Suggested template:
Problem/Question
mem.cachestat_ratio doesn’t work for me anymore. And it’s very good/important metric for me. It’s eBPF plugin
Relevant docs you followed/actions you took to solve the issue
netdata@ns3122599:/usr/libexec/netdata/plugins.d$ ./go.d.plugin -d -m ebpf
DBG godplugin/main.go:62 plugin: name=go.d, version=v2.2.6 component=agent
DBG godplugin/main.go:64 current user: name=netdata, uid=111 component=agent
INF godplugin/main.go:68 env HTTP_PROXY '', HTTPS_PROXY '' component=agent
INF agent/agent.go:159 instance is started component=agent
INF agent/setup.go:23 loading config file component=agent
DBG agent/setup.go:31 looking for 'go.d.conf' in [/etc/netdata /usr/lib/netdata/conf.d] component=agent
INF agent/setup.go:38 found '/usr/lib/netdata/conf.d/go.d.conf component=agent
INF agent/setup.go:45 config successfully loaded component=agent
INF agent/agent.go:163 using config: enabled 'true', default_run 'true', max_procs '0' component=agent
INF agent/setup.go:50 loading modules component=agent
INF agent/setup.go:73 enabled/registered modules: 0/124 component=agent
INF agent/agent.go:176 no modules to run component=agent
netdata@ns3122599:/usr/libexec/netdata/plugins.d$ ./ebpf.plugin
time=2025-02-21T15:06:13.675+00:00 comm=ebpf.plugin source=collector level=info errno="2, No such file or directory" tid=2667617 msg="Does not have a configuration file inside `/etc/netdata/ebpf.d.conf. It will try to load stock file."
time=2025-02-21T15:06:13.680+00:00 comm=ebpf.plugin source=collector level=info tid=2667617 msg="Name resolution is disabled, collector will not parse \"hostnames\" list."
time=2025-02-21T15:06:13.680+00:00 comm=ebpf.plugin source=collector level=info errno="2, No such file or directory" tid=2667617 msg="Loaded config file '/etc/netdata/apps_groups.conf'"
FUNCTION GLOBAL "network-sockets-tracing" 5 "Detailed information about open sockets." "top" 0x13 100
CHART mount_points.call '' 'Calls to mount and umount syscalls' 'calls/s' 'mount (eBPF)' 'mount_points.call' 'line' 2190 5 '' 'ebpf.plugin' 'mount'
DIMENSION mount mount incremental 1 1
DIMENSION umount umount incremental 1 1
CHART mount_points.error '' 'Errors to mount and umount file systems' 'calls/s' 'mount (eBPF)' 'mount_points.error' 'line' 2191 5 '' 'ebpf.plugin' 'mount'
DIMENSION mount mount incremental 1 1
DIMENSION umount umount incremental 1 1
BEGIN mount_points.call
SET mount = 0
SET umount = 0
END
BEGIN mount_points.error
SET mount = 0
SET umount = 0
END
BEGIN mount_points.call
SET mount = 0
SET umount = 0
END
BEGIN mount_points.error
SET mount = 0
SET umount = 0
END
CHART netdata.ebpf_threads '' 'Threads running.' 'boolean' 'ebpf' '' 'line' 140000 10 '' 'ebpf.plugin' 'main'
DIMENSION process process absolute 1 1
DIMENSION cachestat cachestat absolute 1 1
DIMENSION sync sync absolute 1 1
DIMENSION dc dc absolute 1 1
DIMENSION swap swap absolute 1 1
DIMENSION vfs vfs absolute 1 1
DIMENSION filesystem filesystem absolute 1 1
DIMENSION disk disk absolute 1 1
