top - 08:35:37 up 54 days, 20:49,  3 users,  load average: 12.20, 6.70, 2.80
Tasks: 346 total,  13 running, 332 sleeping,   0 stopped,   1 zombie
%Cpu(s): 98.2 us,  1.7 sy,  0.0 ni,  0.0 id,  0.0 wa,  0.0 hi,  0.1 si,  0.0 st 
MiB Mem :  64221.7 total,   1572.7 free,   4983.4 used,  58684.1 buff/cache     
MiB Swap:   8192.0 total,   7863.7 free,    328.3 used.  59238.3 avail Mem 

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                                
2249765 user    20   0  126952  64132  51200 R 100.0   0.1   3:48.87 sonicLiquidFoam                                        
2249759 user    20   0  127060  64220  51200 R 100.0   0.1   3:48.93 sonicLiquidFoam                                        
2249757 user    20   0  126624  64064  51328 R 100.0   0.1   3:49.32 sonicLiquidFoam                                        
2249761 user    20   0  128276  64868  50688 R 100.0   0.1   3:47.65 sonicLiquidFoam                                        
2249762 user    20   0  127652  63688  50432 R 100.0   0.1   3:49.13 sonicLiquidFoam                                        
2249755 user    20   0  128844  66128  51200 R 100.0   0.1   3:46.06 sonicLiquidFoam                                        
2249766 user    20   0  126576  63952  51328 R 100.0   0.1   3:47.87 sonicLiquidFoam                                        
2249764 user    20   0  126612  63824  51072 R  99.0   0.1   3:48.59 sonicLiquidFoam                                        
2249760 user    20   0  126888  63972  51072 R  98.7   0.1   3:45.06 sonicLiquidFoam                                        
2249758 user    20   0  127500  64860  51200 R  97.7   0.1   3:48.64 sonicLiquidFoam                                        
2249763 user    20   0  127916  64944  51072 R  97.0   0.1   3:39.58 sonicLiquidFoam                                        
2249756 user    20   0  126828  63948  51072 R  96.0   0.1   3:48.77 sonicLiquidFoam

top - 08:40:22 up 54 days, 20:53,  3 users,  load average: 6.11, 6.67, 3.90
Tasks: 335 total,   7 running, 327 sleeping,   0 stopped,   1 zombie
%Cpu(s): 50.0 us,  1.0 sy,  0.0 ni, 49.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st 
MiB Mem :  64221.7 total,   1616.2 free,   4914.6 used,  58710.3 buff/cache     
MiB Swap:   8192.0 total,   7863.7 free,    328.3 used.  59307.1 avail Mem 

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                                
2250032 user    20   0  127392  64676  51200 R 100.0   0.1   2:39.15 sonicLiquidFoam                                        
2250027 user    20   0  126828  63096  50176 R 100.0   0.1   2:39.23 sonicLiquidFoam                                        
2250028 user    20   0  127060  63260  50176 R 100.0   0.1   2:39.23 sonicLiquidFoam                                        
2250029 user    20   0  128844  66124  51200 R 100.0   0.1   2:39.12 sonicLiquidFoam                                        
2250030 user    20   0  128276  65508  51200 R 100.0   0.1   2:39.21 sonicLiquidFoam                                        
2250031 user    20   0  126596  63808  51072 R 100.0   0.1   2:39.21 sonicLiquidFoam

