Hi When i ran the below command on vicidial dialer: [root@vicidial2 ~]# tethereal -i eth0 -a duration:300 -w sample.cap Capturing on eth0 320167 147496 packets dropped Machine configuration: Linux vicidial2.esselshyam.net 2.6.11-1.1369_FC4smp #1 SMP Thu Jun 2 23:08:39 EDT 2005 i686 i686 i386 GNU/Linux Machine Model: HP dx6120 MT http://h50025.www5.hp.com/hpcom/in_en/14_30_146_4492_44289.html RAM 1 GB HDD 80 GB SATA When i ran Acterna PVA-1000 on sample.cap it showed Max Jitter about 20 % and packet loss and echo as major cause of voice degradation. MQS was also less 2.59 where as it should be around 5.0. are packets being dropped at interface card or at kernel and how to correct it. on net i found: So "1000 packets captured" means, in Tethereal and tcpdump, "1000 packets read from libpcap and processed". What "100 packets dropped" means is that, of all the packets supplied to the kernel's packet capture mechanism that passed the filter, 100 of them were dropped because there wasn't enough room in the kernel's buffer for them; this means that packets aren't being read from the kernel's capture mechanism fast enough by the application. dmesg output: Linux version 2.6.11-1.1369_FC4smp (bhcompile@xxxxxxxxxxxxxxxxxxxxxxxxxx ) (gcc version 4.0.0 20050525 (Red Hat 4.0.0-9)) #1 SMP Thu Jun 2 23:08:39 EDT 2005 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009fc00 (usable) BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved) BIOS-e820: 00000000000e8000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000003f7e4000 (usable) BIOS-e820: 000000003f7e4000 - 0000000040000000 (reserved) BIOS-e820: 00000000d0000000 - 00000000e0000000 (reserved) BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved) 119MB HIGHMEM available. 896MB LOWMEM available. found SMP MP-table at 000fe700 Using x86 segment limits to approximate NX protection On node 0 totalpages: 260068 DMA zone: 4096 pages, LIFO batch:1 Normal zone: 225280 pages, LIFO batch:31 HighMem zone: 30692 pages, LIFO batch:15 DMI 2.3 present. Using APIC driver default ACPI: RSDP (v000 COMPAQ ) @ 0x000e9c10 ACPI: RSDT (v001 COMPAQ CPQ0968 0x20050405 0x00000000) @ 0x3f7f4040 ACPI: FADT (v001 COMPAQ GRANTSD 0x00000001 0x00000000) @ 0x3f7f40ec ACPI: SSDT (v001 COMPAQ PROJECT 0x00000001 MSFT 0x0100000e) @ 0x3f7f565a ACPI: MADT (v001 COMPAQ GRANTSD 0x00000001 0x00000000) @ 0x3f7f4160 ACPI: ASF! (v032 COMPAQ GRANTSD 0x00000001 0x00000000) @ 0x3f7f41c8 ACPI: MCFG (v001 COMPAQ GRANTSD 0x00000001 0x00000000) @ 0x3f7f422b ACPI: DSDT (v001 COMPAQ DSDT 0x00000001 MSFT 0x0100000e) @ 0x00000000 ACPI: PM-Timer IO Port: 0xf808 ACPI: Local APIC address 0xfee00000 ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled) Processor #0 15:4 APIC version 20 ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled) Processor #1 15:4 APIC version 20 ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1]) ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1]) ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0]) IOAPIC[0]: apic_id 1 already used, trying 2 IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23 ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) ACPI: IRQ0 used by override. ACPI: IRQ2 used by override. ACPI: IRQ9 used by override. Enabling APIC mode: Flat. Using 1 I/O APICs Using ACPI (MADT) for SMP configuration information Allocating PCI resources starting at 40000000 (gap: 40000000:90000000) Built 1 zonelists Kernel command line: ro root=LABEL=/ rhgb quiet mapped APIC to ffffd000 (fee00000) mapped IOAPIC to ffffc000 (fec00000) Initializing CPU#0 CPU 0 irqstacks, hard=c042a000 soft=c040a000 PID hash table entries: 4096 (order: 12, 65536 