Skip to content

GitLab

  • Menu
Projects Groups Snippets
  • Help
    • Help
    • Support
    • Community forum
    • Submit feedback
    • Contribute to GitLab
  • Sign in / Register
  • mesa mesa
  • Project information
    • Project information
    • Activity
    • Labels
    • Members
  • Repository
    • Repository
    • Files
    • Commits
    • Branches
    • Tags
    • Contributors
    • Graph
    • Compare
  • Issues 2,870
    • Issues 2,870
    • List
    • Boards
    • Service Desk
    • Milestones
  • Merge requests 894
    • Merge requests 894
  • CI/CD
    • CI/CD
    • Pipelines
    • Jobs
    • Schedules
  • Deployments
    • Deployments
    • Releases
  • Packages & Registries
    • Packages & Registries
    • Container Registry
  • Analytics
    • Analytics
    • Value stream
    • CI/CD
    • Repository
  • Activity
  • Graph
  • Create a new issue
  • Jobs
  • Commits
  • Issue Boards
Collapse sidebar
  • Mesa
  • mesamesa
  • Issues
  • #1636

Closed
Open
Created Sep 25, 2019 by Bugzilla Migration User@bugzilla-migration

[GEN7] 10-20% drop in SynMark terrain tests perf, 4% drop in Manhattan 3.0 perf

Submitted by Eero Tamminen

Assigned to Intel 3D Bugs Mailing List

Link to original bug (#103110)

Description

On HSW GT2, performance dropped in following tests:

  • 10-20% in 4 SynMark2 v7 Terrain tests
  • 4% in GfxBench Manhattan 3.0
  • 2% in GfxBench T-Rex
  • 1-2% in GfxBench CarChase

GfxBench tests perf drop both for onscreen & offscreen versions.

Similar, but much smaller drops are visible also on BYT. I don't see drops in these cases on SNB or GEN8+ platforms, so it seems GEN7 specific.

This drop happens between following commits:

  • Good: 7f3eab03 2017-10-02 freedreno/a5xx: fix missing restore state
  • Bad: df6b320a 2017-10-03 etnaviv: Set up unknown GC3000 states

Looking at the commits between this range, one of following changes could be the cause for the drop:

  • intel: Always set Cube Face Enables for all surfaces.
  • refactor for: i965: Implement ARB_indirect_parameters
  • glsl refactor done by Ian

Hopefully somebody has time to bisect this further.

Version: git

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information
Assignee
Assign to
Time tracking