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Hitachi Vantara Knowledge

Controlling the performance graph display

When displaying performance and capacity data, you can specify the date range to be displayed by the graph, either selecting one of the built-in ranges, or you can specify the date range for the display (a custom display range). To specify one of the standard display ranges, click one of the links in the display control above the upper right corner of the graph:

The standard display ranges include the following:

  • 10m displays the last 10 minute’s worth of collected data.
  • 1h displays the last hour’s worth of collected data.
  • 1d displays the last day’s (the last 24 hours, not the last calendar day) worth of collected data.
  • 1w displays the last week’s worth of collected data.
  • 1m displays the last month’s worth of collected data.
  • 3m displays the last three months’s worth of collected data.
  • 1y displays the last year’s worth of collected data.
NoteBecause data older than 24 hours is periodically aggregated into hourly averages, date ranges that are longer than 24 hours will display aggregated data for periods more than 24 hours in the past.

You can specify a custom date range for the display of the performance graph by clicking Custom.

Displaying a custom date range

Specifying a custom date range for the display of the performance graph allows you to examine system behavior under certain specific periods of time, which allows you to assess the impact of changes to the system or changes in the load on the system. To display a custom date range:

Procedure

  1. From the Status and Monitoring page, display the performance graph containing the data of interest.

    • Click Performance Graphs to display the Performance Graphs page. You can then display a custom date range for all the inset graphs on the page, or click an inset graph to access one of the following full-size graphs on its own page:
      • Node ops
      • Ethernet throughput
      • System load
      • Disk latency
      • Storage throughput
      • Cache and heap usage
      • NVRAM waited allocs
      • Running Network Receive fibers
    • Click File System Ops/Sec to access the File System Ops/Sec page.
    • Click File System Capacity to access the File System Capacity page.
    • Click Storage Pool Capacity to access the Storage Pool Capacity page.
  2. After displaying the performance graph containing the data of interest, click Custom to display the custom date range controls.

  3. Click the From calendar icon to display the calendar control to select the start of the date range.

    The following table describes the calendar control:

    Item Description
    Left arrow Click the left arrow to change to the month preceding the month displayed in the control.
    Right arrow Click the right arrow to change to the month following the month displayed in the control.
    Day selector Click a day in the calendar control to select that day. Note that selecting a day returns you to the graph page.
    Time In the Time edit box, you can specify the time, using the 24-hour notation and in the format hh:mm:ss.
  4. Click the To calendar icon to display the calendar control, which you then use to select the end of the date range.

  5. Click OK to display the performance graph using data from the specified date range.

Displaying the Performance Graphs page

The Performance Graph page provides an overview of a single node’s performance status.

Procedure

  1. Navigate to Home Status & Monitoring Performance Graphs to display the Performance Graphs page.

    Item Description
    Node List includes all nodes in the cluster. For a stand-alone server, only one node will appear in the list.

    By default, the graphs on this page display system performance data for the first cluster node of the cluster; however, you can select a specific node from the drop down list in order to view its unique performance data.

    At any time, to display the performance information for a node other than the one currently being displayed, select the node from the list.

    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Performance Graphs The individual performance graphs on this page are links to pages that display a full-size version of that same graph. To display the page containing the full-sized graph, click the graph you want to display. The following graphs are displayed on this page:
    • Node Ops/Sec
    • Ethernet Throughput
    • System Load
    • Disk Latency
    • Storage Throughput
    • Cache and Heap Usage
    • NVRAM Waited Allocs
    • Running Network Receive Fibers
  2. Optionally, change the date range displayed in the graph using the date range controls.

Displaying Node Ops/Sec

The Node Ops/Sec page displays system performance data for node ops/sec for all the cluster nodes of the currently managed cluster. For example, if the server has four cluster nodes, four graphs for node ops/sec are displayed on this page.

Procedure

  1. Navigate to Home Status & Monitoring Performance Graphs Node Ops/Sec to display the Node Ops/Sec page.

    Item Description
    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    Ops/Sec The number of recorded operations per second.
    Date/Time The currently selected date/time range.
    Min/Max/Median The minimum, maximum, and median number of operations per second detected in the currently displayed date range.
  2. Optionally, change the date range displayed in the graph using the date range controls.

Displaying Ethernet Throughput

The Ethernet Throughput page displays system performance data for Ethernet throughput, for both transmission and reception, a per-node basis for all the cluster nodes of the currently managed cluster.

