| /freebsd/sys/contrib/device-tree/Bindings/bus/ |
| H A D | aspeed,ast2600-ahbc.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/bus/aspeed,ast2600-ahbc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ASPEED Advanced High-Performance Bus Controller (AHBC)
10 - Neal Liu <neal_liu@aspeedtech.com>
11 - Chia-Wei Wang <chiawei_wang@aspeedtech.com>
14 Advanced High-performance Bus Controller (AHBC) supports plenty of mechanisms
16 to control the overall operations of Advanced High-performance Bus (AHB).
21 - aspeed,ast2600-ahbc
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| /freebsd/libexec/rc/rc.d/ |
| H A D | power_profile | 6 # Arguments: 0x00 (AC offline, economy) or 0x01 (AC online, performance)
19 LOGGER="logger -t power_profile -p daemon.notice"
25 # $value: HIGH for the highest performance value, LOW for the best
27 # $highest_value: maximum value for this sysctl, when $value is "HIGH"
33 if [ -z "$(sysctl -n ${node} 2> /dev/null)" ]; then
37 # Get the new value, checking for special types HIGH or LOW
53 if [ -n "${value}" ]; then
60 if [ $# -ne 1 ]; then
68 # Find the next state (performance or economy).
72 ${LOGGER} "changed to 'performance'"
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| /freebsd/contrib/jemalloc/ |
| H A D | TUNING.md | 1 This document summarizes the common approaches for performance fine tuning with
8 by a few percent, or make favorable trade-offs.
11 ## Notable runtime options for performance tuning
42 operating system, and therefore provides a fairly straightforward trade-off
47 Suggested: tune the values based on the desired trade-offs.
52 However high arena count may also increase overall memory fragmentation,
53 since arenas manage memory independently. When high degree of parallelism
71 * High resource consumption application, prioritizing CPU utilization:
77 * High resource consumption application, prioritizing memory usage:
90 * Extremely conservative -- minimize memory usage at all costs, only suitable when
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| /freebsd/contrib/sendmail/src/ |
| H A D | TUNING | 1 # Copyright (c) 2001-2003, 2014 Proofpoint, Inc. and its suppliers.
8 # $Id: TUNING,v 1.22 2013-11-22 20:51:54 ca Exp $
17 required performance, there are several configuration options that
18 can be changed to accomplish higher performance. However, before
20 performance is not as good as desired. This may also involve hardware
24 the scope of this guide. In almost all other cases performance will
34 * Mailing Lists and Large Aliases (1-n Mailing)
35 * 1-1 Mass Mailing
36 * High Volume Mail
40 to configure sendmail to achieve good performance in all cases, but
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| /illumos-gate/usr/src/lib/scsi/libscsi/common/ |
| H A D | scsi_status.c | 100 { 0x04, 0x09, "LUN not ready, self-test in progress" },
110 { 0x08, 0x01, "LUN communication time-out" },
112 { 0x08, 0x03, "LUN communication crc error (ultra-DMA/32)" },
121 { 0x0b, 0x01, "warning - specified temperature exceeded" },
122 { 0x0b, 0x02, "warning - enclosure degraded" },
124 { 0x0c, 0x01, "write error - recovered with auto reallocation" },
125 { 0x0c, 0x02, "write error - auto reallocation failed" },
126 { 0x0c, 0x03, "write error - recommend reassignment" },
130 { 0x0c, 0x07, "write error - recovery needed" },
131 { 0x0c, 0x08, "write error - recovery failed" },
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| /freebsd/share/man/man7/ |
| 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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| /illumos-gate/usr/src/uts/i86pc/os/cpupm/ |
| H A D | cpupm_amd.c | 29 * AMD-specific CPU power management support.
36 * In the early 2000s, AMD shipped a feature called PowerNow! in the K6 era -
37 * K6-2E+ and K6-III+ cores, according to "AMD PowerNow! Technology Dynamically
38 * Manages Power and Performance", publication number 24404A. This feature
39 * allowed operating systems to control power and performance settings in a way
40 * that is very similar to ACPI P-states. That is, selectable core voltage and
41 * frequency levels, with default "power-saver" and "high-performance" modes
42 * that are reflective of Pmin and Pmax on a 2024-era AMD processor.
54 * * introduces the notion of power-governed turbo boost
56 * Somewhere in the K10 era, AMD also introduced C-state support, allowing cores
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| /freebsd/share/doc/smm/05.fastfs/ |
| H A D | 1.t | 45 The original UNIX system that runs on the PDP-11\(dg
63 When used on the VAX-11 together with other UNIX enhancements,
72 need to have a high throughput from the file system.
73 High throughput rates are also needed by programs
85 its performance.