DIMENSION mount mount absolute 1 1
DIMENSION fd fd absolute 1 1
DIMENSION hardirq hardirq absolute 1 1
DIMENSION softirq softirq absolute 1 1
DIMENSION oomkill oomkill absolute 1 1
DIMENSION shm shm absolute 1 1
DIMENSION mdflush mdflush absolute 1 1
CHART netdata.monitoring_pid '' 'Total number of monitored PIDs' 'pids' 'ebpf' 'netdata.ebpf_pids' 'line' 140001 10 '' 'ebpf.plugin' 'main'
DIMENSION user user absolute 1 1
DIMENSION kernel kernel absolute 1 1
CHART netdata.ebpf_life_time '' 'Time remaining for thread.' 'seconds' 'ebpf' '' 'line' 140002 10 '' 'ebpf.plugin' 'main'
DIMENSION process process absolute 1 1
DIMENSION cachestat cachestat absolute 1 1
DIMENSION sync sync absolute 1 1
DIMENSION dc dc absolute 1 1
DIMENSION swap swap absolute 1 1
DIMENSION vfs vfs absolute 1 1
DIMENSION filesystem filesystem absolute 1 1
DIMENSION disk disk absolute 1 1
DIMENSION mount mount absolute 1 1
DIMENSION fd fd absolute 1 1
DIMENSION hardirq hardirq absolute 1 1
DIMENSION softirq softirq absolute 1 1
DIMENSION oomkill oomkill absolute 1 1
DIMENSION shm shm absolute 1 1
DIMENSION mdflush mdflush absolute 1 1
CHART netdata.ebpf_threads_socket '' 'Threads running.' 'boolean' 'ebpf' '' 'line' 140011 10 '' 'ebpf.plugin' 'main'
DIMENSION socket socket absolute 1 1
CHART netdata.ebpf_life_time_socket '' 'Time remaining for thread.' 'seconds' 'ebpf' '' 'line' 140012 10 '' 'ebpf.plugin' 'main'
DIMENSION socket socket absolute 1 1
CHART netdata.ebpf_load_methods '' 'Load info.' 'methods' 'ebpf' '' 'line' 140003 10 '' 'ebpf.plugin' 'process'
DIMENSION legacy legacy absolute 1 1
DIMENSION co-re co-re absolute 1 1
CHART netdata.ebpf_kernel_memory '' 'Memory allocated for hash tables.' 'bytes' 'ebpf' '' 'line' 140004 10 '' 'ebpf.plugin' 'process'
DIMENSION memory_locked memory_locked absolute 1 1
CHART netdata.ebpf_hash_tables_count '' 'Number of hash tables loaded.' 'hash tables' 'ebpf' '' 'line' 140005 10 '' 'ebpf.plugin' 'process'
DIMENSION hash_table hash_table absolute 1 1
CHART netdata.ebpf_hash_tables_per_core '' 'How threads are loading hash/array tables.' 'threads' 'ebpf' '' 'line' 140006 10 '' 'ebpf.plugin' 'process'
DIMENSION per_core per_core absolute 1 1
DIMENSION unique unique absolute 1 1
CHART netdata.ebpf_hash_tables_global_elements '' 'Controllers inside global table' 'rows' 'ebpf' '' 'line' 140007 10 '' 'ebpf.plugin' 'process'
DIMENSION process process absolute 1 1
DIMENSION socket socket absolute 1 1
DIMENSION cachestat cachestat absolute 1 1
DIMENSION sync sync absolute 1 1
DIMENSION dc dc absolute 1 1
DIMENSION swap swap absolute 1 1
DIMENSION vfs vfs absolute 1 1
DIMENSION filesystem filesystem absolute 1 1
DIMENSION disk disk absolute 1 1
DIMENSION mount mount absolute 1 1
DIMENSION fd fd absolute 1 1
DIMENSION hardirq hardirq absolute 1 1
DIMENSION softirq softirq absolute 1 1
DIMENSION oomkill oomkill absolute 1 1
DIMENSION shm shm absolute 1 1
DIMENSION mdflush mdflush absolute 1 1