# taskset -p 1078
pid 1078's current affinity mask: 3f

# cat /proc/1078/status | grep Cpus
Cpus_allowed:   ff
Cpus_allowed_list:      0-7

# cat /dev/cpuset/cpus 
0-7

# taskset -p ff 1078
pid 1078's current affinity mask: 5f
pid 1078's new affinity mask: 5f

root@hobot:~# uname -a
Linux hobot 6.1.94-rt33 #1 SMP PREEMPT_RT Fri Nov  8 15:11:35 CST 2024 aarch64 GNU/Linux

lsof -w -l +d /var/lib/php5

| Nehalem                   || Mperf              || RAPL               || Idle_Stats
 CPU| C3   | C6   | PC3  | PC6   || C0   | Cx   | Freq  || pack | core | unco  || POLL | C1_A | C2_A | C3_A
   0|  0.00|  0.46|  0.00|  0.00|| 11.71| 88.29|  3060||37496059|27532217| 73852||  0.01|  8.94| 79.93|  0.00
   1|  0.00|  0.46|  0.00|  0.00||  6.56| 93.44|  2790||37496059|27532217| 73852||  0.00|  2.56| 53.19| 37.97
   2|  0.00|  4.67|  0.00|  0.00||  9.14| 90.86|  3194||37496059|27532217| 73852||  0.01|  4.43| 58.09| 28.77
   3|  0.00|  4.67|  0.00|  0.00||  6.24| 93.76|  3239||37496059|27532217| 73852||  0.00|  1.69| 34.62| 57.66
   4|  0.00|  0.00|  0.00|  0.00||  0.29| 99.71|  4461||37496059|27532217| 73852||  0.00|  0.00|  0.00| 99.97
   5|  0.00|  0.00|  0.00|  0.00|| 29.52| 70.48|  4457||37496059|27532217| 73852||  0.00| 64.48|  0.00|  6.48
   6|  0.00|  0.00|  0.00|  0.00|| 47.92| 52.08|  4123||37496059|27532217| 73852||  0.00|  0.95|  0.31| 51.40
   7|  0.00|  0.00|  0.00|  0.00||  0.00|100.00|  3753||37496059|27532217| 73852||  0.00|  0.00|  0.00| 99.99
   8|  0.00| 25.03|  0.00|  0.00||  3.27| 96.73|  2807||37496059|27532217| 73852||  0.01|  4.13| 54.72| 38.03
   9|  0.00| 62.12|  0.00|  0.00||  2.32| 97.68|  2897||37496059|27532217| 73852||  0.00|  1.29| 30.79| 65.69
  10|  0.00| 77.85|  0.00|  0.00||  2.19| 97.81|  3064||37496059|27532217| 73852||  0.00|  0.94| 18.42| 78.51
  11|  0.00|  0.00|  0.00|  0.00|| 14.84| 85.16|  2497||37496059|27532217| 73852||  0.01| 57.88| 27.45|  0.38
  12|  0.00| 70.55|  0.00|  0.00||  3.27| 96.73|  2399||37496059|27532217| 73852||  0.00|  1.33| 30.14| 65.41
  13|  0.00| 54.45|  0.00|  0.00||  4.02| 95.98|  2213||37496059|27532217| 73852||  0.00|  1.06| 43.49| 51.62
  14|  0.00| 67.90|  0.00|  0.00||  3.36| 96.64|  2334||37496059|27532217| 73852||  0.00|  1.34| 30.91| 64.54
  15|  0.00| 72.39|  0.00|  0.00||  2.41| 97.59|  2167||37496059|27532217| 73852||  0.00|  1.25| 26.74| 69.73

import time
import numpy as np
import threading

data = np.zeros((1024, 1024, 1024, 1), dtype=np.uint8)

def allocate_memory():
    while True:
        start_time = time.time()
        _ = data * 0
        end_time = time.time()
        print(f"Time: {end_time - start_time:.3f} s")
    
    print(data.shape)

def run_in_threads(num_threads):
    threads = []
    for _ in range(num_threads):
        thread = threading.Thread(target=allocate_memory)
        thread.start()
        threads.append(thread)
    
    for thread in threads:
        thread.join()

if __name__ == "__main__":
    num_threads = 32
    run_in_threads(num_threads)

#!/bin/bash

host=$(hostname)
email="abc.@xyz.com"  # Change to your desired email
subject="Attention!!! Health check Failed on $host"
echo $(date)