93 Problems with file system performance have been dealt with
95 Previous work to improve the UNIX file system performance has been
98 a large, high performance operating system [Feiertag71].
|
| /freebsd/sys/contrib/openzfs/man/man7/ |
| H A D | zpool-features.7 | 1 .\" SPDX-License-Identifier: CDDL-1.0
9 .\" usr/src/OPENSOLARIS.LICENSE or https://opensource.org/licenses/CDDL-1.0.
27 .Nm zpool-features
31 ZFS pool on-disk format versions are specified via
33 which replace the old on-disk format numbers
34 .Pq the last supported on-disk format number is 28 .
38 .Sy feature Ns @ Ns Ar feature-name
48 Since most features can be enabled independently of each other, the on-disk
57 .Ar com.example : Ns Ar feature-name .
71 .Ar com.example : Ns Ar feature-name
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| /illumos-gate/usr/src/man/man7/ |
| H A D | zpool-features.7 | 25 .Nm zpool-features
29 ZFS pool on-disk format versions are specified via
31 which replace the old on-disk format numbers
32 .Pq the last supported on-disk format number is 28 .
36 .Sy feature Ns @ Ns Ar feature-name
43 Since most features can be enabled independently of each other, the on-disk
52 .Ar com.example : Ns Ar feature-name .
65 .Ar com.example : Ns Ar feature-name
67 .Ar feature-name
74 .Bl -tag -width "disabled"
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| /freebsd/sys/contrib/device-tree/Bindings/sound/ |
| H A D | cirrus,cs4234.yaml | 1 # SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - patches@opensource.cirrus.com
14 high performance analog to digital conversion, 4 channels of high
15 performance digital to analog conversion for audio, and 1 channel of
19 standard audio grade DAC, with performance specifications identical
22 provide lead time for the external switch-mode power supply, and a
24 low-latency path to the outputs.
29 - cirrus,cs4234
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| H A D | cirrus,cs530x.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Paul Handrigan <paulha@opensource.cirrus.com>
11 - patches@opensource.cirrus.com
14 The CS530X devices are a family of high performance audio ADCs.
17 - $ref: dai-common.yaml#
22 - cirrus,cs5302
23 - cirrus,cs5304
24 - cirrus,cs5308
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| /illumos-gate/usr/src/man/man4d/ |
| H A D | hubd.4d | 8 hubd \- USB hub driver
12 \fBhub@unit-address\fR
19 3.0\fR. The \fBhubd\fR driver supports bus-powered and self-powered hubs. The
26 multi-configuration devices, \fBhubd\fR sets the preferred configuration (refer
37 32- bit x86 ELF kernel module
46 64- bit x86 ELF kernel module
55 64-bit SPARC ELF kernel module
70 Architecture SPARC, x86, PCI-based systems
114 hub. If enumeration fails, disconnect and re-connect.
120 \fBUse of a USB 1.0 hub behind a high speed port may cause unexpected
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| /freebsd/share/man/man4/ |
| H A D | mlx4en.4 | 30 .Nd "Mellanox ConnectX-3 10GbE/40GbE network adapter driver"
34 .Bd -ragged -offset indent
40 To load the driver as a module at run-time,
42 .Bd -literal -offset indent
49 .Bd -literal -offset indent
55 solution for Enterprise Data Centers, High-Performance Computing, and
58 services and high-performance embedded I/O applications will achieve
59 significant performance improvements resulting in reduced completion
66 .Bl -bullet -compact
68 Mellanox ConnectX-2 (ETH)
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|
| H A D | mlx4ib.4 | 30 .Nd "Mellanox ConnectX-3 10GbE/40GbE network adapter driver"
34 .Bd -ragged -offset indent
40 To load the driver as a module at run-time,
42 .Bd -literal -offset indent
49 .Bd -literal -offset indent
55 solution for Enterprise Data Centers, High-Performance Computing, and
58 services and high-performance embedded I/O applications will achieve
59 significant performance improvements resulting in reduced completion
66 .Bl -bullet -compact
68 Mellanox ConnectX-2 (IB)
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| H A D | hv_vmbus.4 | 31 .Nd Hyper-V Virtual Machine Bus (VMBus) Driver
35 .Bd -ragged -offset indent
42 provides a high performance communication interface between
43 guest and root partitions in Hyper-V.
44 Hyper-V is a hypervisor-based virtualization technology from Microsoft.
45 Hyper-V supports isolation in terms of a partition.
64 The VMBus is a logical inter-partition communication channel.
71 The Hyper-V VMBus driver defines and implements
72 the interface that facilitate high performance bi-directional communication
87 .An -nosplit
|
| /freebsd/lib/libc/stdlib/ |
| H A D | rand.3 | 51 .Bf -symbolic
61 function computes a sequence of pseudo-random integers in the range
85 is implemented using the same 128-byte state LFSR generator algorithm as
93 implements the historical, poor-quality Park-Miller 32-bit LCG and should not
101 so the low-order bits should no longer be significantly worse than the
102 high-order bits.
114 .St -isoC .
119 .St -isoC
121 .St -p1003.1-2008 .