CHART netdata.ebpf_hash_tables_insert_pid_elements '' 'Elements inserted into PID table' 'rows' 'ebpf' '' 'line' 140008 10 '' 'ebpf.plugin' 'process'
DIMENSION process process incremental 1 1
DIMENSION socket socket incremental 1 1
DIMENSION cachestat cachestat incremental 1 1
DIMENSION dc dc incremental 1 1
DIMENSION swap swap incremental 1 1
DIMENSION vfs vfs incremental 1 1
DIMENSION fd fd incremental 1 1
DIMENSION oomkill oomkill incremental 1 1
DIMENSION shm shm incremental 1 1
CHART netdata.ebpf_hash_tables_remove_pid_elements '' 'Elements removed from PID table' 'rows' 'ebpf' '' 'line' 140009 10 '' 'ebpf.plugin' 'process'
DIMENSION process process incremental 1 1
DIMENSION socket socket incremental 1 1
DIMENSION cachestat cachestat incremental 1 1
DIMENSION dc dc incremental 1 1
DIMENSION swap swap incremental 1 1
DIMENSION vfs vfs incremental 1 1
DIMENSION fd fd incremental 1 1
DIMENSION oomkill oomkill incremental 1 1
DIMENSION shm shm incremental 1 1
BEGIN netdata.ebpf_threads
SET process = 0
SET cachestat = 0
SET sync = 0
SET dc = 0
SET swap = 0
SET vfs = 0
SET filesystem = 0
SET disk = 0
SET mount = 1
SET fd = 0
SET hardirq = 0
SET softirq = 0
SET oomkill = 0
SET shm = 0
SET mdflush = 0
END
BEGIN netdata.monitoring_pid
SET user = 0
SET kernel = 0
END
BEGIN netdata.ebpf_life_time
SET process = 0
SET cachestat = 0
SET sync = 0
SET dc = 0
SET swap = 0
SET vfs = 0
SET filesystem = 0
SET disk = 0
SET mount = 4294967285
SET fd = 0
SET hardirq = 0
SET softirq = 0
SET oomkill = 0
SET shm = 0
SET mdflush = 0
END
BEGIN netdata.ebpf_load_methods
SET legacy = 0
SET co-re = 1
END
BEGIN netdata.ebpf_kernel_memory
SET memory_locked = 864
END
BEGIN netdata.ebpf_hash_tables_count
SET hash_table = 1
END
BEGIN netdata.ebpf_hash_tables_per_core
SET per_core = 1
SET unique = 0
END
BEGIN netdata.ebpf_hash_tables_global_elements
SET process = 0
SET socket = 0
SET cachestat = 0
SET sync = 0
SET dc = 0
SET swap = 0
SET vfs = 0
SET filesystem = 0
SET disk = 0
SET mount = 6
SET fd = 0
SET hardirq = 0
SET softirq = 0
SET oomkill = 0
SET shm = 0
SET mdflush = 0
END
BEGIN netdata.ebpf_hash_tables_insert_pid_elements
SET process = 0
SET socket = 0
SET cachestat = 0
SET dc = 0
SET swap = 0
SET vfs = 0
SET fd = 0
SET oomkill = 0
SET shm = 0
END
BEGIN netdata.ebpf_hash_tables_remove_pid_elements
SET process = 0
SET socket = 0
SET cachestat = 0
SET dc = 0
SET swap = 0
SET vfs = 0
SET fd = 0
SET oomkill = 0
SET shm = 0
END
BEGIN netdata.ebpf_threads_socket
SET socket = 0
END
BEGIN netdata.ebpf_life_time_socket
SET socket = 0
END
BEGIN mount_points.call
SET mount = 0
SET umount = 0
END
BEGIN mount_points.error
SET mount = 0
SET umount = 0
END
BEGIN mount_points.call
SET mount = 0
SET umount = 0
END
BEGIN mount_points.error
SET mount = 0
SET umount = 0
END
Environment/Browser/Agent’s version etc
Node ID
6761e296-9cc4-4006-b686-881dfeba3450
Connection
Status:
Live
Netdata Agent:v2.2.6
What I expected to happen
mem.cachestat_ratio to be returned in netdata
Example of how it works in other older node.
