Description shanxifanshi 2024-03-21 18:24:20 UTC

[缺陷描述]：
intel_pstate03用例fail，预期设置governors模式为powersave后，cpu当前频率和最小频率差值的绝对值小于100000，实际不满足要求；performance模式存在同样问题


测试日志：
<<<test_start>>>
tag=intel_pstate03 stime=1711015439
cmdline="intel_pstate03.sh"
contacts=""
analysis=exit
<<<test_output>>>
incrementing stop
intel_pstate03 1 TFAIL: freqency verify failed for powersave governor
intel_pstate03 1 TFAIL: freqency verify failed for performance governor

Summary:
passed   0
failed   2
skipped  0
warnings 0
<<<execution_status>>>
initiation_status="ok"
duration=61 termination_type=exited termination_id=1 corefile=no
cutime=8 cstime=5
<<<test_end>>>


复现环境：
anck 5.10 x86 g8i ecs

复现概率：
必现

内核信息：
# uname -r
5.10.134-16.3_rc1.an8.x86_64


操作系统信息：
# cat /etc/os-release
NAME="Anolis OS"
VERSION="8.8"
ID="anolis"
ID_LIKE="rhel fedora centos"
VERSION_ID="8.8"
PLATFORM_ID="platform:an8"
PRETTY_NAME="Anolis OS 8.8"
ANSI_COLOR="0;31"
HOME_URL="https://openanolis.cn/"

cpu信息：
# lscpu
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              8
On-line CPU(s) list: 0-7
Thread(s) per core:  2
Core(s) per socket:  4
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
BIOS Vendor ID:      Alibaba Cloud
CPU family:          6
Model:               143
Model name:          Intel(R) Xeon(R) Platinum 8475B
BIOS Model name:     pc-q35-df-2.1
Stepping:            8
CPU MHz:             3200.221
CPU max MHz:         3800.0000
CPU min MHz:         800.0000
BogoMIPS:            5400.00
Hypervisor vendor:   KVM
Virtualization type: full
L1d cache:           48K
L1i cache:           32K
L2 cache:            2048K
L3 cache:            99840K
NUMA node0 CPU(s):   0-7
Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq monitor ssse3 fma cx16 pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single ibrs_enhanced fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb avx512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves avx_vnni avx512_bf16 wbnoinvd ida arat hwp hwp_notify hwp_act_window hwp_epp hwp_pkg_req avx512vbmi umip pku ospke waitpkg avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg avx512_vpopcntdq rdpid bus_lock_detect cldemote movdiri movdir64b enqcmd fsrm uintr md_clear serialize tsxldtrk amx_bf16 avx512_fp16 amx_tile amx_int8 arch_capabilities

内存信息：
# free -h
              total        used        free      shared  buff/cache   available
Mem:           30Gi       261Mi        29Gi       2.0Mi       992Mi        29Gi
Swap:            0B          0B          0B


内核参数：
# cat /proc/cmdline
BOOT_IMAGE=(hd0,gpt3)/boot/vmlinuz-5.10.134-16.3_rc1.an8.x86_64 root=UUID=31fda586-5228-4434-99dc-e779134d4e43 ro cryptomgr.notests rcupdate.rcu_cpu_stall_timeout=300 vring_force_dma_api rhgb quiet biosdevname=0 net.ifnames=0 console=tty0 console=ttyS0,115200n8 noibrs nvme_core.io_timeout=4294967295 nvme_core.admin_timeout=4294967295 cgroup.memory=nokmem crashkernel=0M-2G:0M,2G-8G:192M,8G-:256M processor.max_cstate=1 intel_idle.max_cstate=0

[复现步骤]：
手动简要复现步骤：
std_freq=`cpupower frequency-info | grep 'hardware limits' | awk -F '- ' '{print$2}' | awk -F G '{print $1}'`
std_freq=`echo "scale=0; $std_freq * 1000000 / 1" | bc`
min_freq=`cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq`
max_freq=`cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq`

mode="powersave"
echo 0 > /sys/devices/system/cpu/intel_pstate/no_turbo

#设置governors模式为powersave
cpupower frequency-set -g $mode
cpupower frequency-set -d $min_freq -u $std_freq

#反复查询当前cpu频率30次
curr_freq=`cat /sys/devices/system/cpu/cpu0/cpufreq/*_cur_freq`

[期望结果]：
当前cpu频率curr_freq和最小cpu频率差值的绝对值小于100000

[实际结果]：
用例fail，二者差值有2300000左右，远远大于100000