# CPU use threshold
cpu_threshold=0

# Memory idle threshold
mem_threshold=0

#--- CPU
cpu_usage () {
    # Get CPU idle percentage
    cpu_idle=$(prstat -Z 1 1 | awk 'NR==2 {print $8}' | tr -d '%')
    
    # Check if cpu_idle is a valid number
    if ! [[ "$cpu_idle" =~ ^[0-9]+$ ]]; then
        echo "Error: Invalid CPU idle value: $cpu_idle"
        cpu_use=0
    else
        cpu_use=$((100 - cpu_idle))
    fi

    cpu_flag=0
    echo "CPU utilization: $cpu_use%"
    if [ "$cpu_use" -gt "$cpu_threshold" ]; then
        echo "CPU warning!!!"
        cpu_flag=1
    else
        echo "CPU ok!!!"
    fi
}

#--- Memory
mem_usage () {
    mem_total=$(kstat -m | grep "physmem" | awk '{print $2}')  # Total memory in bytes
    mem_free=$(kstat -m | grep "freemem" | awk '{print $2}')   # Free memory in bytes

    if [[ -z "$mem_total" || "$mem_total" -eq 0 ]]; then
        echo "Failed to retrieve total memory."
        mem_total=0
        mem_free=0
    fi

    # Convert bytes to GB
    mem_total_gb=$((mem_total / 1024 / 1024))
    mem_free_gb=$((mem_free / 1024 / 1024))

    echo "Total memory: $mem_total_gb GB"
    echo "Free memory: $mem_free_gb GB"

    if [ "$mem_total" -gt 0 ]; then
        per_mem=$(( ((mem_total - mem_free)) * 100 / mem_total ))
    else
        per_mem=0
    fi

    echo "Memory space remaining: $mem_free_gb GB"
    mem_flag=0
    if [ "$per_mem" -gt "$mem_threshold" ]; then
        echo "Memory warning!!!"
        mem_flag=1
    else
        echo "Memory ok!!!"
    fi
}

out() {
    if [ "$cpu_flag" -eq 1 ] && [ "$mem_flag" -eq 1 ]; then 
        printf "
Hello Team,

Please check RAM and CPU utilization on $host.
Current RAM Percentage: $per_mem%%
Current CPU Percentage: $cpu_use%%

Thanks " > /tmp/health.txt
    elif [ "$cpu_flag" -eq 1 ]; then 
        printf "
Hello Team,

Please check CPU utilization on $host.
Current CPU Percentage: $cpu_use%%

Thanks " > /tmp/health.txt
    elif [ "$mem_flag" -eq 1 ]; then 
        printf "
Hello Team,

Please check RAM utilization on $host.
Current RAM Percentage: $per_mem%%

Thanks " > /tmp/health.txt
    fi
}

mail() {
    if [ "$cpu_flag" -eq 1 ] || [ "$mem_flag" -eq 1 ]; then
        /usr/sbin/sendmail -t <

Fri Oct 11 06:51:21 CDT 2024
Error: Invalid CPU idle value: 17:25:22
CPU utilization: 0%
CPU ok!!!
Usage:
kstat [ -qlp ] [ -T d|u ] [ -c class ]
      [ -m module ] [ -i instance ] [ -n name ] [ -s statistic ]
      [ interval [ count ] ]
kstat [ -qlp ] [ -T d|u ] [ -c class ]
      [ module:instance:name:statistic ... ]
      [ interval [ count ] ]
Usage:
kstat [ -qlp ] [ -T d|u ] [ -c class ]
      [ -m module ] [ -i instance ] [ -n name ] [ -s statistic ]
      [ interval [ count ] ]
kstat [ -qlp ] [ -T d|u ] [ -c class ]
      [ module:instance:name:statistic ... ]
      [ interval [ count ] ]
Failed to retrieve total memory.
Total memory: 0 GB
Free memory: 0 GB
Memory space remaining: 0 GB
Memory ok!!!