bytes) Detected 3191.307 MHz processor. Using pmtmr for high-res timesource Console: colour VGA+ 80x25 Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Memory: 1024416k/1040272k available (2084k kernel code, 14928k reserved, 769k data, 232k init, 122768k highmem) Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay loop... 6307.84 BogoMIPS (lpj=3153920) Security Framework v1.0.0 initialized SELinux: Initializing. SELinux: Starting in permissive mode selinux_register_security: Registering secondary module capability Capability LSM initialized as secondary Mount-cache hash table entries: 512 CPU: After generic identify, caps: bfebfbff 20000000 00000000 00000000 0000649d 00000000 00000000 CPU: After vendor identify, caps: bfebfbff 20000000 00000000 00000000 0000649d 00000000 00000000 monitor/mwait feature present. using mwait in idle threads. CPU: Trace cache: 12K uops, L1 D cache: 16K CPU: L2 cache: 2048K CPU: Physical Processor ID: 0 CPU: After all inits, caps: bfebf3ff 20000000 00000000 00000080 0000649d 00000000 00000000 Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. CPU0: Intel P4/Xeon Extended MCE MSRs (24) available CPU0: Thermal monitoring enabled Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Checking 'hlt' instruction... OK. CPU0: Intel(R) Pentium(R) 4 CPU 3.20GHz stepping 03 Booting processor 1/1 eip 3000 CPU 1 irqstacks, hard=c042b000 soft=c040b000 Initializing CPU#1 Calibrating delay loop... 6422.52 BogoMIPS (lpj=3211264) CPU: After generic identify, caps: bfebfbff 20000000 00000000 00000000 0000649d 00000000 00000000 CPU: After vendor identify, caps: bfebfbff 20000000 00000000 00000000 0000649d 00000000 00000000 monitor/mwait feature present. CPU: Trace cache: 12K uops, L1 D cache: 16K CPU: L2 cache: 2048K CPU: Physical Processor ID: 0 CPU: After all inits, caps: bfebf3ff 20000000 00000000 00000080 0000649d 00000000 00000000 Intel machine check architecture supported. Intel machine check reporting enabled on CPU#1. CPU1: Intel P4/Xeon Extended MCE MSRs (24) available CPU1: Thermal monitoring enabled CPU1: Intel(R) Pentium(R) 4 CPU 3.20GHz stepping 03 Total of 2 processors activated (12730.36 BogoMIPS). ENABLING IO-APIC IRQs ..TIMER: vector=0x31 pin1=2 pin2=-1 checking TSC synchronization across 2 CPUs: passed. softlockup thread 0 started up. Brought up 2 CPUs softlockup thread 1 started up. checking if image is initramfs... it is Freeing initrd memory: 1169k freed NET: Registered protocol family 16 PCI: PCI BIOS revision 2.20 entry at 0xec3b7, last bus=64 PCI: Using MMCONFIG mtrr: v2.0 (20020519) ACPI: Subsystem revision 20050309 ACPI: Interpreter enabled ACPI: Using IOAPIC for interrupt routing ACPI: PCI Root Bridge [PCI0] (0000:00) PCI: Probing PCI hardware (bus 00) Boot video device is 0000:00:02.0 PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1 PCI: Transparent bridge - 0000:00:1e.0 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCX1._PRT] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCX2._PRT] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB_._PRT] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 *10 11 14 15) ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 *5 6 7 10 11 14 15) ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 10 *11 14 15) ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 *5 6 7 10 11 14 15) ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 *11 14 15) ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 *10 11 14 15) ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 *11 14 15) ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 10 11 14 15) *0, disabled. Linux Plug and Play Support v0.97 (c) Adam