diff options
Diffstat (limited to 'contrib')
| -rw-r--r-- | contrib/README | 8 | ||||
| -rw-r--r-- | contrib/dio.lua | 72 | ||||
| -rw-r--r-- | contrib/init.lua | 1 |
3 files changed, 81 insertions, 0 deletions
diff --git a/contrib/README b/contrib/README index 20b000e..16716ac 100644 --- a/contrib/README +++ b/contrib/README @@ -27,6 +27,14 @@ vicious.contrib.batpmu vicious.contrib.batproc - +vicious.contrib.dio + - provides I/O statistics for requested storage devices + - takes the disk as an argument, i.e. "sda" (or a specific + partition, i.e. "sda/sda2") + - returns a table with string keys: {total_s}, {total_kb}, {total_mb}, + {read_s}, {read_kb}, {read_mb}, {write_s}, {write_kb}, {write_mb} + and {sched} + vicious.contrib.mpc - diff --git a/contrib/dio.lua b/contrib/dio.lua new file mode 100644 index 0000000..40c4cad --- /dev/null +++ b/contrib/dio.lua @@ -0,0 +1,72 @@ +--------------------------------------------------- +-- Licensed under the GNU General Public License v2 +-- * (c) 2010, Adrian C. <anrxc@sysphere.org> +--------------------------------------------------- + +-- {{{ Grab environment +local ipairs = ipairs +local setmetatable = setmetatable +local table = { insert = table.insert } +local string = { gmatch = string.gmatch } +local helpers = require("vicious.helpers") +-- }}} + + +-- Disk I/O: provides I/O statistics for requested storage devices +module("vicious.contrib.dio") + + +-- Initialize function tables +local disk_usage = {} +local disk_total = {} +-- Variable definitions +local unit = { ["s"] = 1, ["kb"] = 2, ["mb"] = 2048 } + +-- {{{ Disk I/O widget type +local function worker(format, disk) + if not disk then return end + + local disk_lines = { [disk] = {} } + local disk_stats = helpers.pathtotable("/sys/block/" .. disk) + + if disk_stats.stat then + local match = string.gmatch(disk_stats.stat, "[%s]+([%d]+)") + for i = 1, 11 do -- Store disk stats + table.insert(disk_lines[disk], match()) + end + end + + -- Ensure tables are initialized correctly + local diff_total = { [disk] = {} } + if not disk_total[disk] then + disk_usage[disk] = {} + disk_total[disk] = {} + + while #disk_total[disk] < #disk_lines[disk] do + table.insert(disk_total[disk], 0) + end + end + + for i, v in ipairs(disk_lines[disk]) do + -- Diskstats are absolute, substract our last reading + diff_total[disk][i] = v - disk_total[disk][i] + + -- Store totals + disk_total[disk][i] = v + end + + -- Calculate and store I/O + helpers.uformat(disk_usage[disk], "read", diff_total[disk][3], unit) + helpers.uformat(disk_usage[disk], "write", diff_total[disk][7], unit) + helpers.uformat(disk_usage[disk], "total", diff_total[disk][7] + diff_total[disk][3], unit) + + -- Store I/O scheduler + if disk_stats.queue and disk_stats.queue.scheduler then + disk_usage[disk]["{sched}"] = string.gmatch(disk_stats.queue.scheduler, "%[([%a]+)%]") + end + + return disk_usage[disk] +end +-- }}} + +setmetatable(_M, { __call = function(_, ...) return worker(...) end }) diff --git a/contrib/init.lua b/contrib/init.lua index e0f681a..a8c5ee6 100644 --- a/contrib/init.lua +++ b/contrib/init.lua @@ -9,6 +9,7 @@ require("vicious.contrib.batacpi") require("vicious.contrib.batpmu") require("vicious.contrib.batproc") +require("vicious.contrib.dio") require("vicious.contrib.mpc") require("vicious.contrib.netcfg") require("vicious.contrib.net") |