122 Set to 1 to enable spin-down, 0 to disable.
129 Set to 1 to enable sorting, 0 to disable, -1 to leave it as-is.
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| H A D | da.4 | 43 The direct access class includes disk, magneto-optical,
44 and solid-state devices.
55 Parameters affecting the device's cache are stored in mode page 8,
61 The read cache is used to store data from device-initiated read ahead
73 performance.
74 This performance gain comes at a price.
79 a file system is non-deterministic and can cause corruption.
82 recently reported as complete, but it is none-the-less recommended that
100 concurrently, often re-ordering them to reduce the number and length of
110 the Read-Write Error Recovery mode page.
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| /freebsd/contrib/tzdata/ |
| H A D | NEWS | 3 Release 2025b - 2025-03-22 13:40:46 -0700
6 New zone for Aysén Region in Chile which moves from -04/-03 to -03.
10 Chile's Aysén Region moves from -04/-03 to -03 year-round, joining
12 2025-04-05 at 24:00, diverging from America/Santiago and creating a
14 this as a change to standard offset effective 2025-03-20.
18 Iran switched from +04 to +0330 on 1978-11-10 at 24:00, not at
23 'zic -l TIMEZONE -d . -l /some/other/file/system' no longer
28 Release 2025a - 2025-01-15 10:47:24 -0800
31 Paraguay adopted permanent -03 starting spring 2024.
32 Improve pre-1991 data for the Philippines.
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| /freebsd/contrib/tzcode/ |
| H A D | NEWS | 3 Release 2024b - 2024-09-04 12:27:47 -0700
10 Support POSIX.1-2024, which removes asctime_r and ctime_r.
11 Assume POSIX.2-1992 or later for shell scripts.
23 the years 1921-1927, 1931, 1945, 1949-1970, and 1981-1997.
34 changes affect a few transitions in 1917-192
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| /freebsd/sys/contrib/device-tree/Bindings/memory-controllers/ |
| H A D | nvidia,tegra20-emc.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra20-emc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dmitry Osipenko <digetx@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
12 - Thierry Reding <thierry.reding@gmail.com>
15 The External Memory Controller (EMC) interfaces with the off-chip SDRAM to
17 various performance-affecting settings beyond the obvious SDRAM configuration
23 const: nvidia,tegra20-emc
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| H A D | nvidia,tegra30-emc.yaml | 1 # SPDX-License-Identifier: (GPL-2.0)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra30-emc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dmitry Osipenko <digetx@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
12 - Thierry Reding <thierry.reding@gmail.com>
15 The EMC interfaces with the off-chip SDRAM to service the request stream
16 sent from Memory Controller. The EMC also has various performance-affecting
23 const: nvidia,tegra30-emc
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| /freebsd/share/doc/psd/05.sysman/ |
| H A D | 1.5.t | 140 or other device-specific events have occurred.
147 Options affecting I/O on a descriptor
161 non-blocking I/O mode and/or enable signaling when I/O is
166 Operations on non-blocking descriptors will
174 be signaled, with a SIGIO for input, output, or in-progress
179 using non-blocking output,
206 Protocols may be based on communications multiplexing or a rights-passing
209 locally generated ``read-ahead'' requests. A protocol that provides for
210 read-ahead may provide higher performance but have a more difficult
|
| /freebsd/share/man/man7/ |
| H A D | mitigations.7 | 1 .\"-
2 .\" SPDX-License-Identifer: BSD-2-Clause
42 Some of these mitigations have run-time controls to enable them on a global
43 or per-process basis, some are optionally enabled or disabled at compile time,
48 .Bl -bullet -compact
58 Relocation Read-Onl
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| H A D | tuning.7 | 30 .Nd performance tuning under FreeBSD
31 .Sh SYSTEM SETUP - DISKLABEL, NEWFS, TUNEFS, SWAP
63 partitions are read-mostly, with very little writing, while
68 heavily write-loaded partitions will not bleed over into the mostly-read
81 .Dq Li "tunefs -n enable /filesystem" .
