Доброе время суток уважаемые Гуру. Появилась проблема на серверах доступа под управлением FreeBSD 7.0 и 7.1 происходит постепенная или рывками утечка оперативной памяти после чего у него отказывает сетевая подсистема, т.е. полностью перестает работать сеть. Бывает это на разных сегментных серверах, т.е. может глючить по 2 раза в сутки целую неделю а потом простоять а аптайме не менее 3х месяцев и так может случится с любым из сегментных маршрутизаторов. Down Up интерфейса не лечит, лечит только ребут системы. Подставил костыль, скрипт пингует раз в минуту стабильный сервер если пинга нет, то скрипт перезагружает сервер ибо в противном случае приходилось дергать вручную. Данные сервера выполняют следующий функционал:
1. доступ в сеть абонентов при помощи VLAN;
2. доступ абонентов в сеть при помощи РРРоЕ на базе mpd5.1 до 200 сессий, авторизация происходит статически из файла mpd.secret т.к. Radius-сервер находится далеко;
3. автоматическая блокировка абонентов-должников при помощи ipfw, т.е. на каждого абонента для его статического IP-адреса на вот таком примере:
deny ip from 10.10.57.185 to any
deny ip from any to 10.10.57.185
данные правила динамически выгружает биллинг на сервер.
4. статическая маршрутизация между серверами доступа около 120 маршрутов и дефолт роут смотрящий на пограничный маршрутизатор, трафик не шейпируем.
5. прокачка Интернет и локального межсегментного трафика.
В сегментную сеть смотрит 2 гигабитных интерфейса а в межсегментную сеть один гигабитный интерфейс. Коммутируемое оборудование используем D-Link DGS-3426. 5 коммутаторов DGS-3426 образуют кольцо от них уже идут ответвления. На кольцевых коммутаторах настроен RSTP который отлично работает.
Ниже иллюстрирую лог загрузки ядра системы:
May 12 16:31:21 Lnk-GW6 kernel: Copyright (c) 1992-2009 The FreeBSD Project.
May 12 16:31:21 Lnk-GW6 kernel: Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
May 12 16:31:21 Lnk-GW6 kernel: The Regents of the University of California. All rights reserved.
May 12 16:31:21 Lnk-GW6 kernel: FreeBSD is a registered trademark of The FreeBSD Foundation.
May 12 16:31:21 Lnk-GW6 kernel: FreeBSD 7.1-RELEASE #1: Tue Mar  9 22:49:24 KRAT 2010
May 12 16:31:21 Lnk-GW6 kernel: alex@Lnk-GW6
:/usr/obj/usr/src/sys/GW6LNK
May 12 16:31:21 Lnk-GW6 kernel: Timecounter "i8254" frequency 1193182 Hz quality 0
May 12 16:31:21 Lnk-GW6 kernel: CPU: Intel(R) Xeon(R) CPU           E5450  @ 3.00GHz (3009.97-MHz 686-class CPU)
May 12 16:31:21 Lnk-GW6 kernel: Origin = "GenuineIntel"  Id = 0x1067a  Stepping = 10
May 12 16:31:21 Lnk-GW6 kernel: Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
May 12 16:31:21 Lnk-GW6 kernel: Features2=0x40ce3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1,<b26>>
May 12 16:31:22 Lnk-GW6 kernel: AMD Features=0x20100000<NX,LM>
May 12 16:31:22 Lnk-GW6 kernel: AMD Features2=0x1<LAHF>
May 12 16:31:22 Lnk-GW6 kernel: Cores per package: 4
May 12 16:31:22 Lnk-GW6 kernel: real memory  = 2680160256 (2556 MB)
May 12 16:31:22 Lnk-GW6 kernel: avail memory = 2613112832 (2492 MB)
May 12 16:31:22 Lnk-GW6 kernel: ACPI APIC Table: <INTEL  S5000VSA>
