Ticket #1 (closed defect: fixed)

Opened 12 years ago

Last modified 12 years ago

kernel is running way too slow

Reported by: laforge@… Owned by: laforge@…
Priority: high Milestone:
Component: kernel Version: unspecified
Severity: critical Keywords:
Cc: buglog@… Blocked By:
Blocking: Estimated Completion (week):
HasPatchForReview: PatchReviewResult:
Reproducible:

Description

The 2.7.17.7 kernel is running way too slow at the moment. Overal system
performance is about 10% of what is to be expected.

during kernel bootup we clearly see that clocks are configured correctly:
S3C2410: core 202.800 MHz, memory 101.400 MHz, peripheral 50.700 MHz

but then:

Calibrating delay loop... 4.39 BogoMIPS (lpj=10976)

Comparison with other S3C2410 systems shows that bogomips should be at about 100
(at 200MHz cpu core clock).

I've already checked SDRAM timings, bus access mode (async/sync) and cache
enabled status without finding a cause for the problem.

Change History

comment:1 Changed 12 years ago by laforge@…

  • Status changed from new to assigned

comment:2 Changed 12 years ago by laforge@…

  • Status changed from assigned to closed
  • Resolution set to fixed

has been fixed, was related to caches being disabled by bootloader

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