sysctl is a software mechanism in some Unix-like operating systems that reads and modifies the attributes of the system kernel such as its version number...
9 KB (932 words) - 21:49, 20 April 2024
used for their configuration. sysfs provides functionality similar to the sysctl mechanism found in BSD operating systems, with the difference that sysfs...
6 KB (600 words) - 16:24, 28 July 2023
include the line "net.ipv4.tcp_window_scaling=0" in /etc/sysctl.conf (or /etc/sysctl.d/99-sysctl.conf as of systemd 207). Default setting for FreeBSD, OpenBSD...
6 KB (901 words) - 15:15, 7 November 2024
4BSD-derived sysctls are key/value mappings managed by the sysctl program, which lists all variables with sysctl -a, the value of one variable with sysctl net...
18 KB (2,071 words) - 01:56, 19 December 2024
compile-time option in the kernel configuration, CONFIG_MAGIC_SYSRQ, and a sysctl kernel parameter, kernel.sysrq. On newer kernels (since 2.6.12), it is possible...
17 KB (1,413 words) - 13:03, 3 January 2025
Uptime (section Using sysctl)
SYSTAT program. There is also a method of using sysctl to call the system's last boot time: $ sysctl kern.boottime kern.boottime: { sec = 1271934886,...
15 KB (1,432 words) - 17:18, 15 August 2024
Ioctl (section sysctl alternative)
According to an OpenBSD developer, ioctl and sysctl are the two system calls for extending the kernel, with sysctl possibly being the simpler of the two. In...
21 KB (2,700 words) - 01:21, 26 December 2024
activated through the sysctl interface by setting 1 as value for the sysctl net.inet.tcp.ecn.enable parameter. Likewise, the sysctl net.inet.tcp.ecn can...
23 KB (2,825 words) - 19:15, 22 September 2024
pages shared between processes, or the use of transparent huge pages; new sysctl settings allow NUMA balancing to be enabled or disabled, as well as the...
16 KB (1,671 words) - 16:24, 8 August 2024
Ports, ... 49152-65535 (never assigned) Microsoft KB Article 929851 "IP Sysctl". The Linux Kernel documentation. Retrieved 2021-06-27. The default values...
6 KB (539 words) - 08:26, 10 April 2024
this description and value can be checked by the command sysctl: sysctl -d net.inet.tcp.msl sysctl net.inet.tcp.msl which gets the result: net.inet.tcp.msl:...
2 KB (242 words) - 22:39, 8 February 2023
information about the kernel and to change certain kernel parameters at runtime (sysctl). Many Unix-like operating systems support the proc filesystem, including...
17 KB (2,134 words) - 14:44, 9 August 2024
attacker to hide the break-in. Linux allows disabling module loading via sysctl option /proc/sys/kernel/modules_disabled. An initramfs system may load specific...
15 KB (1,720 words) - 20:17, 6 December 2024
replaced by a sysctl(8)", "should one be developed"; it can be noted that in 2003 this was the exact approach taken by OpenBSD with sysctl hw.sensors when...
10 KB (860 words) - 10:03, 28 April 2022
added in 2010. It is off by default, and can be enabled by setting the sysctl vm.randomize_mmap to 1. Support for ASLR appeared in FreeBSD 13.0. It is...
38 KB (4,353 words) - 00:04, 1 January 2025
sensors framework with the nmea(4) pseudo-device driver OpenNTPD through sysctl hw.sensors § timedelta API Rand McNally StreetFinder ObserVIEW QGIS A sample...
13 KB (1,236 words) - 10:34, 7 November 2024
typically mounted at /sys/kernel/config (or more rarely at /config). tmpfs sysctl – an interface for examining and dynamically changing parameters in the...
1 KB (107 words) - 22:24, 21 July 2016
for AMD-V is "svm". This may be checked in BSD derivatives via dmesg or sysctl and in Linux via /proc/cpuinfo. Instructions in AMD-V include VMRUN, VMLOAD...
41 KB (3,711 words) - 19:52, 2 September 2024
the Windows registry turns off delayed ACK by default. On FreeBSD, the sysctl entry net.inet.tcp.delayed_ack controls the default behavior. No such switch...
10 KB (1,274 words) - 08:45, 12 August 2024
September 2020. "The Sysctl Interface". Linux.it. Archived from the original on 17 February 2020. Retrieved 13 September 2020. "sysctl(8) - Linux manual...
191 KB (17,921 words) - 18:10, 29 December 2024
include a constant rate TSC (identified by the kern.timecounter.invariant_tsc sysctl on FreeBSD or by the "constant_tsc" flag in Linux's /proc/cpuinfo). With...
11 KB (1,248 words) - 21:48, 13 November 2024
since 1999/2000. In 2003, it served as the inspiration behind the OpenBSD's sysctl hw.sensors framework when some NetBSD drivers were being ported to OpenBSD...
55 KB (4,293 words) - 17:30, 6 January 2025
fix is to set hw.acpi.cpu.cx_lowest=C1 and dev.cpu.<n>.lowest via /etc/sysctl.conf. 14 nm Airmont architecture processors are also affected by the design...
34 KB (1,608 words) - 18:17, 4 December 2024
ALTQ Bluetooth BPF CARP ipfw NDIS netgraph PF Subsystems busdma DPorts ioctl kqueue moused OpenPAM sysctl hw.sensors systat SMBus People Matthew Dillon...
36 KB (2,683 words) - 22:44, 8 November 2024
kernel-level hardware sensors framework originating from OpenBSD, which uses the sysctl kernel interface as the transport layer between the kernel and the userland...
11 KB (1,014 words) - 19:47, 26 August 2024
2007 progressive rock album Sensors (journal), a Swiss open access journal sysctl hw.sensors, an OpenBSD framework for hardware monitoring sensors lm_sensors...
759 bytes (127 words) - 15:06, 15 September 2020
Archived from the original on 2020-03-31. Retrieved 2016-07-21. RFC 3522. "IP sysctl". Linux Kernel Documentation. Archived from the original on 5 March 2016...
109 KB (12,957 words) - 17:34, 19 December 2024
ALTQ Bluetooth BPF CARP ipfw NDIS netgraph PF Subsystems busdma DPorts ioctl kqueue moused OpenPAM sysctl hw.sensors systat SMBus People Matthew Dillon...
11 KB (887 words) - 08:26, 12 June 2024
system detection. Address space layout randomization (ASLR) by default Basic sysctl hw.sensors API introduced for hardware monitoring. Old version, no longer...
106 KB (7,337 words) - 15:26, 20 November 2024
software like SpeedFan on Windows, lm_sensors on Linux, envstat on NetBSD, and sysctl hw.sensors on OpenBSD and DragonFly can interface with these chips to relay...
11 KB (1,136 words) - 12:27, 29 November 2024