May 12 16:31:22 Lnk-GW6 kernel: FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
May 12 16:31:22 Lnk-GW6 kernel: cpu0 (BSP): APIC ID:  0
May 12 16:31:22 Lnk-GW6 kernel: cpu1 (AP): APIC ID:  1
May 12 16:31:22 Lnk-GW6 kernel: cpu2 (AP): APIC ID:  2
May 12 16:31:22 Lnk-GW6 kernel: cpu3 (AP): APIC ID:  3
May 12 16:31:22 Lnk-GW6 kernel: cpu4 (AP): APIC ID:  4
May 12 16:31:22 Lnk-GW6 kernel: cpu5 (AP): APIC ID:  5
May 12 16:31:22 Lnk-GW6 kernel: cpu6 (AP): APIC ID:  6
May 12 16:31:22 Lnk-GW6 kernel: cpu7 (AP): APIC ID:  7
May 12 16:31:22 Lnk-GW6 kernel: ioapic0 <Version 2.0> irqs 0-23 on motherboard
May 12 16:31:22 Lnk-GW6 kernel: ioapic1 <Version 2.0> irqs 24-47 on motherboard
May 12 16:31:22 Lnk-GW6 kernel: lapic0: Forcing LINT1 to edge trigger
May 12 16:31:22 Lnk-GW6 kernel: kbd1 at kbdmux0
May 12 16:31:22 Lnk-GW6 kernel: ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
May 12 16:31:22 Lnk-GW6 kernel: acpi0: <INTEL S5000VSA> on motherboard
May 12 16:31:22 Lnk-GW6 kernel: acpi0: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: acpi0: Power Button (fixed)
May 12 16:31:22 Lnk-GW6 kernel: acpi0: reservation of 0, a0000 (3) failed
May 12 16:31:22 Lnk-GW6 kernel: Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
May 12 16:31:22 Lnk-GW6 kernel: acpi_timer0: <24-bit timer at 3.579545MHz> port 0x408-0x40b on acpi0
May 12 16:31:22 Lnk-GW6 kernel: acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
May 12 16:31:22 Lnk-GW6 kernel: Timecounter "HPET" frequency 14318180 Hz quality 900
May 12 16:31:22 Lnk-GW6 kernel: acpi_button0: <Sleep Button> on acpi0
May 12 16:31:22 Lnk-GW6 kernel: pcib0: <ACPI Host-PCI bridge> port 0xca2,0xca3,0xcf8-0xcff on acpi0
May 12 16:31:22 Lnk-GW6 kernel: pci0: <ACPI PCI bus> on pcib0
May 12 16:31:22 Lnk-GW6 kernel: pcib1: <ACPI PCI-PCI bridge> at device 2.0 on pci0
May 12 16:31:22 Lnk-GW6 kernel: pci1: <ACPI PCI bus> on pcib1
May 12 16:31:22 Lnk-GW6 kernel: pcib2: <ACPI PCI-PCI bridge> irq 16 at device 0.0 on pci1
May 12 16:31:22 Lnk-GW6 kernel: pci2: <ACPI PCI bus> on pcib2
May 12 16:31:22 Lnk-GW6 kernel: pcib3: <ACPI PCI-PCI bridge> irq 16 at device 0.0 on pci2
May 12 16:31:22 Lnk-GW6 kernel: pci3: <ACPI PCI bus> on pcib3
May 12 16:31:22 Lnk-GW6 kernel: em0: <Intel(R) PRO/1000 Network Connection 6.9.6> port 0x3020-0x303f mem 0xb8c60000-0xb8c7ffff,0xb8c40000-0xb8c5ffff irq 16 at device 0.0 on pci3
May 12 16:31:22 Lnk-GW6 kernel: em0: Using MSI interrupt
May 12 16:31:22 Lnk-GW6 kernel: em0: [FILTER]
May 12 16:31:22 Lnk-GW6 kernel: em0: Ethernet address: 00:15:17:95:12:c0
May 12 16:31:22 Lnk-GW6 kernel: em1: <Intel(R) PRO/1000 Network Connection 6.9.6> port 0x3000-0x301f mem 0xb8c20000-0xb8c3ffff,0xb8c00000-0xb8c1ffff irq 17 at device 0.1 on pci3
May 12 16:31:22 Lnk-GW6 kernel: em1: Using MSI interrupt
May 12 16:31:22 Lnk-GW6 kernel: em1: [FILTER]
May 12 16:31:22 Lnk-GW6 kernel: em1: Ethernet address: 00:15:17:95:12:c1
May 12 16:31:22 Lnk-GW6 kernel: pcib4: <ACPI PCI-PCI bridge> irq 17 at device 1.0 on pci2
May 12 16:31:22 Lnk-GW6 kernel: pci4: <ACPI PCI bus> on pcib4
