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/freebsd/share/doc/smm/05.fastfs/
H A D1.t45 The original UNIX system that runs on the PDP-11\(dg
63 When used on the VAX-11 together with other UNIX enhancements,
65 system is incapable of providing the data throughput rates
72 need to have a high throughput from the file system.
73 High throughput rates are also needed by programs
89 the underlying implementation to increase its throughput.
98 a large, high performance operating system [Feiertag71].
/freebsd/sys/contrib/dev/iwlwifi/fw/api/
H A Drs.h1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
3 * Copyright (C) 2012-2014, 2018-2022, 2024 Intel Corporation
12 * enum iwl_tlc_mng_cfg_flags - options for TLC config flags
36 * enum iwl_tlc_mng_cfg_cw - channel width options
52 * enum iwl_tlc_mng_cfg_chains - possibl
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/freebsd/contrib/sendmail/src/
H A DTUNING1 # Copyright (c) 2001-2003, 2014 Proofpoint, Inc. and its suppliers.
8 # $Id: TUNING,v 1.22 2013-11-22 20:51:54 ca Exp $
34 * Mailing Lists and Large Aliases (1-n Mailing)
35 * 1-1 Mass Mailing
36 * High Volume Mail
42 is non-trivial to combine low latency (fast delivery of incoming
43 mail) with high overall throughput.
50 -----------------------------------------------
58 disk is exceeded, which is true for almost every high-volume
70 -----------------------------------------------
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/freebsd/sys/dev/iwx/
H A Dif_iwx_debug.c1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
199 while(op->label != NULL) { in get_label()
200 if (op->opcode == opcode) in get_label()
201 return op->label; in get_label()
278 printf("(0) 0xa - 1 Mbps\n"); in print_ratenflags()
281 printf("(1) 0x14 - 2 Mbps\n"); in print_ratenflags()
284 printf("(2) 0x37 - 5.5 Mbps\n"); in print_ratenflags()
287 printf("(3) 0x6e - 11 nbps\n"); in print_ratenflags()
322 printf("\t(2) High-throughput (HT)\n"); in print_ratenflags()
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/freebsd/share/doc/papers/diskperf/
H A Dabs.ms58 the National Science Foundation under grant MCS80-05144,
61 Contract No. N00039-82-C-0235.
64 throughput for various I/O operations using the most attractive currently
73 Many of the results of the tests were initially counter-intuitive
79 disk drives on each of two foreign-vendor disk controllers
80 and two DEC RA-81 disk drives on a DEC UDA-50 disk controller.
81 The foreign-vendor controllers were Emulex SC750, SC780
83 The DEC UDA-50 controller is a UNIBUS interfaced, heavily buffered
89 with an RH750/RH780 type interface and having high burst transfer
94 arbitration scheme to produce another increase in throughput.
/freebsd/sys/dev/bhnd/
H A Dbhnd_types.h1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
118 * Idle Low-Power (ILP).
126 * Active Low-Power (ALP).
128 * Low-latency register access and low-rate DMA.
133 * High Throughput (HT).
135 * High bus throughput and lowest-latency register access.
176 * @note While the interconnect may support 64-bit addressing, not
H A Dbhndreg.h1 /*-
2 * SPDX-License-Identifier: ISC
4 * Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
10 * sbchipc.h distributed with the Asus RT-N16 firmware source code release.
46 * Common per-core clock control/status register available on PMU-equipped
50 * High Throughput (HT) Full bandwidth, low latency. Generally supplied
70 #define BHND_CCS_ERSRC_MAX 2 /**< maximum ERSRC value (corresponding to bits 0-2) */
/freebsd/share/man/man4/
H A Diflib.428 .Bl -tag -width indent
56 Disables MSI-X interrupts for the device.
65 When set to a non-zero value, TX queues are assigned to cores following the
84 .Bl -tag -width indent
92 This results in higher transmit throughput.
93 If set to a non-zero value, task returns immediately and the transmit
95 This returns control to the caller faster and under high receive load,
104 .Bl -tag -width indent
106 If this is set to a non-zero value, iflib will avoid any attempt to combine
109 This will lower the maximum throughput, but will also lower transmit latency.
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H A Dcc_htcp.43 .\" Copyright (c) 2010-2011 The FreeBSD Foundation
36 .Nd H-TCP Congestion Control Algorithm
38 The H-TCP congestion control algorithm was designed to provide increased
39 throughput in fast and long-distance networks.
