[Bug 101074] [BAT][CTG] igt at kms_pipe_crc_basic@suspend-read-crc-pipe-* tests take 4x longer than expected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101074

--- Comment #4 from Chris Wilson <chris at chris-wilson.co.uk> ---
Looks to be a core issue:

Good
[  692.066239] Suspended for 16.027 seconds
[  692.066239] Enabling non-boot CPUs ...
[  692.066239] x86: Booting SMP configuration:
[  692.066493] smpboot: Booting Node 0 Processor 1 APIC 0x1
[  692.065884] Disabled fast string operations
[  692.473002]  cache: parent cpu1 should not be sleeping
[  692.576576] CPU1 is up

Bad
[  694.716026] Suspended for 15.789 seconds
[  694.716026] Enabling non-boot CPUs ...
[  694.716026] x86: Booting SMP configuration:
[  694.716026] smpboot: Booting Node 0 Processor 1 APIC 0x1
[  694.715245] Disabled fast string operations
[  749.656665] perf: interrupt took too long (19602 > 19486), lowering
kernel.perf_event_max_sample_rate to 10000
[  779.491744]  cache: parent cpu1 should not be sleeping
[  780.651986] CPU1 is up

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