#4 High loading on CPU

[Anonymous]

lv77@mail.ru

High loading on CPU in SMP system CentOS 5.x (2x2.4 Xeon CPU) dbhub
0.450 CVS 100 users on hub

verlihub - 3500 users

# top
top - 13:02:22 up 8 days, 21:58, 2 users, load average: 1.98, 2.06, 2.07
Tasks: 154 total, 1 running, 153 sleeping, 0 stopped, 0 zombie
Cpu(s): 13.6%us, 14.7%sy, 0.0%ni, 64.5%id, 2.2%wa, 0.2%hi, 4.5%si, 0.2%st
Mem: 1208268k total, 1196820k used, 11448k free, 21828k buffers
Swap: 399992k total, 246108k used, 153884k free, 150696k cached

PID USER VIRT RES SHR S %CPU %MEM TIME+ P SWAP COMMAND
9923 dbhub.fe 4040 592 448 S 95 0.0 5230:03 0 3448 /usr/local/bin/dbhub
6087 root 233m 224m 2032 S 30 19.1 3959:13 3 8664 /usr/local/bin/verlihub

Linux version 2.6.18-53.1.4.el5xen (mockbuild@builder6.centos.org) (gcc version 4.1.2 20070626 (Red Hat 4.1.2
-14)) #1 SMP Fri Nov 30 01:53:35 EST 2007

# lspci
00:00.0 Host bridge: Intel Corporation E7501 Memory Controller Hub (rev 01)
00:00.1 Class ff00: Intel Corporation E7500/E7501 Host RASUM Controller (rev 01)
00:03.0 PCI bridge: Intel Corporation E7500/E7501 Hub Interface C PCI-to-PCI Bridge (rev 01)
00:03.1 Class ff00: Intel Corporation E7500/E7501 Hub Interface C RASUM Controller (rev 01)
00:1d.0 USB Controller: Intel Corporation 82801CA/CAM USB Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801CA/CAM USB Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801CA/CAM USB Controller #3 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 42)
00:1f.0 ISA bridge: Intel Corporation 82801CA LPC Interface Controller (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801CA Ultra ATA Storage Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801CA/CAM SMBus Controller (rev 02)
01:0c.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
02:1c.0 PIC: Intel Corporation 82870P2 P64H2 I/OxAPIC (rev 04)
02:1d.0 PCI bridge: Intel Corporation 82870P2 P64H2 Hub PCI Bridge (rev 04)
02:1e.0 PIC: Intel Corporation 82870P2 P64H2 I/OxAPIC (rev 04)
02:1f.0 PCI bridge: Intel Corporation 82870P2 P64H2 Hub PCI Bridge (rev 04)
03:02.0 Fibre Channel: QLogic Corp. ISP2312-based 2Gb Fibre Channel to PCI-X HBA (rev 02)
04:02.0 RAID bus controller: Intel Corporation RAID Controller
04:05.0 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet Controller (Copper) (rev 01)
04:05.1 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet Controller (Copper) (rev 01)

[DarKRaveR]

Logged In: YES
user_id=1909489
Originator: NO

Well, this certainly is annoying but without some profiling information it is nearly impossible to help.

If you could provide profiling information we might know where to start looking.