46 congestion event, and then switches to a high-speed mode based on a quadratic
49 The implementation was done in a clean-room fashion, and is based on the
59 .Bl -tag -width ".Va adaptive_backoff"
62 network queues non-empty during congestion recovery episodes.
83 .%T "H-TCP: TCP Congestion Control for High Bandwidth-Delay Product Paths"
84 .%U "https://tools.ietf.org/id/draft-leith-tcp-htcp-06.txt"
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H A Dsched_4bsd.437 is the traditional system scheduler, providing both high throughput and solid
42 .Bl -tag -width indent
44 This read-only sysctl reports the name of the active scheduler.
46 This read-write sysctl reports or sets the length of the quantum (in
47 micro-seconds) granted to a thread.
49 This read-write sysctl sets whether or not the scheduler will generate an
50 inter-processor interrupt (IPI) to an idle CPU when a thread is woken up.
54 This read-only sysctl reports whether or not the kernel is configured to
69 While a highly robust and time-tested scheduler,
71 lacks specific knowledge of how to schedule advantageously in non-symmetric
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H A Dcc_cubic.43 .\" Copyright (c) 2010-2011 The FreeBSD Foundation
39 throughput in fast and long-distance networks.
57 The implementation was done in a clean-room fashion, and is based on the
78 .%T "CUBIC for Fast Long-Distance Networks"
79 .%U "https://tools.ietf.org/id/draft-rhee-tcpm-cubic-02.txt"
85 .%T "CUBIC: a new TCP-friendly high-speed TCP variant"
90 .%P "64-74"
114 .An -nosplit
H A Diavf.41 .\"-
2 .\" SPDX-License-Identifier: BSD-3-Clause
4 .\" Copyright (c) 2013-2018, Intel Corporation
44 .Bd -ragged -offset indent
51 .Bd -literal -offset indent
62 .Bl -bullet -compact
64 Intel\(rg Ethernet Controller E810\-C
66 Intel\(rg Ethernet Controller E810\-XXV
68 Intel\(rg Ethernet Connection E822\-C
70 Intel\(rg Ethernet Connection E822\-L
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H A Dtcp_bbr.430 .Nd TCP Bottleneck Bandwidth and Round-Trip Time Algorithm
34 .Bd -literal -offset indent
40 .Bd -literal -offset indent
44 Bottleneck bandwidth and round-trip time (BBR) is a congestion control algorithm which
45 seeks high throughput with a small queue by probing BW and RTT.
46 It is a round-up redesign of congestion control, which is not loss-based, delay-based,
47 ECN-based or AIMD-based.
57 .Bl -tag -width ".Va exp_backoff_scale"
80 .Bl -tag -width ".Va exp_backoff_scale"
88 Total number of enobufs for non-hardware paced flows.
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/freebsd/sys/contrib/device-tree/src/arm/broadcom/
H A Dbcm2711-rpi-cm4.dtsi1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include "bcm2711-rpi.dtsi"
5 #include "bcm283x-rpi-wifi-bt.dtsi"
8 compatible = "raspberrypi,4-compute-module", "brcm,bcm2711";
12 stdout-path = "serial1:115200n8";
15 sd_io_1v8_reg: regulator-sd-io-1v8 {
16 compatible = "regulator-gpio";
17 regulator-name = "vdd-sd-io";
18 regulator-min-microvolt = <1800000>;
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/freebsd/usr.bin/clang/llvm-mca/
H A Dllvm-mca.14 .nr rst2man-indent-level 0
7 \\$1 \\n[an-margin]
8 level \\n[rst2man-indent-level]
9 level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
10 -
11 \\n[rst2man-indent0]
12 \\n[rst2man-indent1]
13 \\n[rst2man-indent2]
18 . nr rst2man-indent\\n[rst2man-indent-level] \\n[an-margin]
19 . nr rst2man-indent-level +1
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/freebsd/lib/libpmc/pmu-events/arch/x86/jaketown/
H A Djkt-metrics.json7-lines are fetched from the memory subsystem; parsed into instructions; and lastly decoded into mi…
14-lines are fetched from the memory subsystem; parsed into instructions; and lastly decoded into mi…
18 …"MetricExpr": "( UOPS_ISSUED.ANY - UOPS_RETIRED.RETIRE_SLOTS + 4 * INT_MISC.RECOVERY_CYCLES ) / (4…
21 …s for which the issue-pipeline was blocked due to recovery from earlier incorrect speculation. For…
25 …"MetricExpr": "( UOPS_ISSUED.ANY - UOPS_RETIRED.RETIRE_SLOTS + 4 * ( INT_MISC.RECOVERY_CYCLES_ANY …
28 …s for which the issue-pipeline was blocked due to recovery from earlier incorrect speculation. For…
33 …"MetricExpr": "1 - ( (IDQ_UOPS_NOT_DELIVERED.CORE / (4 * CPU_CLK_UNHALTED.THREAD)) + (( UOPS_ISSUE…
36-of-order scheduler dispatches ready uops into their respective execution units; and once complete…
40- ( (IDQ_UOPS_NOT_DELIVERED.CORE / (4 * ( ( CPU_CLK_UNHALTED.THREAD / 2 ) * ( 1 + CPU_CLK_UNHALTED…
43-of-order scheduler dispatches ready uops into their respective execution units; and once complete…
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/freebsd/sys/contrib/device-tree/Bindings/spi/
H A Dspi-peripheral-props.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/spi/spi-peripheral-props.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Peripheral-specific properties for a SPI bus.