Belay pnp: PnP ACPI init pnp: PnP ACPI: found 15 devices usbcore: registered new driver usbfs usbcore: registered new driver hub PCI: Using ACPI for IRQ routing PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report pnp: 00:0b: ioport range 0x400-0x41f has been reserved pnp: 00:0b: ioport range 0x420-0x43f has been reserved pnp: 00:0b: ioport range 0x440-0x45f has been reserved pnp: 00:0b: ioport range 0x460-0x47f could not be reserved pnp: 00:0b: ioport range 0x480-0x48f has been reserved pnp: 00:0b: ioport range 0xf800-0xf81f could not be reserved pnp: 00:0b: ioport range 0xf820-0xf83f could not be reserved pnp: 00:0b: ioport range 0xf840-0xf85f has been reserved pnp: 00:0c: ioport range 0x4d0-0x4d1 has been reserved apm: BIOS not found. audit: initializing netlink socket (disabled) audit(1145875179.134:1): initialized highmem bounce pool size: 64 pages Total HugeTLB memory allocated, 0 VFS: Disk quotas dquot_6.5.1 Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) SELinux: Registering netfilter hooks Initializing Cryptographic API ksign: Installing public key data Loading keyring - Added public key 42BD35A990375F72 - User ID: Red Hat, Inc. (Kernel Module GPG key) pci_hotplug: PCI Hot Plug PCI Core version: 0.5 PCI: Setting latency timer of device 0000:00:1c.0 to 64 pcie_portdrv_probe->Dev[2660:8086] has invalid IRQ. Check vendor BIOS assign_interrupt_mode Found MSI capability Allocate Port Service[pcie00] Allocate Port Service[pcie02] Allocate Port Service[pcie03] ACPI: PCI Interrupt 0000:00:1c.1[B] -> GSI 17 (level, low) -> IRQ 185 PCI: Setting latency timer of device 0000:00:1c.1 to 64 assign_interrupt_mode Found MSI capability Allocate Port Service[pcie00] Allocate Port Service[pcie02] Allocate Port Service[pcie03] ACPI: Processor [CPU0] (supports 8 throttling states) ACPI: Processor [CPU1] (supports 8 throttling states) isapnp: Scanning for PnP cards... isapnp: No Plug & Play device found Real Time Clock Driver v1.12 Linux agpgart interface v0.101 (c) Dave Jones agpgart: Detected an Intel 915G Chipset. agpgart: Detected 7932K stolen memory. agpgart: AGP aperture is 256M @ 0xe0000000 PNP: PS/2 Controller [PNP0303:KBD,PNP0f0e:PS2M] at 0x60,0x64 irq 1,12 serio: i8042 AUX port at 0x60,0x64 irq 12 serio: i8042 KBD port at 0x60,0x64 irq 1 Serial: 8250/16550 driver $Revision: 1.90 $ 76 ports, IRQ sharing enabled ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx ICH6: IDE controller at PCI slot 0000:00:1f.1 ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 17 (level, low) -> IRQ 185 ICH6: chipset revision 3 ICH6: not 100% native mode: will probe irqs later ide0: BM-DMA at 0x34e0-0x34e7, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0x34e8-0x34ef, BIOS settings: hdc:pio, hdd:pio Probing IDE interface ide0... hda: HL-DT-ST CD-ROM GCR-8523B, ATAPI CD/DVD-ROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Probing IDE interface ide1... Probing IDE interface ide1... hda: ATAPI 52X CD-ROM drive, 128kB Cache, DMA Uniform CD-ROM driver Revision: 3.20 ide-floppy driver 0.99.newide usbcore: registered new driver hiddev usbcore: registered new driver usbhid drivers/usb/input/hid-core.c: v2.01:USB HID core driver mice: PS/2 mouse device common for all mice md: md driver 0.90.1 MAX_MD_DEVS=256, MD_SB_DISKS=27 NET: Registered protocol family 2 IP: routing cache hash table of 4096 buckets, 64Kbytes TCP established hash table entries: 131072 (order: 9, 2097152 bytes) TCP bind hash table entries: 65536 (order: 7, 786432 bytes) TCP: Hash tables configured (established 131072 bind 65536) Initializing IPsec netlink socket NET: Registered protocol family 1 NET: Registered protocol family 