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Diffstat (limited to 'docs/loadbars.pod')
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diff --git a/docs/loadbars.pod b/docs/loadbars.pod index 4a029bd..f0382aa 100644 --- a/docs/loadbars.pod +++ b/docs/loadbars.pod @@ -1,17 +1,90 @@ =head1 NAME -loadbars - Small tool to observe server loads +loadbars - A small and humble tool to observe server loads =head1 SYNOPSIS -For any program help check out --help on command line or 'h' during program +=head2 I like flying elephants + +For any startup params help check out --help on command line or 'h' during program execution. +=head2 A few examples however + +loadbars --extended 1 --showcores 1 --height 300 --hosts localhost + +loadbars --hosts localhost,server1.example.com,server2.example.com + +loadbars --cluster foocluster (foocluster is in /etc/clusters [ClusterSSH]) + =head1 DESCRIPTION Loadbars is a small script that can be used to observe CPU loads of several remote servers at once in real time. It connects with SSH (using SSH public/private key auth) to several servers at once and vizualizes all server CPUs and memory statistics right next each other (either summarized or each core separately). Loadbars is not a tool for collecting CPU loads and drawing graphs for later analysis. However, since such tools require a significant amount of time before producing results, Loadbars lets you observe the current state immediately. Loadbars does not remember or record any load information. It just shows the current CPU usages like top or vmstat does. +=head1 INFO + +=head2 CPU stuff + +st = Steal in % [see man proc] (extended), Color: Red + +gt = Guest in % [see man proc] (extended), Color: Red + +sr = Soft IRQ usage in % (extended), Color: White + +ir = IRQ usage in % (extended), Color: White + +io = IOwait cpu sage in %, Color: Purple + +id = Idle cpu usage in % (extended), Color: Black + +ni = Nice cpu usage in %, Color: Green + +us = User cpu usage in %, Color: Yellow, dark yellow if to>50%, orange if to>50% + +sy = System cpu sage in %, Color: Blue, lighter blue if >30% + +to = Total CPU usage, which is (100% - id) + +pk = Max us+sy peak of last avg. samples (extended) + +avg = System load average; desc. order: 1, 5 and 15 min. avg. + +1px horizontal line: Maximum sy+us+io of last 'avg' samples (extended) + +Extended means: text display only if extended mode is turned on + +=head2 Memory stuff + +Ram: System ram usage in %, Color: Dark grey + +Swp: System swap usage in %, Color: Grey + +=head2 Network stuff + +Rxb: Incoming (received) traffic in %, Color: Light green, normal green if >100% while using low netlink reference. Bar comes from top and is half width. + +Txb: Outgoing (transmitted) traffic in %, Color: Light green, normal green if >100% while using low netlink reference. Bar comes from bottom and is half width. + +When network bar is red: The interface does not exist on the specific remote host. + +=head3 Config file support + +Loadbars tries to read ~/.loadbarsrc and it's possible to configure any option you find in --help but without leading '--'. For comments just use the '#' sign. Sample config: + +=over 4 + +showcores=1 # Always show cores on startup + +showtext=0 # Always don't display text on startup + +extended=1 # Always use extended mode on startup + +=back + +will always show all CPU cores in extended mode but no text display. + + =head1 LICENSE See package description or project website. |