| Bug ID | 1499 |
|---|---|
| Summary | Intel uncore power library fails because of too many frequencies |
| Product | DPDK |
| Version | 24.07 |
| Hardware | x86 |
| OS | Linux |
| Status | UNCONFIRMED |
| Severity | normal |
| Priority | Normal |
| Component | core |
| Assignee | dev@dpdk.org |
| Reporter | stephen@networkplumber.org |
| Target Milestone | --- |
Running 24.07-rc2 on Intel core box fails the power uncore test because: RTE>>power_intel_uncore_autotest POWER: Too many available uncore frequencies: 33 POWER: Cannot get available uncore frequencies of pkg 00 die 00 Cannot initialise uncore power management for pkg 0 die 0, this may occur if environment is not configured correctly(APCI cpufreq) or operating in another valid Power management environment The CPU is: 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz initial_max_freq_khz:3600000 initial_min_freq_khz:400000 max_freq_khz:3600000 min_freq_khz:400000 Which leads to this expression: num_uncore_freqs = (ui->init_max_freq - ui->init_min_freq) / BUS_FREQ + 1; if (num_uncore_freqs >= MAX_UNCORE_FREQS) { POWER_LOG(ERR, "Too many available uncore frequencies: %d", num_uncore_freqs); I.e: num_uncore_freqs = (3600000 - 400000) / 100000 + 1 = 33 Looks like an off-by-one error, was this ever tested?