52 lines
2.0 KiB
Plaintext
52 lines
2.0 KiB
Plaintext
@ kaio.reads Number of kaio read requests
|
|
Cumulative number of Kernel AIO read requests since system boot time.
|
|
|
|
@ kaio.writes Number of kaio write requests
|
|
Cumulative number of Kernel AIO write requests since system boot time.
|
|
|
|
@ kaio.read_bytes Number of kaio bytes read
|
|
Cumulative number of bytes read via Kernel AIO requests since system
|
|
boot time.
|
|
|
|
@ kaio.write_bytes Number of kaio bytes written
|
|
Cumulative number of bytes written via Kernel AIO requests since system
|
|
boot time.
|
|
|
|
@ kaio.free Number of free kaio control buffers
|
|
Current number of Kernel AIO control buffers on the global free list.
|
|
|
|
kaio.inuse + kaio.free should be equal to the total number of
|
|
allocated Kernel AIO control buffers, i.e. max_sys_aio defined in
|
|
/var/sysgen/master.d/kaio
|
|
|
|
@ kaio.inuse Number of outstanding kaio requests
|
|
Current number of Kernel AIO control buffers not on the global free
|
|
list.
|
|
|
|
kaio.inuse + kaio.free should be equal to the total number of
|
|
allocated Kernel AIO control buffers, i.e. max_sys_aio defined in
|
|
/var/sysgen/master.d/kaio
|
|
|
|
@ kaio.proc_maxinuse Largest kaio per-process free list
|
|
The biggest per-process free list size for Kernel AIO service requests
|
|
that has been observed since system boot time.
|
|
|
|
@ kaio.nobuf Number of times a caller blocked waiting for a free kaio request buffer
|
|
Callers on the Kernel AIO service require a request buffer (kaio
|
|
header). There are a finite number of these buffers (max_sys_aio
|
|
defined in /var/sysgen/master.d/kaio), and the buffers are kept on
|
|
global and per-process free lists.
|
|
|
|
This metric measures the number of times (since system boot time) that
|
|
a request for such a buffer was turned down because no buffers were
|
|
available on that process's per-process free list or on the global free
|
|
list.
|
|
|
|
@ kaio.errors Number of kaio errors
|
|
Cumulative number of Kernel AIO errors since system boot time.
|
|
|
|
@ kaio.inprogress Number of kaio operations in progress
|
|
Number of Kernel AIO operations in the state between "Kernel AIO
|
|
read()/write() system call made" and "interrupt received from disk
|
|
driver and processed by Kernel AIO".
|