May 12 16:31:22 Lnk-GW6 kernel: pcib5: <PCI-PCI bridge> at device 0.0 on pci4
May 12 16:31:22 Lnk-GW6 kernel: pci5: <PCI bus> on pcib5
May 12 16:31:22 Lnk-GW6 kernel: aac0: <Adaptec RAID 3405> mem 0xb8a00000-0xb8bfffff irq 19 at device 14.0 on pci5
May 12 16:31:22 Lnk-GW6 kernel: aac0: Enable Raw I/O
May 12 16:31:22 Lnk-GW6 kernel: aac0: Enable 64-bit array
May 12 16:31:22 Lnk-GW6 kernel: aac0: New comm. interface enabled
May 12 16:31:22 Lnk-GW6 kernel: aac0: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: aac0: Adaptec 3405, aac driver 2.0.0-1
May 12 16:31:22 Lnk-GW6 kernel: aacp0: <SCSI Passthrough Bus> on aac0
May 12 16:31:22 Lnk-GW6 kernel: aacp1: <SCSI Passthrough Bus> on aac0
May 12 16:31:22 Lnk-GW6 kernel: aacp2: <SCSI Passthrough Bus> on aac0
May 12 16:31:22 Lnk-GW6 kernel: pcib6: <PCI-PCI bridge> at device 0.2 on pci4
May 12 16:31:22 Lnk-GW6 kernel: pci6: <PCI bus> on pcib6
May 12 16:31:22 Lnk-GW6 kernel: pcib7: <ACPI PCI-PCI bridge> irq 18 at device 2.0 on pci2
May 12 16:31:22 Lnk-GW6 kernel: pci7: <ACPI PCI bus> on pcib7
May 12 16:31:22 Lnk-GW6 kernel: em2: <Intel(R) PRO/1000 Network Connection 6.9.6> port 0x2020-0x203f mem 0xb8820000-0xb883ffff,0xb8400000-0xb87fffff irq 18 at device 0.0 on pci7
May 12 16:31:22 Lnk-GW6 kernel: em2: Using MSI interrupt
May 12 16:31:22 Lnk-GW6 kernel: em2: [FILTER]
May 12 16:31:22 Lnk-GW6 kernel: em2: Ethernet address: 00:15:17:61:4a:dc
May 12 16:31:22 Lnk-GW6 kernel: em3: <Intel(R) PRO/1000 Network Connection 6.9.6> port 0x2000-0x201f mem 0xb8800000-0xb881ffff,0xb8000000-0xb83fffff irq 19 at device 0.1 on pci7
May 12 16:31:22 Lnk-GW6 kernel: em3: Using MSI interrupt
May 12 16:31:22 Lnk-GW6 kernel: em3: [FILTER]
May 12 16:31:22 Lnk-GW6 kernel: em3: Ethernet address: 00:15:17:61:4a:dd
May 12 16:31:22 Lnk-GW6 kernel: pcib8: <ACPI PCI-PCI bridge> at device 0.3 on pci1
May 12 16:31:22 Lnk-GW6 kernel: pci8: <ACPI PCI bus> on pcib8
May 12 16:31:22 Lnk-GW6 kernel: pcib9: <PCI-PCI bridge> at device 3.0 on pci0
May 12 16:31:22 Lnk-GW6 kernel: pci9: <PCI bus> on pcib9
May 12 16:31:22 Lnk-GW6 kernel: pci0: <base peripheral> at device 8.0 (no driver attached)
May 12 16:31:22 Lnk-GW6 kernel: pcib10: <ACPI PCI-PCI bridge> irq 16 at device 28.0 on pci0
May 12 16:31:22 Lnk-GW6 kernel: pci10: <ACPI PCI bus> on pcib10
May 12 16:31:22 Lnk-GW6 kernel: uhci0: <Intel 631XESB/632XESB/3100 USB controller USB-1> port 0x4080-0x409f irq 23 at device 29.0 on pci0
May 12 16:31:22 Lnk-GW6 kernel: uhci0: [GIANT-LOCKED]
May 12 16:31:22 Lnk-GW6 kernel: uhci0: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: usb0: <Intel 631XESB/632XESB/3100 USB controller USB-1> on uhci0
May 12 16:31:22 Lnk-GW6 kernel: usb0: USB revision 1.0
May 12 16:31:22 Lnk-GW6 kernel: uhub0: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0
May 12 16:31:22 Lnk-GW6 kernel: uhub0: 2 ports with 2 removable, self powered
May 12 16:31:22 Lnk-GW6 kernel: uhci1: <Intel 631XESB/632XESB/3100 USB controller USB-2> port 0x4060-0x407f irq 22 at device 29.1 on pci0
May 12 16:31:22 Lnk-GW6 kernel: uhci1: [GIANT-LOCKED]