11 be common properties like spi-max-frequency, spi-cpha, etc. or they could be
13 need to be defined in the peripheral node because they are per-peripheral and
19 - Mark Brown <broonie@kernel.org>
27 - minimum: 0
32 spi-cs-high:
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/freebsd/lib/libpmc/pmu-events/arch/x86/sandybridge/
H A Dsnb-metrics.json7-lines are fetched from the memory subsystem; parsed into instructions; and lastly decoded into mi…
14-lines are fetched from the memory subsystem; parsed into instructions; and lastly decoded into mi…
18 …"MetricExpr": "( UOPS_ISSUED.ANY - UOPS_RETIRED.RETIRE_SLOTS + 4 * INT_MISC.RECOVERY_CYCLES ) / (4…
21 …s for which the issue-pipeline was blocked due to recovery from earlier incorrect speculation. For…
25 …"MetricExpr": "( UOPS_ISSUED.ANY - UOPS_RETIRED.RETIRE_SLOTS + 4 * ( INT_MISC.RECOVERY_CYCLES_ANY …
28 …s for which the issue-pipeline was blocked due to recovery from earlier incorrect speculation. For…
33 …"MetricExpr": "1 - ( (IDQ_UOPS_NOT_DELIVERED.CORE / (4 * CPU_CLK_UNHALTED.THREAD)) + (( UOPS_ISSUE…
36-of-order scheduler dispatches ready uops into their respective execution units; and once complete…
40- ( (IDQ_UOPS_NOT_DELIVERED.CORE / (4 * ( ( CPU_CLK_UNHALTED.THREAD / 2 ) * ( 1 + CPU_CLK_UNHALTED…
43-of-order scheduler dispatches ready uops into their respective execution units; and once complete…
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/freebsd/sys/contrib/device-tree/Bindings/misc/
H A Dxlnx,sd-fec.txt4 which provides high-throughput LDPC and Turbo Code implementations.
6 customer specified Quasi-cyclic (QC) codes. The Turbo decode functionality
12 - compatible: Must be "xlnx,sd-fec-1.1"
13 - clock-names : List of input clock names from the following:
14 - "core_clk", Main processing clock for processing core (required)
15 - "s_axi_aclk", AXI4-Lite memory-mapped slave interface clock (required)
16 - "s_axis_din_aclk", DIN AXI4-Stream Slave interface clock (optional)
17 - "s_axis_din_words-aclk", DIN_WORDS AXI4-Stream Slave interface clock (optional)
18 - "s_axis_ctrl_aclk", Control input AXI4-Stream Slave interface clock (optional)
19 - "m_axis_dout_aclk", DOUT AXI4-Stream Master interface clock (optional)
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H A Dxlnx,sd-fec.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/misc/xlnx,sd-fec.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Cvetic, Dragan <dragan.cvetic@amd.com>
11 - Erim, Salih <salih.erim@amd.com>
15 which provides high-throughput LDPC and Turbo Code implementations.
