[SERVER-10696] repl/mod_move.js runs SUPER SLOW on debug builders (20+ min vs 1 min) Created: 06/Sep/13  Updated: 10/Dec/14  Resolved: 06/Aug/14

Status: Closed
Project: Core Server
Component/s: Testing Infrastructure
Affects Version/s: None
Fix Version/s: None

Type: Bug Priority: Major - P3
Reporter: Matt Kangas Assignee: Unassigned
Resolution: Done Votes: 0
Labels: buildbot
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Backwards Compatibility: Fully Compatible
Operating System: ALL
Participants:

 Description   

I didn't believe this when I first saw it, but it's true. Here is the execution time of `jstests/repl/mod_move.js` on a really fast Linux 64-bit box as of Sept 6 (rev def8f6fb859a04)

  • Non-debug build: 18 seconds
  • Debug build: 13 MINUTES

Example from MCI Sept 6 (rev 4b4fd431f5)

Debug builds are expected to be slower, but this is seriously crazy slow, and that test failed because it was so slow.

How long has this been true? Most buildbot debug instances have been disabled so we've lost that data. Here is the one remaining one:

Buildbot Linux 32-bit debug



 Comments   
Comment by Matt Kangas [ 06/Aug/14 ]

Issue not longer manifests in MCI DEBUG builds, on either 2.6 or master

Comment by Matt Kangas [ 09/Sep/13 ]

Test of execution time for this test across multiple versions (running on buildmeister.10gen.cc)

master (def8f6fb859a04)

  • non-debug: 0m20.988s
  • debug: 10m43.605s

r2.5.2

  • non-debug: 0m20.297s
  • debug:

r2.5.1

  • non-debug:
  • debug:

r2.5.0

  • non-debug: 0m17.786s
  • debug: 8m42.723s

r2.4.0

  • non-debug: 0m16.022s
  • debug: 12m10.375s

r2.3.1 (2.3.0 fails to compile)

  • non-debug: 0m14.599s
  • debug: 12m1.012s

r2.2.0

  • non-debug: 0m17.271s
  • debug: 8m9.373s

r2.1.0 (can't compile)

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