May 12 16:31:22 Lnk-GW6 kernel: uhci1: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: usb1: <Intel 631XESB/632XESB/3100 USB controller USB-2> on uhci1
May 12 16:31:22 Lnk-GW6 kernel: usb1: USB revision 1.0
May 12 16:31:22 Lnk-GW6 kernel: uhub1: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb1
May 12 16:31:22 Lnk-GW6 kernel: uhub1: 2 ports with 2 removable, self powered
May 12 16:31:22 Lnk-GW6 kernel: uhci2: <Intel 631XESB/632XESB/3100 USB controller USB-3> port 0x4040-0x405f irq 23 at device 29.2 on pci0
May 12 16:31:22 Lnk-GW6 kernel: uhci2: [GIANT-LOCKED]
May 12 16:31:22 Lnk-GW6 kernel: uhci2: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: usb2: <Intel 631XESB/632XESB/3100 USB controller USB-3> on uhci2
May 12 16:31:22 Lnk-GW6 kernel: usb2: USB revision 1.0
May 12 16:31:22 Lnk-GW6 kernel: uhub2: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb2
May 12 16:31:22 Lnk-GW6 kernel: uhub2: 2 ports with 2 removable, self powered
May 12 16:31:22 Lnk-GW6 kernel: uhci3: <Intel 631XESB/632XESB/3100 USB controller USB-4> port 0x4020-0x403f irq 22 at device 29.3 on pci0
May 12 16:31:22 Lnk-GW6 kernel: uhci3: [GIANT-LOCKED]
May 12 16:31:22 Lnk-GW6 kernel: uhci3: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: usb3: <Intel 631XESB/632XESB/3100 USB controller USB-4> on uhci3
May 12 16:31:22 Lnk-GW6 kernel: usb3: USB revision 1.0
May 12 16:31:22 Lnk-GW6 kernel: uhub3: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb3
May 12 16:31:22 Lnk-GW6 kernel: uhub3: 2 ports with 2 removable, self powered
May 12 16:31:22 Lnk-GW6 kernel: ehci0: <Intel 63XXESB USB 2.0 controller> mem 0xb8f00400-0xb8f007ff irq 23 at device 29.7 on pci0
May 12 16:31:22 Lnk-GW6 kernel: ehci0: [GIANT-LOCKED]
May 12 16:31:22 Lnk-GW6 kernel: ehci0: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: usb4: EHCI version 1.0
May 12 16:31:22 Lnk-GW6 kernel: usb4: companion controllers, 2 ports each: usb0 usb1 usb2 usb3
May 12 16:31:22 Lnk-GW6 kernel: usb4: <Intel 63XXESB USB 2.0 controller> on ehci0
May 12 16:31:22 Lnk-GW6 kernel: usb4: USB revision 2.0
May 12 16:31:22 Lnk-GW6 kernel: uhub4: <Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb4
May 12 16:31:22 Lnk-GW6 kernel: uhub4: 8 ports with 8 removable, self powered
May 12 16:31:22 Lnk-GW6 kernel: pcib11: <ACPI PCI-PCI bridge> at device 30.0 on pci0
May 12 16:31:22 Lnk-GW6 kernel: pci11: <ACPI PCI bus> on pcib11
May 12 16:31:22 Lnk-GW6 kernel: vgapci0: <VGA-compatible display> port 0x1000-0x10ff mem 0xb0000000-0xb7ffffff,0xb8e00000-0xb8e0ffff irq 17 at device 12.0 on pci11
May 12 16:31:22 Lnk-GW6 kernel: isab0: <PCI-ISA bridge> at device 31.0 on pci0
May 12 16:31:22 Lnk-GW6 kernel: isa0: <ISA bus> on isab0
May 12 16:31:22 Lnk-GW6 kernel: atapci0: <Intel 63XXESB2 UDMA100 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x40b0-0x40bf irq 20 at device 31.1 on pci0
May 12 16:31:22 Lnk-GW6 kernel: ata0: <ATA channel 0> on atapci0
May 12 16:31:22 Lnk-GW6 kernel: ata0: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: ata1: <ATA channel 1> on atapci0