82 Softupdates drastically improves meta-data performance, mainly file
100 There is no loss of performance since the root
103 A number of run-time
117 file systems normally update the last-accessed time of a file or
138 atime turned on for mostly read-only partitions such as
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| /freebsd/contrib/ntp/html/ |
| H A D | release.html | 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
4 <meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
14 <!-- #BeginDate format:En1m -->3-Oc
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| H A D | discipline.html | 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
4 <meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
7 <!-- Changed by: stenn, 03-Jan-2020 -->
13 <!-- #BeginDate format:En2m -->3-Jan-2020 02:12<!-- #EndDate -->
18 <li class="inline"><a href="#pll">Phase-Lock Loop Operations</a></li>
24 …-lock feedback loop. It is an intricately crafted algorithm that automatically adapts for optimum…
29 …ed update <em>V<sub>s</sub></em>. The loop filter implements a type-2 proportional-integrator con…
35 … not. It then quickly amortizes the residual offset at startup without affecting the oscillator f…
36 …-ms step has the same shape as at 64 s, but with amplitude compressed by one-tenth. The response …
43 …reference implementation first measures the oscillator frequency over a five-min interval. This g…
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| H A D | audio.html | 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
4 <meta http-equiv="content-type" content="text/html;charset=iso-8859-1">
11 <img src="pic/radio2.jpg" alt="jpg" align="left">ICOM R-72 shortwave receiver and Sure audio mixer
13 <!-- #BeginDate format:En2m -->11-Sep-2010 05:55<!-- #EndDate -->
31 and decoding techniques, including maximum-likelihood and soft-decision methods.
32 The documentation page for each driver contains an in-depth discussion on
33 the algorithms and performance expectations. In some cases the algorithms
38 …e flag 2</tt> command selects the microphone port if set to zero or the line-in port if set to one…
40 …l shortwave radio with the radio output - speaker or headphone jack - connected to either the micr…
41 …affecting the radio signal is the antenna. It need not be long - even 15 feet is enough if it is l…
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| /freebsd/share/doc/papers/sysperf/ |
| H A D | 4.t | 30 Performance Improvements
41 Performance Improvements in the Kernel
43 Our goal has been to optimize system performance
62 translating path names to inodes\u\s-21\s0\d\**.
64 \** \u\s-21\s0\d Inode is an abbreviation for ``Index node''.
78 To improve performance for processes doing directory scans,
101 cache we ran ``ls \-l''
103 Before the per-process cache this command
129 Table 9. Call times for \fInamei\fP with per-process cache.
133 The small performance improvement
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| H A D | 3.t | 33 the degradation in performance was significant.
49 contributor to the degradation in system performance.
51 on one machine, a VAX-11/780 with eight megabytes of memory.\**
58 person-to-person telephone messages to per-organization distribution
83 pseudo-terminal handler in addition to the local hardware terminal
113 Micro-operation benchmarks
117 programs was constructed and run on a VAX-11/750 with 4.5 megabytes
159 pipeself4 send 10,000 4-byte messages to yourself
160 pipeself512 send 10,000 512-byte messages to yourself
161 pipediscard4 send 10,000 4-byte messages to child who discards
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| /freebsd/sys/sys/ |
| H A D | socketvar.h | 1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
79 off_t max; /* maximum bytes to splice, or -1 */
95 /*-
122 u_short so_error; /* (f) error affecting connection */
123 u_short so_rerror; /* (f) error affecting connection */
135 * some user-specified metadata to a socket, which then can be
228 * They are now split into separate, lock-specific fields.
233 * Many fields will be read without locks to improve performance and avoid
239 #define SS_NBIO 0x0100 /* non-blocking ops */
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| /freebsd/sys/dev/iwm/ |
| H A D | if_iwm_pcie_trans.c | 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 /*-
21 * Based on BSD-licensed source modules in the Linux iwlwifi driver,
34 * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
55 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
60 * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
90 /*-
91 * Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr>
103 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
201 timeout -= 10; in iwm_poll_prph()
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| /freebsd/contrib/llvm-project/compiler-rt/lib/scudo/standalone/ |
| H A D | release.h | 1 //===-- release.h --------
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| /freebsd/crypto/openssl/crypto/camellia/ |
| H A D | camellia.c | 2 * Copyright 2006-2022 The OpenSSL Project Authors. All Rights Reserved.
31 * This release balances code size and performance. In particular key
35 * are unrolled, as full unroll gives only nominal performance boost,
39 * words reasonable performance even with not so modern compilers.
53 #define RightRotate(x, s) ( ((x) >> (s)) + ((x) << (32 - s)) )
54 #define LeftRotate(x, s) ( ((x) << (s)) + ((x) >> (32 - s)) )
59 /* S-box data */
275 * of bits are achieved by "rotating" order of s-elements and
276 * adjusting n accordingly, e.g. RotLeft128(s1,s2,s3,s0,n-32).
279 u32 _t0=_s0>>(32-_n);\
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| /freebsd/sys/contrib/openzfs/man/man7/ |
| H A D | zfsprops.7 | 1 .\" SPDX-License-Identifier: CDDL-1.0
10 .\" or https://opensource.org/licenses/CDDL-1.0.