17 ACPI wakeup devices: PCI0 PEG1 PCX1 PCX2 PCX4 HUB COM1 USB1 USB2 USB3 USB4 EUSB PBTN ACPI: (supports S0 S1 S3 S4 S5) CPU0 attaching sched-domain: domain 0: span 00000003 groups: 00000001 00000002 domain 1: span 00000003 groups: 00000003 CPU1 attaching sched-domain: domain 0: span 00000003 groups: 00000002 00000001 domain 1: span 00000003 groups: 00000003 Freeing unused kernel memory: 232k freed SCSI subsystem initialized libata version 1.10 loaded. ata_piix version 1.03 ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 201 PCI: Setting latency timer of device 0000:00:1f.2 to 64 ata1: SATA max UDMA/133 cmd 0x3818 ctl 0x3832 bmdma 0x34F0 irq 201 ata2: SATA max UDMA/133 cmd 0x3820 ctl 0x3836 bmdma 0x34F8 irq 201 ata1: dev 0 cfg 49:2f00 82:7069 83:7c01 84:4023 85:7069 86:3c01 87:4023 88:203f ata1: dev 0 ATA, max UDMA/100, 156301488 sectors: lba48 ata1: dev 0 configured for UDMA/100 scsi0 : ata_piix ATA: abnormal status 0x7F on port 0x3827 ata2: disabling port scsi1 : ata_piix Vendor: ATA Model: WDC WD800JD-60LU Rev: 07.0 Type: Direct-Access ANSI SCSI revision: 05 SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB) SCSI device sda: drive cache: write back SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB) SCSI device sda: drive cache: write back sda: sda1 sda2 Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. security: 3 users, 6 roles, 764 types, 87 bools security: 55 classes, 180131 rules SELinux: Completing initialization. SELinux: Setting up existing superblocks. SELinux: initialized (dev sda1, type ext3), uses xattr SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs SELinux: initialized (dev selinuxfs, type selinuxfs), uses genfs_contexts SELinux: initialized (dev mqueue, type mqueue), not configured for labeling SELinux: initialized (dev hugetlbfs, type hugetlbfs), not configured for labeling SELinux: initialized (dev devpts, type devpts), uses transition SIDs SELinux: initialized (dev eventpollfs, type eventpollfs), uses genfs_contexts SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs SELinux: initialized (dev futexfs, type futexfs), uses genfs_contexts SELinux: initialized (dev pipefs, type pipefs), uses task SIDs SELinux: initialized (dev sockfs, type sockfs), uses task SIDs SELinux: initialized (dev cpuset, type cpuset), not configured for labeling SELinux: initialized (dev proc, type proc), uses genfs_contexts SELinux: initialized (dev bdev, type bdev), uses genfs_contexts SELinux: initialized (dev rootfs, type rootfs), uses genfs_contexts SELinux: initialized (dev sysfs, type sysfs), uses genfs_contexts SELinux: initialized (dev usbfs, type usbfs), uses genfs_contexts Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 tg3.c:v3.29 (May 23, 2005) ACPI: PCI Interrupt 0000:40:00.0[A] -> GSI 17 (level, low) -> IRQ 185 PCI: Setting latency timer of device 0000:40:00.0 to 64 eth0: Tigon3 [partno(BCM95751) rev 4001 PHY(5750)] (PCIX:100MHz:32-bit) 10/100/1000BaseT Ethernet 00:0f:fe:25:5a:0a eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] Split[0] WireSpeed[1] TSOcap[1] eth0: dma_rwctrl[76180000] snd_intel8x0: Unknown parameter `' ACPI: PCI Interrupt 0000:00:1e.2[A] -> GSI 21 (level, low) -> IRQ 209 PCI: Setting latency timer of device 0000:00:1e.2 to 64 intel8x0_measure_ac97_clock: measured 50021 usecs intel8x0: clocking to 48000 hw_random hardware driver 1.0.0 loaded shpchp: acpi_shpchprm:\_SB_.PCI0 evaluate _BBN fail=0x5 shpchp: acpi_shpchprm:get_device PCI ROOT HID fail=0x5 shpchp: acpi_shpchprm:\_SB_.PCI0 evaluate _BBN fail=0x5 shpchp: acpi_shpchprm:get_device PCI ROOT HID fail=0x5 Zapata Telephony Interface Registered on major 196 Zaptel Version: 