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https://github.com/kneutron/ansitest.git
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126 lines
4.3 KiB
Bash
126 lines
4.3 KiB
Bash
#!/bin/bash
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# 2024.feb kneutron
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# optional arg1 $1 = vmid if already known
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# Assign cores 2-7 to boinc win10 6-core vm on 8-core host
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# OR Assign cores 7-5 to boinc win10 3-core vm on 8-core host
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# Features:
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# Auto-determines last core number
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# Adapts on-the-fly to 2,3+ vcpus (up to 6) as long as cpu usage is > 0
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# Can be extended easily for more vcpu counts
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# This should obviously be done on quad-core or better CPU
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psax
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declare -i vmid lastcpu penultcpu # has to be a number
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if [ "$1" = "" ]; then
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read -p "Enter VMID of highest-CPU kvm: " vmid
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else
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vmid=$1
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fi
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[ "$vmid" = "" ] || [ "$vmid" = "0" ] && exit 44;
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lastcpu=$(grep processor /proc/cpuinfo |tail -n 1 |awk '{print $3}')
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let penultcpu=$lastcpu-1
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# print only pid / subthreads that are using >0 CPU
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pidlist=$(ps -eLf --columns $COLUMNS |grep "kvm -id $vmid" |egrep -v 'grep|bash' |awk '$5>0 {print $4}')
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echo $pidlist
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#exit;
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function assigncores () {
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set -x
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taskset -p $1
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taskset -cp $penultcpu,$lastcpu $1
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taskset -cp $lastcpu $2
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taskset -cp $penultcpu $3
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let penultcpu=$penultcpu-1
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[ "$4" = "" ] || taskset -cp $penultcpu $4
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let penultcpu=$penultcpu-1
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[ "$5" = "" ] || taskset -cp $penultcpu $5
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let penultcpu=$penultcpu-1
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[ "$6" = "" ] || taskset -cp $penultcpu $6
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let penultcpu=$penultcpu-1
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[ "$7" = "" ] || taskset -cp $penultcpu $7
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}
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# assign cpu cores 6,7 to win10 vm for better latency
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# REF: https://www.youtube.com/watch?v=-c_451HV6fE
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# psthreads.sh 'kvm -id 112' |awk '$5>0 {print}' # field 4 is pid + subthreads
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assigncores $pidlist
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set +x
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echo "Monitor changes with htop"
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exit;
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# Adapt to different multicore systems
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# grep processor /proc/cpuinfo |tail -n 1
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processor : 7
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# grep processor /proc/cpuinfo |tail -n 1 |awk '{print $3}'
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7
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===== Example output:
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# proxmox-vm-assign-cpu-cores-6-vcpu--8-pcpu.sh 112 [17/39]
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11:59:53 up 4 days, 15:12, 8 users, load average: 3.03, 2.72, 2.93
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PID USER NI %CPU PSR %MEM COMMAND
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1634464 root 0 187 7 37.5 /usr/bin/kvm -id 112 -name win10-net-iso-install-boinc,debug-threads=on -no-shutdown -chardev soc
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1290029 root 0 10.3 1 11.5 /usr/bin/kvm -id 108 -name squidvm-2p5gig-10gig-HO-fasterstorage,debug-threads=on -no-shutdown -c
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607603 root 0 6.0 3 2.6 /usr/bin/kvm -id 111 -name ipfire-dhcp-for-10gig,debug-threads=on -no-shutdown -chardev socket,id
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577386 root 0 5.7 2 9.7 /usr/bin/kvm -id 109 -name opnsense-dhcp-for-2p5Gbit,debug-threads=on -no-shutdown -chardev socke
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68 root 5 3.8 0 0.0 [ksmd]
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222982 root 0 2.6 1 6.9 /usr/bin/kvm -id 104 -name pfsense-272-dhcp-for-HO,debug-threads=on -no-shutdown -chardev socket,
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1451426 dave 0 2.0 1 0.0 htop -d 22
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2326 root 0 1.4 3 0.3 pvestatd
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1631891 root 0 0.4 1 0.3 pvedaemon worker
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2327 root 0 0.4 2 0.3 pve-firewall
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1641323 root 0 0.3 3 0.0 -bash
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1633442 root 0 0.3 0 0.2 pvedaemon worker
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67 root 0 0.3 4 0.0 [kcompactd0]
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129 root 0 0.3 1 0.0 [kswapd0]
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1633341 www-data 0 0.3 0 0.9 pveproxy worker
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1636452 www-data 0 0.2 3 0.8 pveproxy worker
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1633109 www-data 0 0.2 0 0.9 pveproxy worker
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1641322 root 0 0.1 1 0.0 tmux
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3189 root 0 0.1 7 0.0 /usr/bin/top -d 15
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1635124 root 0 0.1 6 0.8 /usr/bin/perl /usr/sbin/qm vncproxy 112
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1627107 root -20 0.1 3 0.0 [zvol]
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total used free shared buff/cache available
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Mem: 16344068 13051672 1248048 39920 2560400 3292396
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Swap: 2097148 682412 1414736
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1634464 1634537 1634538 1634539
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+ taskset -p 1634464
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pid 1634464's current affinity mask: c0
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+ taskset -cp 6,7 1634464
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pid 1634464's current affinity list: 6,7
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pid 1634464's new affinity list: 6,7
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+ taskset -cp 7 1634537
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pid 1634537's current affinity list: 7
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pid 1634537's new affinity list: 7
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+ taskset -cp 6 1634538
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pid 1634538's current affinity list: 6
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pid 1634538's new affinity list: 6
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+ let penultcpu=6-1
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+ '[' 1634539 = '' ']'
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+ taskset -cp 5 1634539
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pid 1634539's current affinity list: 5
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pid 1634539's new affinity list: 5
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+ let penultcpu=5-1
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+ '[' '' = '' ']'
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+ let penultcpu=4-1
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+ '[' '' = '' ']'
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+ let penultcpu=3-1
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+ '[' '' = '' ']'
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+ set +x
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Monitor changes with htop
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