May 12 16:31:22 Lnk-GW6 kernel: ata1: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: atapci1: <Intel 63XXESB2 SATA300 controller> port 0x40c8-0x40cf,0x40e4-0x40e7,0x40c0-0x40c7,0x40e0-0x40e3,0x40a0-0x40af mem 0xb8f00000-0xb8f003ff irq 20 at device 31.2 on pci0
May 12 16:31:22 Lnk-GW6 kernel: atapci1: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: ata2: <ATA channel 0> on atapci1
May 12 16:31:22 Lnk-GW6 kernel: ata2: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: ata3: <ATA channel 1> on atapci1
May 12 16:31:22 Lnk-GW6 kernel: ata3: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
May 12 16:31:22 Lnk-GW6 kernel: atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
May 12 16:31:22 Lnk-GW6 kernel: atkbd0: <AT Keyboard> irq 1 on atkbdc0
May 12 16:31:22 Lnk-GW6 kernel: kbd0 at atkbd0
May 12 16:31:22 Lnk-GW6 kernel: atkbd0: [GIANT-LOCKED]
May 12 16:31:22 Lnk-GW6 kernel: atkbd0: [ITHREAD]
May 12 16:31:22 Lnk-GW6 kernel: sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
May 12 16:31:22 Lnk-GW6 kernel: sio0: type 16550A
May 12 16:31:22 Lnk-GW6 kernel: sio0: [FILTER]
May 12 16:31:22 Lnk-GW6 kernel: sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
May 12 16:31:22 Lnk-GW6 kernel: sio1: type 16550A
May 12 16:31:22 Lnk-GW6 kernel: sio1: [FILTER]
May 12 16:31:22 Lnk-GW6 kernel: cpu0: <ACPI CPU> on acpi0
May 12 16:31:22 Lnk-GW6 kernel: est0: <Enhanced SpeedStep Frequency Control> on cpu0
May 12 16:31:22 Lnk-GW6 kernel: p4tcc0: <CPU Frequency Thermal Control> on cpu0
May 12 16:31:22 Lnk-GW6 kernel: cpu1: <ACPI CPU> on acpi0
May 12 16:31:22 Lnk-GW6 kernel: est1: <Enhanced SpeedStep Frequency Control> on cpu1
May 12 16:31:22 Lnk-GW6 kernel: p4tcc1: <CPU Frequency Thermal Control> on cpu1
May 12 16:31:22 Lnk-GW6 kernel: cpu2: <ACPI CPU> on acpi0
May 12 16:31:22 Lnk-GW6 kernel: est2: <Enhanced SpeedStep Frequency Control> on cpu2
May 12 16:31:22 Lnk-GW6 kernel: p4tcc2: <CPU Frequency Thermal Control> on cpu2
May 12 16:31:22 Lnk-GW6 kernel: cpu3: <ACPI CPU> on acpi0
May 12 16:31:22 Lnk-GW6 kernel: est3: <Enhanced SpeedStep Frequency Control> on cpu3
May 12 16:31:22 Lnk-GW6 kernel: p4tcc3: <CPU Frequency Thermal Control> on cpu3
May 12 16:31:22 Lnk-GW6 kernel: cpu4: <ACPI CPU> on acpi0
May 12 16:31:22 Lnk-GW6 kernel: est4: <Enhanced SpeedStep Frequency Control> on cpu4
May 12 16:31:22 Lnk-GW6 kernel: p4tcc4: <CPU Frequency Thermal Control> on cpu4
May 12 16:31:22 Lnk-GW6 kernel: cpu5: <ACPI CPU> on acpi0
May 12 16:31:22 Lnk-GW6 kernel: est5: <Enhanced SpeedStep Frequency Control> on cpu5
May 12 16:31:22 Lnk-GW6 kernel: p4tcc5: <CPU Frequency Thermal Control> on cpu5
May 12 16:31:22 Lnk-GW6 kernel: cpu6: <ACPI CPU> on acpi0
May 12 16:31:22 Lnk-GW6 kernel: est6: <Enhanced SpeedStep Frequency Control> on cpu6
May 12 16:31:22 Lnk-GW6 kernel: p4tcc6: <CPU Frequency Thermal Control> on cpu6
May 12 16:31:22 Lnk-GW6 kernel: cpu7: <ACPI CPU> on acpi0
May 12 16:31:22 Lnk-GW6 kernel: est7: <Enhanced SpeedStep Frequency Control> on cpu7
May 12 16:31:22 Lnk-GW6 kernel: p4tcc7: <CPU Frequency Thermal Control> on cpu7
May 12 16:31:22 Lnk-GW6 kernel: pmtimer0 on isa0