Procedure

  1. Navigate to Home Status & Monitoring Performance Graphs Ethernet Throughput to display the Ethernet Throughput page.

    Item Description
    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    Mb/Gb/sec The number of megabits (Mb) or gigabits (Gb) transmitted (TX) and received (RX) per second.
    Date/Time The currently selected date/time range.
  2. Optionally, change the date range displayed in the graph using the date range controls.

Displaying System Load

The System Load page displays system performance data for system load for all the cluster nodes of the currently managed cluster. The graph displays the percentage of maximum usage at a given point in time.

Procedure

  1. Navigate to Home Status & Monitoring Performance Graphs System Load to display the System Load page.

    Item Description
    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    % Load For servers or nodes containing FSB and FSA module, file system loads are displayed as a percentage of maximum projected capacity of those modules.

    For servers and nodes containing MFB and MMB boards, file system loads are displayed as a percentage of the maximum projected capacity of those boards.

    Refer to the hardware reference for your system for more information on the hardware in your server/nodes.

    Date/Time The currently selected date/time range.
  2. Optionally, change the date range displayed in the graph using the date range controls.

Displaying Disk Latency

The Disk Latency page displays system performance data for disk latency (disk read, write, and disk stripe write) in milliseconds for all the cluster nodes of the currently managed cluster.

Procedure

  1. Navigate to Home Status & Monitoring Performance Graphs Disk Latency to display the Disk Latency page.

    Item Description
    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    Milliseconds The number of milliseconds of latency for disk read operations, write operations, and disk stripe write operations.
    Date/Time The currently selected date/time range.
  2. Optionally, change the date range displayed in the graph using the date range controls.

Displaying Storage Throughput

The Storage Throughput page displays system performance data for Storage throughput (transmission and reception) for all the cluster nodes of the currently managed cluster in megabits per second (Mb/sec).

Procedure

  1. Navigate to Home Status & Monitoring Performance Graphs Storage Throughput to display the Storage Throughput page.

    Item Description
    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    Mb/Gb/sec The aggregated number of megabits (Mb) or gigabits (Gb) transmitted (TX) and received (RX) per second through the Storage ports of the node.
    Date/Time The currently selected date/time range.
  2. Optionally, change the date range displayed in the graph using the date range controls.

Displaying Cache and Heap Usage

Procedure

  1. Navigate to Home Status & Monitoring Performance Graphs Cache and Heap Usage to display the Cache and Heap Usage page.

    Item Description
    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    % Usage The percentage of the total available FSI cache and heap in use.
    Date/Time The currently selected date/time range.
  2. Optionally, change the date range displayed in the graph using the date range controls.

Displaying NVRAM Waited Allocs

The NVRAM Waited Allocs page displays system performance data for the number of NVRAM waited allocs per second for all the cluster nodes of the currently managed cluster. An NVRAM waited alloc indicates that a file system has had to wait for NVRAM space to be allocated, which means that performance has been negatively impacted.

Procedure

  1. Navigate to Home Status & Monitoring Performance Graphs NVRAM Waited Allocs to display the NVRAM Waited Allocs page.

    Item Description
    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    Allocs/Sec The average number of times per second a node’s NVRAM had to wait for NVRAM space to be allocated.
    Date/Time The currently selected date/time range.
    Min/Max/Median The minimum, maximum, and median number of NVRAM waited allocs per second detected in the currently displayed date range.
  2. Optionally, change the date range displayed in the graph using the date range controls.

Displaying Running Network Receive Fibers

The Running Network Receive Fibers page displays system performance data for the number of network receive fibers in use for all the cluster nodes of the currently managed cluster. Most file serving traffic received from the network is handled synchronously by one of a pool of these network receive threads.

Procedure

  1. Navigate to Home Status & Monitoring Performance Graphs Running Network Receive Fibers to display the Running Network Receive Fibers page.

    Item Description
    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    Fibers The number of network receive fibers currently in use.
    Date/Time The currently selected date/time range.
    Min/Max/Median The minimum, maximum, and median number of network receive fibers in use during the currently displayed date range.
  2. Optionally, change the date range displayed in the graph using the date range controls.

Displaying File System Ops/Sec

The File System Ops/Sec page displays file system performance data for up to five selected file systems of the currently managed cluster or server. This graph displays the average number of read/write operations performed per second by the selected file systems.

Procedure

  1. Navigate to Home Status & Monitoring File System Ops/Sec to display the File System Ops/Sec page.

    Item Description
    10m 1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 10 minutes (10m), 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    Select 1-5 File Systems Displays all the file systems in the currently managed server or cluster. To select file systems, and display the performance data for that file system:
    1. On your keyboard, press and hold the Control (Ctrl) key.
    2. Highlight up to five file systems.
    3. Click OK.
    Ops/Sec The number of recorded operations per second.
    Date/Time The currently selected date/time range.
  2. Using the Select a File System list, select the file systems, and display the performance data.