17 customer specified Quasi-cyclic (QC) codes. The Turbo decode functionality
23 const: xlnx,sd-fec-1.1
33 - description: Main processing clock for processing core
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/freebsd/share/doc/papers/newvm/
H A D0.t63 One use of shared memory is to provide a high-speed
64 Inter-Process Communication (IPC) mechanism between two or more
69 the use of system calls reduces the throughput of the shared memory
72 machines that have a test-and-set instruction can handle the usual
74 the unusual case of trying to lock an already-locked lock or in
76 interface will allow a user-level implementation of the System V
/freebsd/sys/dev/e1000/
H A Dif_em.h1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2001-2024, Intel Corporation
104 * Valid Range: 80-256 for 82542 and 82543-based adapters
105 * 80-4096 for others
121 * EM_MAX_RXD - Maximum number of receive Descriptors
122 * Valid Range: 80-256 for 82542 and 82543-based adapters
123 * 80-4096 for others
140 * EM_TIDV - Transmit Interrupt Delay Value
141 * Valid Range: 0-65535 (0=off)
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/freebsd/lib/libpmc/pmu-events/arch/x86/ivybridge/
H A Divb-metrics.json7-lines are fetched from the memory subsystem; parsed into instructions; and lastly decoded into mi…
14-lines are fetched from the memory subsystem; parsed into instructions; and lastly decoded into mi…
18 …"MetricExpr": "( UOPS_ISSUED.ANY - UOPS_RETIRED.RETIRE_SLOTS + 4 * INT_MISC.RECOVERY_CYCLES ) / (4…
21 …s for which the issue-pipeline was blocked due to recovery from earlier incorrect speculation. For…
25 …"MetricExpr": "( UOPS_ISSUED.ANY - UOPS_RETIRED.RETIRE_SLOTS + 4 * ( INT_MISC.RECOVERY_CYCLES_ANY …
28 …s for which the issue-pipeline was blocked due to recovery from earlier incorrect speculation. For…
33 …"MetricExpr": "1 - ( (IDQ_UOPS_NOT_DELIVERED.CORE / (4 * CPU_CLK_UNHALTED.THREAD)) + (( UOPS_ISSUE…
36-of-order scheduler dispatches ready uops into their respective execution units; and once complete…
40- ( (IDQ_UOPS_NOT_DELIVERED.CORE / (4 * ( ( CPU_CLK_UNHALTED.THREAD / 2 ) * ( 1 + CPU_CLK_UNHALTED…
43-of-order scheduler dispatches ready uops into their respective execution units; and once complete…
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/freebsd/lib/libpmc/pmu-events/arch/x86/ivytown/
H A Divt-metrics.json7-lines are fetched from the memory subsystem; parsed into instructions; and lastly decoded into mi…
14-lines are fetched from the memory subsystem; parsed into instructions; and lastly decoded into mi…
18 …"MetricExpr": "( UOPS_ISSUED.ANY - UOPS_RETIRED.RETIRE_SLOTS + 4 * INT_MISC.RECOVERY_CYCLES ) / (4…
21 …s for which the issue-pipeline was blocked due to recovery from earlier incorrect speculation. For…
25 …"MetricExpr": "( UOPS_ISSUED.ANY - UOPS_RETIRED.RETIRE_SLOTS + 4 * ( INT_MISC.RECOVERY_CYCLES_ANY …
28 …s for which the issue-pipeline was blocked due to recovery from earlier incorrect speculation. For…
33 …"MetricExpr": "1 - ( (IDQ_UOPS_NOT_DELIVERED.CORE / (4 * CPU_CLK_UNHALTED.THREAD)) + (( UOPS_ISSUE…
36-of-order scheduler dispatches ready uops into their respective execution units; and once complete…
40- ( (IDQ_UOPS_NOT_DELIVERED.CORE / (4 * ( ( CPU_CLK_UNHALTED.THREAD / 2 ) * ( 1 + CPU_CLK_UNHALTED…
43-of-order scheduler dispatches ready uops into their respective execution units; and once complete…
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/freebsd/usr.bin/systat/
H A Dsystat.137 .Op Ar display-commands
38 .Op Ar refresh-interval
73 input line is passed to a per-display command interpreter.
75 allows each display to have certain display-specific commands.
78 .Bl -tag -width "refresh_interval"
104 .It Ar refresh-interval
106 .Ar refresh-value
109 .It Ar display-commands
116 .Fl -
125 .Dl Nm Fl iostat Fl numbers Fl - Ar 2.1
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