May 12 16:31:22 Lnk-GW6 kernel: orm0: <ISA Option ROMs> at iomem 0xc0000-0xc8fff,0xc9000-0xcefff,0xcf000-0xcffff,0xd0000-0xd0fff pnpid ORM0000 on isa0
May 12 16:31:22 Lnk-GW6 kernel: ppc0: parallel port not found.
May 12 16:31:22 Lnk-GW6 kernel: sc0: <System console> at flags 0x100 on isa0
May 12 16:31:22 Lnk-GW6 kernel: sc0: VGA <16 virtual consoles, flags=0x300>
May 12 16:31:22 Lnk-GW6 kernel: vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
May 12 16:31:22 Lnk-GW6 kernel: Timecounters tick every 0.833 msec
May 12 16:31:22 Lnk-GW6 kernel: ipfw2 (+ipv6) initialized, divert enabled, nat loadable, rule-based forwarding enabled, default to accept, logging disabled
May 12 16:31:22 Lnk-GW6 kernel: acd0: DVDROM <TSSTcorpDVD-ROM SH-D162D/SB01> at ata0-master UDMA33
May 12 16:31:22 Lnk-GW6 kernel: aacd0: <RAID 0/1> on aac0
May 12 16:31:22 Lnk-GW6 kernel: aacd0: 478600MB (980172800 sectors)
May 12 16:31:22 Lnk-GW6 kernel: lapic1: Forcing LINT1 to edge trigger
May 12 16:31:22 Lnk-GW6 kernel: SMP: AP CPU #1 Launched!
May 12 16:31:22 Lnk-GW6 kernel: lapic6: Forcing LINT1 to edge trigger
May 12 16:31:22 Lnk-GW6 kernel: SMP: AP CPU #6 Launched!
May 12 16:31:22 Lnk-GW6 kernel: lapic3: Forcing LINT1 to edge trigger
May 12 16:31:22 Lnk-GW6 kernel: SMP: AP CPU #3 Launched!
May 12 16:31:22 Lnk-GW6 kernel: lapic2: Forcing LINT1 to edge trigger
May 12 16:31:22 Lnk-GW6 kernel: SMP: AP CPU #2 Launched!
May 12 16:31:22 Lnk-GW6 kernel: lapic7: Forcing LINT1 to edge trigger
May 12 16:31:22 Lnk-GW6 kernel: SMP: AP CPU #7 Launched!
May 12 16:31:22 Lnk-GW6 kernel: lapic5: Forcing LINT1 to edge trigger
May 12 16:31:22 Lnk-GW6 kernel: SMP: AP CPU #5 Launched!
May 12 16:31:22 Lnk-GW6 kernel: lapic4: Forcing LINT1 to edge trigger
May 12 16:31:22 Lnk-GW6 kernel: SMP: AP CPU #4 Launched!
May 12 16:31:22 Lnk-GW6 kernel: Trying to mount root from ufs:/dev/aacd0s1a
May 12 16:31:22 Lnk-GW6 savecore: no dumps found
May 12 16:31:22 Lnk-GW6 kernel: em3: link state changed to DOWN
May 12 16:31:24 Lnk-GW6 kernel: em2: link state changed to UP
May 12 16:31:24 Lnk-GW6 kernel: vlan612: link state changed to UP
May 12 16:31:24 Lnk-GW6 kernel: vlan613: link state changed to UP
May 12 16:31:24 Lnk-GW6 kernel: vlan614: link state changed to UP
May 12 16:31:24 Lnk-GW6 kernel: vlan615: link state changed to UP
May 12 16:31:24 Lnk-GW6 kernel: vlan611: link state changed to UP
May 12 16:31:24 Lnk-GW6 kernel: vlan616: link state changed to UP
May 12 16:31:24 Lnk-GW6 kernel: vlan617: link state changed to UP
May 12 16:31:24 Lnk-GW6 kernel: vlan600: link state changed to UP
May 12 16:31:24 Lnk-GW6 kernel: em0: link state changed to UP
May 12 16:31:25 Lnk-GW6 kernel: em3: link state changed to UP
May 12 16:34:19 Lnk-GW6 kernel: arp: 172.2.60.42 is on vlan600 but got reply from 00:21:91:13:25:f6 on em2
May 12 16:34:19 Lnk-GW6 kernel: arp: 172.2.60.63 moved from 00:21:91:13:25:c9 to 00:21:91:13:26:23 on vlan600
May 12 16:34:19 Lnk-GW6 kernel: arp: 172.2.60.63 moved from 00:21:91:13:26:23 to 00:21:91:13:25:c9 on vlan600
May 12 16:34:19 Lnk-GW6 kernel: arp: 172.2.60.37 is on vlan600 but got reply from 00:21:91:f4:a0:f8 on em2