  3. Optionally, change the date range displayed in the graph using the date range controls.

Displaying File System Capacity

The File System Capacity page displays file system capacity data for up to five selected file systems of the currently managed cluster or server. This graph displays the total space used, in MB (megabytes), GB (gigabytes) or TB (terabytes), including live data and snapshot usage by the selected file systems.
NoteThe maximum size of a file system is 1 PB, but a 1 PB file system is only supported on an HDP storage pool.

Procedure

  1. Navigate to Home Status & Monitoring File System Capacity to display the File System Ops/Sec page.

    Item Description
    1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last 1 hour (1h), 1 day (1d), 1 week (1w), 1 month (1m), 3 months (3m), or 1 year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    Select a File System Displays all the file systems in the currently managed server or cluster. To display the performance data for a file system:

    1. Click on a file system name.
    2. Click OK.

    NoteOnly one file system can be selected at a time.
    MB, GB, or TB The total space used, in MB (megabytes), GB (gigabytes) or TB (terabytes), including live data and snapshot usage by the selected file systems.
    Date/Time The currently selected date/time range.
  2. Using the Select a File System list, select the file systems, and display the performance data for the selected file systems.

  3. Optionally, change the date range displayed in the graph using the date range controls.

Displaying Storage Pool Capacity

The Storage Pool Capacity page displays capacity and usage data for the selected storage pool (span) of the currently managed cluster or server. This graph displays the total space allocated and used, in MB (megabytes), GB (gigabytes) or TB (terabytes), by all file systems in the selected storage pool.

Procedure

  1. Navigate to Home Status & Monitoring Storage Pool Capacity to display the Storage Pool Capacity page.

    Item Description
    1h 1d 1w 1m 3m 1y Click the corresponding link to display graphs for the last hour (1h), day (1d), week (1w), month (1m), 3 months (3m), or year (1y).
    Custom Click to specify a custom date range, which includes the from and to dates and times. Click OK to initiate the graph.
    Download Download statistics on the graph as a single CSV table.
    Select a Storage Pool Displays all the storage pools (spans) in the currently managed server or cluster. Highlight the storage pool for which you want to display data, and click OK.
    MB, GB, or TB The storage pool capacity (the total space allocated to the storage pool) and the amount of storage in use by the storage pool. The capacity and usage are indicated in MB (megabytes), GB (gigabytes), or TB (terabytes).
    Date/Time The currently selected date/time range.
  2. Using the Select a Storage Pool list, select the storage pool, and display the performance data for that storage pool.

  3. Optionally, change the date range displayed in the graph using the date range controls.

Downloading performance data

You can download performance and capacity data from any of the performance or capacity graphs. The data is downloaded to your client in a compressed .CSV (comma-separated values) text file, that can be decompressed and then opened by many applications. The data downloaded is from the currently specified date range, and it includes the following data points:
  • For all data collected within the last 24 hours, all data points collected at the minimum collection interval for the information shown in the graph. The minimum collection interval differs, and depends on the data being collected.
  • For all data collected more than 24 hours in the past, data points are aggregated and averaged into hourly values, and only the hourly values are retained for up to one year.

Procedure

  1. Navigate to the graph containing the data you want to download:

    • Click Performance Graphs to display the Performance Graphs page. You can then display a custom date range for all the inset graphs on the page, or click an inset graph to access one of the following full-size graphs on its own page:
      • Node ops
      • Ethernet throughput
      • System load
      • Disk latency
      • Storage throughput
      • Cache and heap usage
      • NVRAM waited allocs
      • Running Network Receive fibers
    • Click File System Ops/Sec to access the File System Ops/Sec page.
    • Click File System Capacity to access the File System Capacity page.
    • Click Storage Pool Capacity to access the Storage Pool Capacity page.
  2. Click Custom to set the date range for the data you want to download

  3. On the individual graph pages, click Download (located next to the date range display controls) to display a dialog that allows you to open the file or to save the file in a destination director. The dialog that appears depends on your browser, but in general you should indicate that you want to save the file, and click OK or Save.

  4. Specify (or navigate to) the destination directory, and then click OK or Save to save the downloaded file in that directory.

    The download process might take anywhere from a few seconds to a few minutes, depending on how much data is in the file to be downloaded. After the file has been downloaded, it can be decompressed using any utility that can decompress zip files.

 

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