info: 'TCP connection aborts. <b>baddata</b> (<code>TCPAbortOnData</code>) happens while the connection is on <code>FIN_WAIT1</code> and the kernel receives a packet with a sequence number beyond the last one for this connection - the kernel responds with <code>RST</code> (closes the connection). <b>userclosed</b> (<code>TCPAbortOnClose</code>) happens when the kernel receives data on an already closed connection and responds with <code>RST</code>. <b>nomemory</b> (<code>TCPAbortOnMemory</code> happens when there are too many orphaned sockets (not attached to an fd) and the kernel has to drop a connection - sometimes it will send an <code>RST</code>, sometimes it won\'t. <b>timeout</b> (<code>TCPAbortOnTimeout</code>) happens when a connection times out. <b>linger</b> (<code>TCPAbortOnLinger</code>) happens when the kernel killed a socket that was already closed by the application and lingered around for long enough. <b>failed</b> (<code>TCPAbortFailed</code>) happens when the kernel attempted to send an <code>RST</code> but failed because there was no memory available.'
var netdataDashboard = window.netdataDashboard || {};
// ----------------------------------------------------------------------------
// information about the main menus
netdataDashboard.menu = {
title: 'System Overview',
icon: '<i class="fas fa-bookmark"></i>',
info: 'Overview of the key system metrics.'
title: 'systemd Services',
icon: '<i class="fas fa-cogs"></i>',
info: 'Resources utilization of systemd services. netdata monitors all systemd services via cgroups (the resources accounting used by containers). '
icon: '<i class="fas fa-wifi"></i>',
info: 'Performance metrics for the access points (i.e. wireless interfaces in AP mode) found on the system.'
title: 'Quality of Service',
icon: '<i class="fas fa-globe"></i>',
info: 'Netdata collects and visualizes <code>tc</code> class utilization using its <a href="https://github.com/firehol/netdata/blob/master/plugins.d/tc-qos-helper.sh" target="_blank">tc-helper plugin</a>. If you also use <a href="http://firehol.org/#fireqos" target="_blank">FireQOS</a> for setting up QoS, netdata automatically collects interface and class names. If your QoS configuration includes overheads calculation, the values shown here will include these overheads (the total bandwidth for the same interface as reported in the Network Interfaces section, will be lower than the total bandwidth reported here). QoS data collection may have a slight time difference compared to the interface (QoS data collection uses a BASH script, so a shift in data collection of a few milliseconds should be justified).'
title: 'Network Interfaces',
icon: '<i class="fas fa-share-alt"></i>',
info: 'Performance metrics for network interfaces.'
title: 'IPv4 Networking',
icon: '<i class="fas fa-cloud"></i>',
info: 'Metrics for the IPv4 stack of the system. <a href="https://en.wikipedia.org/wiki/IPv4" target="_blank">Internet Protocol version 4 (IPv4)</a> is the fourth version of the Internet Protocol (IP). It is one of the core protocols of standards-based internetworking methods in the Internet. IPv4 is a connectionless protocol for use on packet-switched networks. It operates on a best effort delivery model, in that it does not guarantee delivery, nor does it assure proper sequencing or avoidance of duplicate delivery. These aspects, including data integrity, are addressed by an upper layer transport protocol, such as the Transmission Control Protocol (TCP).'