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Fix issues in the monitoring logic

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This commit is contained in:
Guillaume DIDIER 2024-06-24 17:37:14 +02:00
parent f6494a82b2
commit 88775ea015
2 changed files with 8 additions and 4 deletions
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2
cache_slice/src/bin/scan.rs
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@ -8,7 +8,7 @@ pub fn main() {
let nb_cores = core_per_package();
println!("Found {} cores", nb_cores);
let target = vec![0x0123456789abcdefu64, 64];
let target = vec![0x0123456789abcdefu64; 64];
let old = sched_getaffinity(Pid::from_raw(0)).unwrap();
let mut core_set = Vec::new();

10
cache_slice/src/lib.rs
View File

@ -49,7 +49,7 @@ unsafe fn monitor_xeon(addr: *const u8, cpu: u8, max_cbox: usize) -> Result<Vec<
// Reset counters
for i in 0..max_cbox {
write_msr_on_cpu(performance_counters.msr_pmon_ctl0[i], cpu, performance_counters.val_box_reset)?;
write_msr_on_cpu(performance_counters.msr_pmon_box_ctl[i], cpu, performance_counters.val_box_reset)?;
}
// Enable counting
@ -72,14 +72,18 @@ unsafe fn monitor_xeon(addr: *const u8, cpu: u8, max_cbox: usize) -> Result<Vec<
// Freeze counters
for i in 0..max_cbox {
write_msr_on_cpu(performance_counters.msr_pmon_ctr0[i], cpu, performance_counters.val_box_freeze)?;
write_msr_on_cpu(performance_counters.msr_pmon_box_ctl[i], cpu, performance_counters.val_box_freeze)?;
}
// Read counters
let mut results = Vec::new();
for i in 0..max_cbox {
let result = read_msr_on_cpu(performance_counters.msr_pmon_ctr0[i], cpu)?;
results.push(result)
if (result - NUM_POKE as u64) < 0 {
results.push(0);
} else {
results.push(result - NUM_POKE as u64);
}
}
Ok(results)