This functionality is currently available only on Onshape's browser platform.

The Performance panel provides statistics related to the model, graphics, and document, in addition to system details. These statistics can alert you to areas where the document, Part Studio and Assembly structure can be improved to obtain a more efficient performance.

The Performance panel is available in all Onshape documents and in all tab types. It is located in the Document panel (aligned vertically under the Onshape logo) at the top left of the window.

performance icon in documentation panel

Click the Performance icon to open the Performance panel.

Performance panel informationCopy link

By default, Performance panel tables are sorted by highest to lowest count, from top to bottom. For example, if there are more Faces than Lines in a Primitives table (under Tab graphics), then Faces will display above Lines. Click the down arrow to the right of the Count label in the heading to reverse the entire table's sort order. It will now display the lowest to highest count, from top to bottom.

Performance panel iconsCopy link

The table below outlines the Icons and their meanings.

Icon Meaning
information message icon Information message - The entity can contribute to performance issues in the future. Even though no immediate action is required, you should take note of the issue and avoid repeating workflows that contribute to the issue. Clicking the icon opens the related message at the bottom of the panel.
warning message icon Warning message - The entity might be performing sub-optimally, causing the tab or document to become slow. Troubleshoot the slow entity in the near future to speed up document performance. Clicking the icon opens the related message at the bottom of the panel.
error message icon Error message - The entity is preventing you from using Onshape in an optimal way. Follow the instructions immediately to resolve this issue. Clicking the icon opens the related message at the bottom of the panel.
information top level message icon Top level information - Indicates there is an information message within the sub-section of a top-level section
warning top level message icon Top level warning - Indicates there is a warning message within the sub-section of a top-level section
error top level message icon Top level error - Indicates there is an error message within the sub-section of a top-level section

Performance panel messagesCopy link

When there is an identified performance issue, an icon appears in the Performance panel next to the entity causing the issue. Clicking the icon opens its related message at the bottom area of the panel. To close the warning message, click the x in the top right corner of the message box. The following image is an example of a warning message:

Performance panel warning message example

The table below outlines the Performance panel messages and their type (level of message severity), what triggers these messages, message context (where the user is located in the software for the message to be shown), and where you can obtain further information to resolve the performance issue.

Message Message type Message trigger Message context Resolution
[x Feature] contains features that took a long time to regenerate. Improve performance by troubleshooting features with long regeneration times. warning message icon Warning Individual Feature Regeneration Time is greater than 10 seconds Part Studio See Check regeneration times in the Part Studio
[x document] took a long time to load. Improve performance by troubleshooting features with long regeneration times. information message icon Information Total Regeneration Time is greater than 30 seconds Part Studio See Check regeneration times in the Part Studio
[x document] took a long time to load. Improve performance by troubleshooting features with long regeneration times. warning message icon Warning Total Regeneration Time is greater than 60 seconds Part Studio See Check regeneration times in the Part Studio
[x Part Studio] contains many features. Lots of features will cause long regeneration times. Consider using in-context references. warning message icon Warning Total Number of Features is greater than 500 Part Studio See Modeling In-Context
[x Assembly] took [x time] to solve mates. Onshape mates are more efficient and only require one mate between any two instances. warning message icon Warning Assembly Solve Time is greater than 5 seconds Assembly See Tips for working with Mates
[x document] contains many document tabs. Improve performance by moving tabs into different documents. Right-click on the tab and select Move to document. information message icon Information Total number of Tabs is between 250 and 500 document See Keep tabs per document at a reasonable number
[x document] contains many document tabs. Improve performance by moving tabs into different documents. Right-click on the tab and select Move to document. warning message icon Warning Total number of Tabs is greater than 500 document See Keep tabs per document at a reasonable number
[x document] contains many document tabs. Improve performance by moving tabs into different documents. Right-click on the tab and select Move to document information message icon Information Total number of Part Studios or Assemblies is between 150 and 200 document See Keep tabs per document at a reasonable number
[x document] contains many document tabs. Improve performance by moving tabs into different documents. Right-click on the tab and select Move to document. warning message icon Warning Total number of Part Studios or Assemblies is greater than 200 document See Keep tabs per document at a reasonable number
System is not supported. Use an Onshape supported browser and platform found in our hardware and graphics recommendations. error message icon Error Browser not supported System See Hardware and Graphics Performance Recommendations
WebGL is not supported.Make sure that your browser has WebGL activated. More information about WebGL support can be found in our hardware and graphics recommendations. error message icon Error WebGL not supported WebGL See Hardware and Graphics Performance Recommendations
Main Assembly has parts with highest available tessellation. Increased tessellation quality can cause graphical performance issues. Improve performance by reducing tessellation quality. information message icon Information Very Fine tessellation Part Studio / Assembly See Specifying tessellation quality of parts
You have a weak connection to our servers, which can cause performance issues. Improve connection by using our Hardware and Graphics Recommendations. warning message icon Warning Latency is greater than 250 ms. System See Network and Region Issues.
You are connected to a data center outside your current region.

You are not connecting to a data center in our region, which can cause performance issues. Improve connection by using our Hardware and Graphics Recommendations.
warning message icon Warning Expected region differs from Region. System See Network and Region Issues.

The Performance panel is a general list of factors and statistics that have performance implications. Factors in the performance panel may not be the main reason behind performance issues. If you have implemented resolutions outlined in this topic and associated help topics, and performance does not improve, contact Customer Support.

For more information see Performance.