NAME
kumostat - get kumofs status
SYNOPSIS
kumostat server-address[:port=19800] command
kumostat -m manager-address[:port=19700] command
DESCRIPTION
Get status from Server node.
COMMANDS
- pid
-
get pid of server process
- uptime
-
get uptime
- time
-
get UNIX time
- version
-
get version
- cmd_get
-
get total number of processed get requests
- cmd_set
-
get total number of processed set requests
- cmd_delete
-
get total number of processed delete requests
- items
-
get number of stored items
- rhs
-
get rhs (routing table for Get)
- whs
-
get whs (routing table for Set/Delete)
- hscheck
-
check if rhs == whs
- set_delay
-
maximize throughput at the expense of latency
- unset_delay
-
maximize throughput at the expense of latency
DELAY MODE
If the delay mode is enabled, req/sec throughput is maximized at the expense of latency. This mode actually disables TCP_NODELAY option of all sockets. The practice of this feature is as following:
- run some scripts that watches load of the kumo-server. (see source code of kumotop)
- if the load of kumo-server becomes high, enable delay mode by kumostat set_delay command.
- if the load of kumo-server becomes low, disable delay mode by kumostat unset_delay command.
EXAMPLE
$ kumostat svr1 items
$ kumotop -m mgr1 hscheck