FYI, we noticed the following commit:
commit: 935356cecda851d94381e1c6fea9dec443f908fe ("x86/apic: Initialize interrupt
mode after timer init")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git x86/apic
in testcase: will-it-scale
with following parameters:
nr_task: 100%
mode: process
test: open2
cpufreq_governor: performance
test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel
copies to see if the testcase will scale. It builds both a process and threads based test
in order to see any differences between the two.
test-url:
https://github.com/antonblanchard/will-it-scale
on test machine: 256 threads Phi with 96G memory
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+----------------+------------+------------+
| | 34fba3e6b1 | 935356cecd |
+----------------+------------+------------+
| boot_successes | 4 | 4 |
+----------------+------------+------------+
kern :info : [ 0.020000] tsc: Fast TSC calibration using PIT
kern :info : [ 0.024000] tsc: Detected 1297.000 MHz processor
kern :info : [ 0.028000] Calibrating delay loop (skipped), value calculated using
timer frequency.. 2594.00 BogoMIPS (lpj=5188000)
kern :info : [ 0.032007] pid_max: default: 278528 minimum: 2176
kern :info : [ 0.036266] ACPI: Core revision 20170728
kern :err : [ 0.040010] ACPI Error: Table [DMAR] is not invalidated during early
boot stage (20170728/tbxface-196)
kern :info : [ 0.105384] ACPI: 3 ACPI AML tables successfully acquired and loaded
kern :info : [ 0.132721] Dentry cache hash table entries: 8388608 (order: 14,
67108864 bytes)
kern :info : [ 0.149441] Inode-cache hash table entries: 4194304 (order: 13, 33554432
bytes)
kern :info : [ 0.152556] Mount-cache hash table entries: 131072 (order: 8, 1048576
bytes)
kern :info : [ 0.156404] Mountpoint-cache hash table entries: 131072 (order: 8,
1048576 bytes)
To reproduce:
git clone
https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Thanks,
lkp