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Property:latencyd (avmcmd)
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Name-Collision - multiple objects in this wiki use the name latencyd!
|
AVM-Command
| Command: | latencyd (avmcmd) - type Exec | Wiki | Freetz | IPPF | whmf | AVM | Web |
| Location: | Shell-Commands >> AVM-Commands - Origin: AVM | ||||||
| Path: | Release: /sbin Lab+Rel: /sbin | ||||||
| Properties: | Size: 29.9k - 49.4k - Firmware: 7.60 - 7.90 | ||||||
| Function: | WAN / LAN / neighbour Flow Latency Monitoring daemon. | ||||||
Goto: Endpoints - Events - Logs - Source - Dependencies - Model-Matrix - Symbols - SMW-Browser
Details
latencyd is the WAN / LAN / neighbour Flow Latency Monitoring daemon.
Communication in a network is called a flow, regardless of the protocol. It has a beginning and an end, and the time between
is called latency. The round trip time of a ping sums up the latency of each router and switch the ICMP packet has to pass,
in both directions, so 2 flows. For finding bottlenecks in a network more finegrained latency monitoring is required.
latencyd permits to measure the latency of a local fragment of a flow, either the time it takes to pass a local interface
(WAN / LAN) or the time it takes to reach a specific neighbour in the LAN (MAC address). While a ping is typically measured
in milliseconds, flow latency is measured in microseconds.
Interface latency monitoring is performed by libklatd.so which installs a monitoring callback in the routing core kdsldmod.ko.
Neighbour discovery is done by libneighbour.so. How the latency for each neighbour is measured is subject to research.
latencyd is also a KPI provider creating a JSON KPI from the collected data.
KPI (Key Performance Indicators) are a collection of sensor values like they are required for professional system monitoring.
Many services collect sensor data and generate KPI and starting with fw 7.39 FRITZ!OS implements metering in avmcounterd.
KPI are sent as IPC messages with attached JSON data to ctlmgr which serves the me_KPI.ctl IPC endpoint for this purpose.
Explained KPI providers: aha, kpid, psetd (kpi), voipkpid (libvoipkpi.so), latencyd..
Besides KPI there is also the latencyd.support.sh plugin adding the latencyd log and latency information to supportdata.
Endpoints
aicmd endpoint(s) provided by latencyd, with these functions: (fw 7.70)
root@fritz:/var/mod/root# aicmd latencyd # provided by latencyd: - fw 7.70+ HELP - show help SLABDUMP - show slab allocation SLABSHOW - show slab information QUIT - disconnect add <latency> <INADDR> - add latency data to a neighbour by inaddr show neighbour <MAC> - show latencies of a specific neighbour show neighbours - show latencies of all neighbours show neighbours limited - show latencies of a limited set of neighbours show lan - show lan latencies show wan - show wan latencies show status - show status # provided by latencyd: - fw 7.90+ show usp [wan|lan] - show wan and or lan usp output # provided by libewnwlinux.so: - fw 7.01+ ewnwlinux show csockshell - show shells running ewnwlinux show genetlink - show gerneric netlink families # provided by libewnwlinux.so: - fw 7.90+ ewnwlinux netlink show - show internal information ewnwlinux netlink getroute [address] - get route for inet address ewnwlinux netlink interfaces - show interfaces ewnwlinux netlink routes [ 4 | 6 ] - show routes # provided by libavmcsock.so: - fw 7.01+ avmcsock show csock - show all csock avmcsock show dnsconfig - show all dns context avmcsock show timercb - show all timer avmcsock show debughandles - show all debughandles avmcsock show cprocess - show all processes avmcsock set debug - set debug flags # provided by libavmcsock.so: - fw 7.29+ avmcsock show cbcontext - show all cbdata avmcsock show daemon - show daemon status avmcsock show cbuf - show cbuf status # provided by libavmcsock.so: - fw 7.39+ avmcsock getsymbol <address> - get symbol for address avmcsock show dnsglobal - show all dns global values avmcsock show dnscache - show cache avmcsock show dnsqueries - show all pending queries avmcsock show avmipc [endpoint shmatch] - show avmipc events and states avmcsock ctimer show - show all timer avmcsock ctimer overview - show ctimer overview avmcsock iotrace format unctrl|hexdump - set format for csock iotrace avmcsock iotrace file - enable iotrace to file avmcsock iotrace enable - enable iotrace via debugmsg avmcsock iotrace disable - disable iotrace avmcsock iotrace match help|<match> - show allowed matches or set match avmcsock iotrace reset - remove all matches avmcsock iotrace show - show configuration # provided by libavmcsock.so: - fw 7.90+ avmcsock show signals - show signal handler avmcsock show connector [cache|stats] - show connector information avmcsock show clogger - show clogger information avmcsock set clogmod [ <module> [ '.' <submodule ] ... ] [ '=' <level> ] - set clogmod log level avmcsock slab check - red zone/free check avmcsock slab reap [heavy] - call slab_reap/slab_reap_heavy avmcsock slab dump [long] - show slab allocation avmcsock slab show - show slab information avmcsock slab ewma [show|activate|deactivate|reset] - show average allocates/freed per second avmcsock avmipc notifier [endpoint shmatch] - show registered notifier avmcsock avmipc set [endpoint shmatch] - show states/events sent avmcsock avmipc csv [endpoint shmatch] - show states/events sent and listing as csv
Logs
This is a subset of the Temp-Files section, filtered for logfiles of latencyd:
Daily updated index of all latencyd logfiles found scanning Supportdata-Probes. Last update: 2024-04-28 06:36 GMT.
The label (temp) in the Logfile column shows there are other objects in this wiki using this name.
The Mod column shows the amount of models using the respective logfile. Click the column header to sort by this number.
| Logfile | Mod | Firmware | Description | Path | Size/Bytes | Type | Origin |
|---|---|---|---|---|---|---|---|
| .srb_latencyd | 2 | 7.80 - 7.90 | shringbuf log for latencyd | /var | 8.1k | AVM | |
| 1 logfiles | |||||||
Source
The names of source files compiled into an executable often help to understand function blocks (and show gaps in the docs).
fw 7.70 source files:
$ strings /sbin/latencyd | grep -e '\.c$' -e '\.cpp$' ar7/latencyd/latencyd_util.c ar7/latencyd/latencyd_aicmd.c ar7/latencyd/latency_measurement.c ar7/latencyd/latency_aggregator.c ar7/latencyd/latency_neighbour_info.c
Dependencies
Daily updated index of all dependencies of this command. Last update: 2024-04-28 07:29 GMT.
A * in the Mod column marks info from Supportdata-Probes, which will always stay incomplete.
| Relation | Typ | Object | Mod | Firmware | Info | Origin |
|---|---|---|---|---|---|---|
| Started by | serv | latencyd.service | 15 | 7.60 - 7.90 | supervisor service for latencyd. | AVM |
| Runs as | proc | latencyd (process) | 2* | 7.80 - 7.90 | WAN / LAN / neighbour Flow Latency Monitoring daemon. | AVM |
| Registers | wdog | latencyd (watchdog) | 2* | 7.80 - 7.90 | WAN / LAN / neighbour Flow Latency Monitoring daemon. | AVM |
| Serving | sock | me_latency_aggregator.ctl | 1* | 7.90 | avmipc endpoint of latencyd | AVM |
| Serving | sock | me_latencyd.ctl | 2* | 7.80 - 7.90 | avmipc_command endpoint of latencyd | AVM |
| Serving | sock | me_latencyd_aicmd.ctl | 1* | 7.90 | avmipc endpoint of latencyd | AVM |
