Dell PowerConnect W-Airwave User Manual page 255

Table 130 System > Performance Page Fields (Continued)
Field
System Load Aver-
age
System Memory
Usage
System Disk
Utilization
Swap Usage
System CPU Usage
Application CPU
Usage
I/O Throughput
CPU Utilization
System Network
Bandwidth (Eth0)
Bandwidth by
Protocol (Eth0)
Legacy SNMP
Fetcher (SNMP Get/
walk Requests)
Legacy SNMP
Fetcher (SNMP
OIDs Received)
High Performance
SNMP Fetcher
(SNMP Get/walk
Requests)
High Performance
SNMP Fetcher
(SNMP OIDs
Received)
Top 5 Tables (by
row count)
Database Table
Scans
Database Row
Activity
Dell PowerConnect W AirWave 7.1 | User Guide
Description
The System Load average is the number of jobs currently waiting to be processed. Load is a rough metric
that will tell you how busy a server is. A typical AWMS load is around 3. A constant load of 5 to 7 is cause
for concern. A load above 10 is a serious issue and will probably result in AWMS becoming unusable. To
lower the load average try increasing a few polling periods. Increasing the polling period for APs, routers/
switches, WLSE, ACS, and so on, will decrease the amount of work AWMS needs to perform and lower the
load average. If you have a load that is consistently below 3 you might consider shortening your polling
period and observing.
NOTE: If the load is less than one the y scale will be 1 to 1000 m standing for milliseconds or
1/1000ths of 1.
The amount of RAM that is currently used broken down by usage. It is normal for AWMS to have very little
free RAM. Linux automatically allocates all free ram as cache and buffer. If the kernel needs additional
RAM for process it will dynamically take it from the cache and buffer.
The amount of data read from the disk and written to the disk.
The amount of Swap memory used by AWMS. Swap is used when the there is no more free physical RAM.
A large performance penalty is paid when swap is used. If an AWMS consistently uses swap you should
consider installing additional RAM for the box.
The percentage of CPU that has been used by the user and the system as well as the amount that was idle.
CPU usage broken down by application. AWMS services includes all AWMS processes except the
database and the webserver.
Displays reads and writes for workers (AMP services, database, VisualRF, web server, RRD tool and
AWRRD tool) and for services (AMP, VisualRF and web server).
Displays reads and writes for workers (AMPservices, database, VisualRF, web server, RRD tool and
AWRRD tool) and for services (AMP, VisualRF and web server).
All traffic in and out of Eth0 measured in bits per second.
Displays the amount of traffic used by Telnet, HTTPS and SNMP on Eth0.
The number of SNMP get and walk requests per second performed by the legacy (v1 and v3) SNMP
fetcher.
The number of SNMP OIDs received per second performed by the legacy (v1 and v3) SNMP fetcher.
The number of SNMP get and walk requests per second performed by the high performance SNMP (v2c)
fetcher.
The number of SNMP OIDs received per second performed by the high performance SNMP (v2c) fetcher.
The five largest tables in AWMS. Degraded performance has been noticed for in some cases for tables
over 200,000 rows. Aruba recommends decreasing the length of time client data is stored on the AWMS
page if a user/client table exceeds 250,000 rows.
The number of Database table scans performed by the database.
The number of insertions, deletions and updates performed to the database.
Performing Daily Administration in AWMS | 255