Graphs refresh every 10 minutes.
Sourced from /proc/stat
user/nice: time spent in normal / niced processes in user mode
system: time spent in kernel mode
idle: time spent doing nothing
misc: various miscellaneous categories, broken down in second graph:
iowait: time spent waiting for I/O (apparently not reliable to measure as ideally something not waiting will fill this time)
irq/softirq: servicing interrupts / software interrupts
steal: involuntary wait (because this is a VM?)
guest/guest_nice: time spent in a normal / niced guest
unknown: in theory everything should add up to 100% * CPU count, but it doesn't so unknown fills that space, assume it isn't accurate...
processes: number of forks (new processes/threads started?)
procs_running: number of processes in runnable state
procs_blocked: number of processes blocked waiting for I/O
Sourced from /proc/meminfo
mem_used: memory not used by anything else listed
mem_cached: memory used for the disk cache and swap cache
mem_buffers: memory used for some sort of temporary storage?
mem_shared: memory used for shared memory and other purposes
mem_free: unused memory
Sourced from /proc/swaps
Sourced from /sys/fs/cgroup/memory.stat (/sys/kernel/debug/zswap/ is more common and I assume is more accurate, but root is required to access debugfs and I don't know the security implications of making it readable)
compressed: the amount of memory that is stored compressed in zswap
uncompressed: the amount of memory that is stored uncompressed in zswap
pool: the size of the zswap pool
from mem: the number of pages moved from memory into zswap
to mem: the number of pages moved from zswap back into memory
to disk: the number of pages moved from zswap to normal disk-based swap
Sourced from /proc/diskstats
read_completes/write_completes: completed read / write operations
io_current: number of operations in progress
read_sectors/write_sectors: number of read / written sectors
read_time/write_time/io_weighttime: time spent reading / writing / (roughly) doing any I/O
io_time: amount of time any I/O is happening
Sourced from /proc/net/dev
