У меня вселенская печаль. Не могу разобраться что с сервером и как это можно вылечить....
# uname -a
Linux vpn2 2.6.32.26-175.fc12.i686.PAE #1 SMP Wed Dec 1 21:45:50 UTC 2010 i686 i686 i386 GNU/Linux

Инетовский сервак, pptp соединения... 2 сетевухи....


# ethtool -i eth2

driver: igb
version: 3.2.9
firmware-version: 1.2-1
bus-info: 0000:04:00.0

ethtool -i eth3
driver: e1000
version: 7.3.21-k5-NAPI
firmware-version: N/A
bus-info: 0000:08:01.1

 cat /proc/interrupts
            CPU0       CPU1       CPU2       CPU3       CPU4       CPU5       CPU6       CPU7
   0:        424          0          0          0          0          0          0          0   IO-APIC-edge      timer
   1:          3          0          0          0          0          0          0          0   IO-APIC-edge      i8042
   8:          1          0          0          0          0          0          0          0   IO-APIC-edge      rtc0
   9:          0          0          0          0          0          0          0          0   IO-APIC-faste6i   acpi
  12:          4          0          0          0          0          0          0          0   IO-APIC-edge      i8042
  14:          0          0          0          0          0          0          0          0   IO-APIC-edge      ata_piix
  15:          0          0          0          0          0          0          0          0   IO-APIC-edge      ata_piix
  16:          0          0          0          0          0          0          0          0   IO-APIC-fasteoi   uhci_hcd:usb3, pata_marvell
  18:         46          0          0  679421109          0          0          0          0   IO-APIC-fasteoi   ehci_hcd:usb1, uhci_hcd:usb8, eth3
  19:       4345          0     493678          0          0          0          0          0   IO-APIC-fasteoi   uhci_hcd:usb5, uhci_hcd:usb7, mvsas
  20:          0          0          0          0          0          0          0          0   IO-APIC-fasteoi   ata_piix
  21:          0          0          0          0          0          0          0          0   IO-APIC-fasteoi   uhci_hcd:usb4
  23:          2          0          0          0          0          0          0          0   IO-APIC-fasteoi   ehci_hcd:usb2, uhci_hcd:usb6
  24:          3          0          0          0          0          0          0          0   IO-APIC-fasteoi   nouveau
  48:   |||||  0          0          0          0          0          0      8   0          0  DM3R_MSI-edge      dmar0
  56:   |      1          0          0          0          0          0      2.5 0          0   PCI-MSI-29 12.80 12.07
  57: ||      22          0          0          0          0 1051798337        2 0          0   PCI-MSI-ed2:00    eth2-TxRx-0
 NMI:          0          0          0          0          0          0          0          0   Non-maskable interrupts
 LOC:  || 065509  140143028  179375010  239613248   81203786   89752730   6053.233   45545368   Local timer interrupts
 SPU: |        0          0          0          0          0          0      5.5 0          0   Spurious interrupts
 PMI: ||       0          0          0          0          0          0      1.9 0          0   Performance monitoring interrupts
 PND:          0     2    0          0          0          0          0      0.0 0          0   Performance pending work
 RES:    1561686    5783838     972353     914494    2194631    1571633  1 1138836     964839   Rescheduling interrupts
 CAL:      21395      20207      21826      23884      21362      23088      20934      21448   Function call interrupts
 TLB:       4517       5311      10564       4103      32992      67404     127859      39274   TLB shootdowns
 TRM:          0          0          0          0          0          0          0          0   Thermal event interrupts
 THR:          0          0          0      5   0          88         0          0          0   Threshold APIC interrupts
 4637 root      20   0  2016   808   580 D  4.0  0.0  3:13.26 pptpd [10
 8794 root      20   0  2016   772   580 D  3.0  0.0  2:31.94 pptpd [10
12111 root      20   0  2016   816   580 D  2.0  0.0  6:51.92 pptpd [10
 2645 root      20   0  2016   756   580 S  1.0  0.0  2:22.37 pptpd [10
 3040 root      20   0  2016   804   580 D  1.0  0.0  9:10.60 pptpd [10
 9264 named    0       12316  7640  2016 S  0    0.2  0:03.58 /home/named/sbin/named -4 -c /etc/named.conf -u named -t /home/named
12160        293 0   0  293     80 293   D  0 293     8:13.36       293        293        293   Machine check polls
 7441          0         280  1048       S  0         5:36.03
16591          0                 0       S  0         9:10.23
 6974 root      20   0  2148   820   580 D  0.0  0.0  1:58.29 pptpd [10
 4006 root      20   0  2148   872   580 S  0.0  0.0  4:56.73 pptpd [10
 2966 root      22   2  2016   744   580 D  0.0  0.0  5:31.82 pptpd [10
13985@vpn2 ~]#                  16       S            1:40.00
 4661 root              2016   808   580 D         0  1:57.68 pptpd [10
 7372@vpn2 ~]# users     412  1188       D           38:39.02


# htop

  1  [|||                                                                    3.0%]     Tasks: 1286 total, 3 running
  2  [||||                                                                   4.9%]     Load average: 12.12 12.50 12.35
  3  [||||||                                                                 6.3%]     Uptime: 1 day, 00:42:21
  4  [|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%]
  5  [||                                                                     1.3%]
  6  [||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||          79.9%]
  7  [|                                                                      1.2%]
  8  [|                                                                      0.6%]
  Mem[|||||||||||||||||||||||||||||||||||||                            692/3015MB]
  Swp[                                                                   0/5071MB]

2

Проблему решил подкрутив options igb InterruptThrottleRate=1,1 IntMode=2,2 RSS=8,8