| Depends on | lib | ld.so | 3 | 7.70 - 7.90 | Dynamic linker / loader | Linux |
| Depends on | lib | libar7cfg.so | 12 | 7.90 | TFFS-Configuration API to ar7.cfg and many more. | AVM |
| Depends on | lib | libavmauth.so | 15 | 7.60 - 7.90 | Fritzbox authentification helpers | AVM |
| Depends on | lib | libavmcipher.so | 12 | 7.90 | AES / DES / Rijndael encryption / decryption. | AVM |
| Depends on | lib | libavmcsock.so | 15 | 7.60 - 7.90 | Networking, I/O and helper functions | AVM |
| Depends on | lib | libavmfbstate.so | 15 | 7.60 - 7.90 | IPC fritzbox state notification | AVM |
| Depends on | lib | libavmhmac.so | 15 | 7.60 - 7.90 | HMAC / SHA / MD5 hashing. | AVM |
| Depends on | lib | libavmwdt.so | 14 | 7.60 - 7.90 | AVM-Watchdogs management API | AVM |
| Depends on | lib | libboxenv.so | 12 | 7.90 | API to the rc.conf enhanced Config-Environment | AVM |
| Depends on | lib | libboxlib.so | 15 | 7.60 - 7.90 | Box status, logging and statistics functions | AVM |
| Depends on | lib | libc.so | 15 | 7.60 - 7.90 | Standard C library | Linux |
| Depends on | lib | libcore.so | 14 | 7.60 - 7.90 | Collects the MAC addresses of the device it's running on | AVM |
| Depends on | lib | libcrypto.so | 15 | 7.60 - 7.90 | OpenSSL general crypto and X.509 library | Linux |
| Depends on | lib | libdl.so | 7 | 7.70 - 7.90 | Dynamic linking library | Linux |
| Depends on | lib | libdputil.so | 12 | 7.90 | DataPipe / packet utilities | AVM |
| Depends on | lib | libewnwjson.so | 12 | 7.90 | JSON helper functions | AVM |
| Depends on | lib | libewnwlinux.so | 15 | 7.60 - 7.90 | Linux networking functions | AVM |
| Depends on | lib | libewnwnet.so | 15 | 7.60 - 7.90 | Internet helper functions | AVM |
| Depends on | lib | libfbconf.so | 14 | 7.60 - 7.90 | API to hardcoded fbconf.cfg | AVM |
| Depends on | lib | libjuisclient.so | 12 | 7.90 | Update-Search - second generation - JUIS | AVM |
| Depends on | lib | libklatd.so | 15 | 7.60 - 7.90 | WAN Flow Latency Monitoring API | AVM |
| Depends on | lib | liblocalize.so | 12 | 7.90 | Charset conversion helper functions | AVM |
| Depends on | lib | libm.so | 7 | 7.70 - 7.90 | C math library | Linux |
| Depends on | lib | libneighbour.so | 15 | 7.60 - 7.90 | Neighbour discovery and notification API | AVM |
| Depends on | lib | liboauth2.so | 12 | 7.90 | OAuth v2.0 authentificator | Linux |
| Depends on | lib | libpthread.so | 7 | 7.70 - 7.90 | POSIX threading library | Linux |
| Depends on | lib | librt.so | 7 | 7.70 - 7.90 | POSIX realtime extensions library | Linux |
| Depends on | lib | libslab_c++.so | 12 | 7.90 | C++ slab allocator | AVM |
| Depends on | lib | libsvctl.so | 15 | 7.60 - 7.90 | supervisor notification library | AVM |
| Depends on | lib | libtiinterpreter.so | 15 | 7.60 - 7.90 | Preprocessor for SSI-Files by TI. | AVM |
| Depends on | lib | libwdt.so | 4 | 7.70 - 7.80 | AVM-Watchdogs management API | AVM |
| Depends on | lib | libwebkpiclient.so | 15 | 7.60 - 7.90 | KPI sensor for system parts which use HTTP / HTTPS | AVM |
| Depends on | lib | libwebsrv.so | 15 | 7.60 - 7.90 | HTTP / HTTPS webserver and tools. | AVM |
| Depends on | lib | libyajl.so | 15 | 7.60 - 7.90 | Event-driven JSON parser | Linux |
| Depends on | lib | libz.so | 15 | 7.60 - 7.90 | Zlib compressor / decompressor | Linux |
| 41 dependencies for this command | ||||||
Model-Matrix
Daily updated index of the presence, path and size of this command for each model. Last update: 2024-04-28 05:07 GMT.
Showing all models using this command. Click any column header (click-wait-click) to sort the list by the respective data.
The (main/scrpn/boot/arm/prx/atom) label in the Model column shows which CPU is meant for models with multiple Linux instances.