Далее представлю Вам вывод команды netstat –m

# netstat -m
1058/3307/4365 mbufs in use (current/cache/total)
867/1849/2716/33792 mbuf clusters in use (current/cache/total/max)
867/1693 mbuf+clusters out of packet secondary zone in use (current/cache)
0/135/135/16896 4k (page size) jumbo clusters in use (current/cache/total/max)
0/0/0/8448 9k jumbo clusters in use (current/cache/total/max)
0/0/0/4224 16k jumbo clusters in use (current/cache/total/max)
1998K/5064K/7063K bytes allocated to network (current/cache/total)
0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
0/0/0 requests for jumbo clusters denied (4k/9k/16k)
0/6/8704 sfbufs in use (current/peak/max)
0 requests for sfbufs denied
0 requests for sfbufs delayed
0 requests for I/O initiated by sendfile
0 calls to protocol drain routines

Вывод команды top –S
last pid: 16962;  load averages:  0.44,  0.40,  0.32                                                                                                                                                                 up 0+21:26:11  14:05:49
96 processes:  9 running, 70 sleeping, 1 stopped, 16 waiting
CPU:  0.0% user,  0.0% nice,  3.7% system,  0.2% interrupt, 96.1% idle
Mem: 20M Active, 346M Inact, 171M Wired, 136K Cache, 112M Buf, 1959M Free
Swap: 16G Total, 16G Free

