Hi,
I have 2 supermicro servers with latest Proxmox 3.0 installed on both: N1 - H8DMR-82 (nVidia chipset, AMD CPU) and N2 - X8SIE (Intel chipset, Xeon CPU).
While N2 works great, N1 has some performance issues: top shows ksoftirqd eats cpu. I booted N1 in a single user mode and simulated the load with dd:
Running the same command on N2 shows all's good (no VMs were stopped):
The only explanation I'm thinking of is the sata controller module: N1 uses sata_nv, N2 uses ahci.
Can somebody give me an advice how to eliminate the issue?
I have 2 supermicro servers with latest Proxmox 3.0 installed on both: N1 - H8DMR-82 (nVidia chipset, AMD CPU) and N2 - X8SIE (Intel chipset, Xeon CPU).
While N2 works great, N1 has some performance issues: top shows ksoftirqd eats cpu. I booted N1 in a single user mode and simulated the load with dd:
Code:
# dd if=/dev/zero of=./testf bs=1M oflag=direct
^C1080+0 records in
1080+0 records out
1132462080 bytes (1.1 GB) copied, 7.8643 s, 144 MB/sCode:
top - 15:13:12 up 44 min, 2 users, load average: 0.08, 0.02, 0.01
Tasks: 136 total, 2 running, 134 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 3.2 sy, 0.0 ni, 75.1 id, 21.6 wa, 0.1 hi, 0.0 si, 0.0 st
KiB Mem: 8171412 total, 199068 used, 7972344 free, 11980 buffers
KiB Swap: 0 total, 0 used, 0 free, 97296 cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
13 root 20 0 0 0 0 S 34.2 0.0 0:32.90 ksoftirqd/2
5795 root 20 0 10852 1720 572 R 10.6 0.0 0:00.53 dd
346 root 20 0 0 0 0 S 3.3 0.0 0:02.87 md10_raid10Code:
# dd if=/dev/zero of=./testf bs=1M oflag=direct
^C1924+0 records in
1924+0 records out
2017460224 bytes (2.0 GB) copied, 8.82385 s, 229 MB/sCode:
top - 14:49:47 up 12 days, 3:48, 2 users, load average: 0.08, 0.02, 0.01
Tasks: 250 total, 1 running, 249 sleeping, 0 stopped, 0 zombie
%Cpu(s): 2.4 us, 3.2 sy, 0.0 ni, 83.1 id, 11.3 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 32936236 total, 32739768 used, 196468 free, 30232 buffers
KiB Swap: 0 total, 0 used, 0 free, 25161156 cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4180 root 20 0 2381m 2.0g 1500 S 25.3 6.4 4435:55 kvm
394205 root 20 0 3376m 3.0g 1528 S 12.6 9.4 1539:59 kvm
398769 root 20 0 1351m 1.0g 1448 S 6.3 3.2 862:56.27 kvm
541390 root 20 0 23260 1760 1180 R 6.3 0.0 0:00.28 top
541416 root 20 0 10852 1732 588 D 6.3 0.0 0:00.49 ddCan somebody give me an advice how to eliminate the issue?