127 used the historical Park-Miller generator with 32 bits of state and produced
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| /freebsd/share/doc/papers/sysperf/ |
| H A D | 2.t | 32 There are many tools available for monitoring the performance
54 out at 25-35 tps in practice), and the user cpu utilization (us) should
55 be high (above 50%).
60 be non-zero). It is healthy for the paging demon to free pages when
70 is overloaded or imbalanced. If you have several non-dma
72 that are doing high-speed non-buffered input/output, then the system
73 time may go high (60-80% or higher).
74 It is often possible to pin down the cause of high system time by
118 non-zero average seek times. Most modern disk drives should
119 exhibit an average seek time of 25-35 ms.
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| 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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| /freebsd/sys/x86/cpufreq/ |
| H A D | hwpstate_intel.c | 1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
96 uint8_t high; member
114 "Set 1 (default) to enable package-level control, 0 to disable");
127 dev = sc->dev; in intel_hwp_dump_sysctl_handler()
136 sched_bind(curthread, pc->pc_cpuid); in intel_hwp_dump_sysctl_handler()
140 sbuf_printf(sb, "CPU%d: HWP %sabled\n", pc->pc_cpuid, in intel_hwp_dump_sysctl_handler()
149 sbuf_printf(sb, "\tHighest Performance: %03ju\n", data & 0xff); in intel_hwp_dump_sysctl_handler()
150 sbuf_printf(sb, "\tGuaranteed Performance: %03ju\n", (data >> 8) & 0xff); in intel_hwp_dump_sysctl_handler()
151 sbuf_printf(sb, "\tEfficient Performance: %03ju\n", (data >> 16) & 0xff); in intel_hwp_dump_sysctl_handler()
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| /freebsd/sys/contrib/device-tree/Bindings/regulator/ |
| H A D | richtek,rt5759-regulator.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rt5759-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Richtek RT5759 High Performance DCDC Converter
10 - ChiYuan Huang <cy_huang@richtek.com>
13 The RT5759 is a high-performance, synchronous step-down DC-DC converter that
15 voltage can be programmable with I2C controlled 7-Bit VID.
18 https://www.richtek.com/assets/product_file/RT5759/DS5759-00.pdf
23 - richtek,rt5759
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| H A D | renesas,raa215300.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Biju Das <biju.das.jz@bp.renesas.com>
13 The RAA215300 is a high-performance, low-cost 9-channel PMIC designed for
14 32-bit and 64-bit MCU and MPU applications. It supports DDR3, DDR3L, DDR4,
16 built-in Real-Time Clock (RTC), 32kHz crystal oscillator, and coin cell
18 ideal for System-On-Module (SOM) applications. A spread spectrum feature
19 provides an ease-of-use solution for noise-sensitive audio or RF applications.
25 …-power-management/multi-channel-power-management-ics-pmics/ssdsoc-power-management-ics-pmic-and-pm…
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| H A D | microchip,mcp16502.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: MCP16502 - High-Performance PMIC
10 - Andrei Simion <andrei.simion@microchip.com>
16 of High-Performance mode (HPM).
22 lpm-gpios:
25 Note that this GPIO must remain high during
26 suspend-to-ram, keeping the PMIC into HIBERNATE mode.
31 lvin-supply:
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| /freebsd/crypto/openssl/doc/designs/ddd/ |
| H A D | WINDOWS.md | 1 Windows-related issues
16 structure which embeds a fixed-length array of socket handles. This is necessary
21 Neither select() nor poll() are, of course, high performance polling options.
22 Windows does not provide anything like epoll or kqueue. For high performance
27 is that IOCPs are a higher-level interface; it is easy to build an IOCP-like
29 polling-like interface on top of IOCPs.
34 just to write a poll-based implementation of an I/O reactor and an IOCP-based
41 actually more similar to a high-level asynchronous I/O library such as libuv or
46 - ddd-01-conn-blocking: Blocking example, use of IOCP is not applicable.
48 - ddd-02-conn-nonblocking: Socket is managed by OpenSSL, and IOCP is not
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| /illumos-gate/usr/src/lib/fm/libdiskstatus/common/ |
| H A D | ds_scsi_uscsi.c | 69 for (; slist->str != NULL; slist++) { in find_string()
70 if (slist->value == match_value) { in find_string()
71 return (slist->str); in find_string()
168 { 0x04, 0x09, "LUN not ready, self-test in progress" },
178 { 0x08, 0x01, "LUN communication time-out" },
180 { 0x08, 0x03, "LUN communication crc error (ultra-DMA/32)" },
189 { 0x0b, 0x01, "warning - specified temperature exceeded" },
190 { 0x0b, 0x02, "warning - enclosure degraded" },
192 { 0x0c, 0x01, "write error - recovered with auto reallocation" },
193 { 0x0c, 0x02, "write error - auto reallocation failed" },
[all …]
|