  PID USERNAME   THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
   12 root         1 171 ki31     0K     8K CPU6   6  21.4H 100.00% idle: cpu6
   15 root         1 171 ki31     0K     8K CPU3   3  21.3H 100.00% idle: cpu3
   17 root         1 171 ki31     0K     8K RUN    1  21.2H 100.00% idle: cpu1
   11 root         1 171 ki31     0K     8K CPU7   7  21.2H 100.00% idle: cpu7
   18 root         1 171 ki31     0K     8K CPU0   0  21.2H 100.00% idle: cpu0
   14 root         1 171 ki31     0K     8K CPU4   4  20.8H 100.00% idle: cpu4
   13 root         1 171 ki31     0K     8K CPU5   5  20.0H 94.24% idle: cpu5
   16 root         1 171 ki31     0K     8K CPU2   2  19.6H 89.31% idle: cpu2
   29 root         1 -68    -     0K     8K -      2 103:59 17.04% em0 taskq
   34 root         1 -68    -     0K     8K -      5  85:30 11.62% em3 taskq
   33 root         1 -68    -     0K     8K -      4  33:20  1.66% em2 taskq
   20 root         1 -32    -     0K     8K WAIT   7  11:31  0.88% swi4: clock sio
   50 root         1 -68    -     0K     8K -      3   5:07  0.00% dummynet
  767 root         1  44    0  8808K  5096K select 1   4:05  0.00% snmpd
   22 root         1 -16    -     0K     8K -      1   2:47  0.00% yarrow
   56 root         1  20    -     0K     8K syncer 3   1:56  0.00% syncer

Очень сильно беспокоит 346M Inact потому что не зависимо от нагрузок на сервер этот параметр постоянно растет за сутки до этого данный параметр был 96М а параметр 1959M Free постоянно пропорционально убывает.

Опции ядра:

options         IPFIREWALL
options         IPFIREWALL_DEFAULT_TO_ACCEPT
options         IPFIREWALL_FORWARD
options         IPDIVERT
options         DUMMYNET

device          vlan

options         DEVICE_POLLING
options         HZ=1200

options         NETGRAPH
options         NETGRAPH_PPPOE
options         NETGRAPH_SOCKET

options         NETGRAPH_CISCO
options         NETGRAPH_ECHO
options         NETGRAPH_FRAME_RELAY
options         NETGRAPH_HOLE
options         NETGRAPH_KSOCKET
options         NETGRAPH_LMI
options         NETGRAPH_TTY

options         NETGRAPH_ASYNC
options         NETGRAPH_BPF
options         NETGRAPH_ETHER
options         NETGRAPH_IFACE
options         NETGRAPH_KSOCKET
options         NETGRAPH_L2TP
options         NETGRAPH_PPP
options         NETGRAPH_PPTPGRE
options         NETGRAPH_TEE
options         NETGRAPH_UI
options         NETGRAPH_VJC

Также немного оттюнил систему при этом выключил Polling ибо очень тормозило саму передачу трафик и пинг был огромный. Polling был отключен задолго до подобных глюков.
sysctl -w kern.polling.enable=0
sysctl -w kern.ipc.somaxconn=2048
sysctl -w net.inet.tcp.blackhole=1
sysctl -w net.inet.udp.blackhole=1
sysctl -w net.inet.icmp.drop_redirect=1
sysctl -w net.inet.ip.redirect=0
sysctl -w net.inet.icmp.log_redirect=1
sysctl -w net.inet6.ip6.redirect=0
#Netgraph PPPoE
sysctl -w net.graph.maxdgram=128000
sysctl -w net.graph.recvspace=128000

Подскажите куда копать? Куда девается память, как это увидеть?

P.S. Перед отказом сетевой подсистемы оперативной памяти судя по графикам израсходовано по разному, не более 6-й части.