35 .\" Copyright (c) 2014-2015, The FreeBSD Foundation, All Rights Reserved.
39 .\" Copyright (c) 2019, Kjeld Schouten-Lebbing
48 .Nd native and user-defined properties of ZFS datasets
51 Properties are divided into two types, native properties and user-defined
57 In addition, native properties are either editable or read-only.
71 The values of numeric properties can be specified using human-readable suffixes
88 The values of non-numeric properties are case sensitive and must be lowercase,
95 The following native properties consist of read-only statistics about the
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|
| /freebsd/contrib/unbound/doc/ |
| H A D | unbound-control.8.in | 1 .TH "unbound-control" "8" "Oct 17, 2024" "NLnet Labs" "unbound 1.22.0"
3 .\" unbound-control.8 -- unbound remote control manual
11 .B unbound\-control,
12 .B unbound\-control\-setup
13 \- Unbound remote server control utility.
15 .B unbound\-control
16 .RB [ \-hq ]
17 .RB [ \-c
19 .RB [ \-s
23 .B Unbound\-control
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| /freebsd/share/doc/smm/18.net/ |
| H A D | 6.t | 76 u_short so_error; /* error affecting connection */
90 be described in detail later. A pointer to a protocol-specific
125 #define SS_NBIO 0x100 /* non-blocking ops */
136 set with \fIfcntl\fP. ``Non-blocking'' I/O implies that
151 super-user. Only privileged sockets may
184 (assuming non-blocking I/O has not been specified).*
186 * The low-water mark is always presumed to be 0
205 Stream-oriented sockets queue data with no addresses, headers
210 Record-oriented sockets, including datagram sockets,
289 socket-visible characteristics, some of which are used in
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| /freebsd/sys/dev/qlnx/qlnxe/ |
| H A D | ecore_rdma_api.h | 2 * Copyright (c) 2018-2019 Cavium, Inc.
51 * The FW supports a CNQ of 64k-1 and this apparently causes an issue - notice
54 * of performance.
56 #define ECORE_RDMA_MAX_CNQ_SIZE (0xFFFF) /* 2^16 - 1 */
153 /* Abilty to support RNR-NAK generation */
270 /* global tunables affecting all QPs created after they are
764 * page-size and mtu in hwfn context
|
| /freebsd/sys/contrib/zstd/lib/common/ |
| H A D | xxhash.h | 2 * xxHash - Fast Hash algorithm
6 * - xxHash homepage: http://www.xxhash.com
7 * - xxHash source repository : https://github.com/Cyan4973/xxHash
9 * This source code is licensed under both the BSD-style license (found in the
12 * You may select, at your option, one of the above-listed licenses.
49 MD5-32 0.33 GB/s 10 Ronald L. Rivest
50 SHA1-32 0.28 GB/s 10
57 Other speed-oriented implementations can be faster,
59 https://fastcompression.blogspot.com/2019/03/presenting-xxh3.html?showComment=1552696407071#c349009…
61 A 64-bit version, named XXH64, is available since r35.
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| /freebsd/contrib/llvm-project/compiler-rt/lib/sanitizer_common/ |
| H A D | sanitizer_allocator_primary64.h | 1 //===-- sanitizer_allocator_primary64.h -------------------------*- C++ -*-===//
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
11 //===----------------------------------------------------------------------===//
18 // SizeClassAllocator64 -- allocator for 64-bit address space.
25 // At the beginning the entire space is mprotect-ed, then small parts of it
34 // FreeArray is an array free-d chunks (stored as 4-byte offsets)
73 released_bytes_ += to_page - from_page; in ReleasePageRangeToOS()
101 // as a 4-byte integer (offset from the region start shifted right by 4).
105 return static_cast<CompactPtrT>((ptr - base) >> kCompactPtrScale); in PointerToCompactPtr()
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| /freebsd/sys/dev/ath/ath_hal/ |
| H A D | ah_regdomain.c | 1 /*-
2 * SPDX-License-Identifier: ISC
4 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
5 * Copyright (c) 2005-2006 Atheros Communications, Inc.
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
82 * with shared properties - max tx power, max antenna gain, channel width,
96 * zones. It uses combinations of frequency ranges - represented in
97 * a bitmask - to determine the requirements and limitations needed.
135 return AH_PRIVATE(ah)->ah_currentRD &~ WORLDWIDE_ROAMING_FLAG; in getEepromRD()
247 return (regpair != AH_NULL) ? regpair->singleCC : CTRY_DEFAULT; in getDefaultCountry()
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|