Note that this list is merged from Firmware-Probes of all known AVM firmware for a model, including Recovery.exe and Labor-Files.
| Model | Firmware | Path | Size |
|---|---|---|---|
| FRITZ!Box 5530 Fiber (main) | 7.70 - 7.80 | /sbin | 45.3k |
| FRITZ!Box 5590 Fiber (arm) | 7.70 - 7.90 | /sbin | 29.9k - 33.9k |
| FRITZ!Box 5690 Pro (arm) | 7.60 | /sbin | 29.9k |
| FRITZ!Box 6591 Cable (arm) | 7.90 | /sbin | 38.1k |
| FRITZ!Box 6591 Cable (atom) | 7.90 | /sbin | 38.1k |
| FRITZ!Box 6660 Cable (arm) | 7.90 | /sbin | 38.1k |
| FRITZ!Box 6660 Cable (atom) | 7.90 | /sbin | 38.1k |
| FRITZ!Box 6690 Cable (arm) | 7.90 | /sbin | 38.1k |
| FRITZ!Box 6690 Cable (atom) | 7.90 | /sbin | 38.1k |
| FRITZ!Box 6850 LTE | 7.90 | /sbin | 33.9k |
| FRITZ!Box 6850 5G | 7.90 | /sbin | 33.9k |
| FRITZ!Box 7530 AX | 7.70 - 7.90 | /sbin | 34.1k |
| FRITZ!Box 7590 | 7.90 | /sbin | 45.4k - 49.4k |
| FRITZ!Box 7590 AX | 7.70 - 7.90 | /sbin | 45.3k - 49.4k |
| FRITZ!Box 7690 | 7.60 | /sbin | 29.9k |
| 15 models use this command | |||
Symbols
Daily updated index of all symbols of this command. Last update: 2024-04-28 07:29 GMT.
| Firmware | Symbol |
|---|---|
| 7.70 - 7.90 | latency_aggregator_append_lan_measurement |
| 7.70 - 7.90 | latency_aggregator_append_wan_measurement |
| 7.70 - 7.90 | latency_aggregator_ctx_alloc |
| 7.70 - 7.90 | latency_aggregator_ctx_free |
| 7.70 - 7.90 | latency_aggregator_dump_neighbour |
| 7.70 - 7.90 | latency_aggregator_dump_neighbours |
| 7.70 - 7.90 | latency_aggregator_find_lan_measurement |
| 7.70 - 7.90 | latency_aggregator_find_wan_measurement_by_dsliface |
| 7.70 - 7.90 | latency_aggregator_free_wan_measurement |
| 7.70 - 7.90 | latency_aggregator_lan2json |
| 7.70 - 7.90 | latency_aggregator_reset_lan_measurements |
| 7.70 - 7.90 | latency_aggregator_reset_neighbour_measurements |
| 7.70 - 7.90 | latency_aggregator_reset_wan_measurements |
| 7.70 - 7.90 | latency_aggregator_wan2json |
| 7.70 - 7.90 | latency_info_received_cb |
| 7.70 - 7.90 | latency_link_type2str |
| 7.70 - 7.90 | latency_measurement_alloc |
| 7.70 - 7.90 | latency_measurement_bucket2str |
| 7.70 - 7.90 | latency_measurement_bucket_has_value |
| 7.70 - 7.90 | latency_measurement_find_bucket |
| 7.70 - 7.90 | latency_measurement_free |
| 7.70 - 7.90 | latency_measurement_get_total_bucket_cnt |
| 7.70 - 7.90 | latency_measurement_reset |
| 7.70 - 7.90 | latency_measurment_cfgs2bucket_size |
| 7.70 - 7.90 | latency_neighbour_info_alloc |
| 7.70 - 7.90 | latency_neighbour_info_dump |
| 7.70 - 7.90 | latency_neighbour_info_free |
| 7.70 - 7.90 | latency_neighbour_info_set_current_path |
| 7.70 - 7.90 | latency_path_init |
| 7.70 - 7.90 | latency_path_links2header |
| 7.70 - 7.90 | latency_path_links2str |
| 7.70 - 7.90 | latency_util_reset_all_measurements |
| 7.70 - 7.90 | latency_util_validate_wan_measurements |
| 7.70 - 7.90 | latencyd_aicmd_exit |
| 7.70 - 7.90 | latencyd_aicmd_init |
| 7.70 - 7.90 | latencyd_util_update_kpi |
| 7.70 - 7.90 | main |
| 37 symbols for this command | |