1.2.4 Echo Canceller: KB1 ACPI: PCI Interrupt 0000:05:04.0[A] -> GSI 16 (level, low) -> IRQ 217 wcfxo: DAA mode is 'FCC' Found a Wildcard FXO: Wildcard X100P ACPI: PCI Interrupt 0000:00: 1d.7[A] -> GSI 20 (level, low) -> IRQ 225 PCI: Setting latency timer of device 0000:00:1d.7 to 64 ehci_hcd 0000:00:1d.7: EHCI Host Controller ehci_hcd 0000:00:1d.7: debug port 1 ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1 ehci_hcd 0000:00:1d.7: irq 225, io mem 0xcfdc0000 PCI: cache line size of 128 is not supported by device 0000:00:1d.7 ehci_hcd 0000:00:1d.7: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004 hub 1-0:1.0: USB hub found hub 1-0:1.0: 8 ports detected USB Universal Host Controller Interface driver v2.2 SELinux: initialized (dev debugfs, type debugfs), uses genfs_contexts ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 20 (level, low) -> IRQ 225 PCI: Setting latency timer of device 0000:00:1d.0 to 64 uhci_hcd 0000:00:1d.0: UHCI Host Controller uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2 uhci_hcd 0000:00:1d.0: irq 225, io base 0x00003440 hub 2-0:1.0: USB hub found hub 2-0:1.0: 2 ports detected ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 18 (level, low) -> IRQ 233 PCI: Setting latency timer of device 0000:00:1d.1 to 64 uhci_hcd 0000:00: 1d.1: UHCI Host Controller uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3 uhci_hcd 0000:00:1d.1: irq 233, io base 0x00003460 hub 3-0:1.0: USB hub found hub 3-0:1.0: 2 ports detected ACPI: PCI Interrupt 0000:00: 1d.2[C] -> GSI 21 (level, low) -> IRQ 209 PCI: Setting latency timer of device 0000:00:1d.2 to 64 uhci_hcd 0000:00:1d.2: UHCI Host Controller uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4 uhci_hcd 0000:00:1d.2: irq 209, io base 0x00003480 hub 4-0:1.0: USB hub found hub 4-0:1.0: 2 ports detected ACPI: PCI Interrupt 0000:00:1d.3[D] -> GSI 22 (level, low) -> IRQ 50 PCI: Setting latency timer of device 0000:00: 1d.3 to 64 uhci_hcd 0000:00:1d.3: UHCI Host Controller uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5 uhci_hcd 0000:00:1d.3: irq 50, io base 0x000034a0 hub 5-0:1.0: USB hub found hub 5-0: 1.0: 2 ports detected ACPI: Power Button (FF) [PWRF] ibm_acpi: ec object not found md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. device-mapper: 4.4.0-ioctl (2005-01-12) initialised: dm-devel@xxxxxxxxxx EXT3 FS on sda1, internal journal SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs Adding 6466152k swap on /dev/sda2. Priority:-1 extents:1 SELinux: initialized (dev binfmt_misc, type binfmt_misc), uses genfs_contexts tg3: eth0: Link is up at 1000 Mbps, full duplex. tg3: eth0: Flow control is on for TX and on for RX. SELinux: initialized (dev rpc_pipefs, type rpc_pipefs), uses genfs_contexts i2c /dev entries driver SELinux: initialized (dev autofs, type autofs), uses genfs_contexts SELinux: initialized (dev autofs, type autofs), uses genfs_contexts NET: Registered protocol family 10 Disabled Privacy Extensions on device c037d640(lo) IPv6 over IPv4 tunneling driver eth0: no IPv6 routers present Freed a Wildcard Zapata Telephony Interface Unloaded Zapata Telephony Interface Registered on major 196 Zaptel Version: 1.2.4 Echo Canceller: KB1 ACPI: PCI Interrupt 0000:05:04.0[A] -> GSI 16 (level, low) -> IRQ 217 wcfxo: DAA mode is 'FCC' Found a Wildcard FXO: Wildcard X100P Registered tone zone 0 (United States / North America) device eth0 entered promiscuous mode device eth0 left promiscuous mode device eth0 entered promiscuous mode device eth0 left promiscuous mode device eth0 entered promiscuous mode device eth0 left promiscuous mode - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
