Re: 2.6.10 TCP troubles -- suggested patch
From: Hubert Tonneau <hidden>
Date: 2005-02-16 20:00:29
David S. Miller wrote:
Hubert, do you have netfilter enabled in the 2.6.10 kernel you are running? I'm asking because the TCP changes in 2.6.10 are pretty benign (attached for the curious who want to review along), whereas netfilter had major updates particularly in the TCP connection tracking code.
There is no netfilter on this server.
I also reviewed 2.6.10-ac11 for anything interesting wrt. TCP and the only thing in there is the tcp_retrans_try_collapse() missing check to avoid collapsing TSO segments.
I'm using 2.6.10-ac11 for security reasons. I could use 2.6.10-as1 as well.
As far as I know, they all behave exactly the same from the TCP point of view.
The difference is definetly between stock 2.6.9 and stock 2.6.10
If it helps, you can send me a patch reverting TCP changes between 2.6.10
and 2.6.9, and I'll give it a spin, just to be sure that the problem is
truely related to TCP code, not other changes side effects.
Anyway, here is the set of settings I'm using to build the kernel, and no
module is loaded while the test is running:
CONFIG_2GB: y
CONFIG_ACPI: y
CONFIG_ACPI_AC: m
CONFIG_ACPI_BATTERY: m
CONFIG_ACPI_BUTTON: m
CONFIG_ACPI_FAN: m
CONFIG_ACPI_PROCESSOR: y
CONFIG_ACPI_SLEEP: y
CONFIG_ACPI_THERMAL: y
CONFIG_ACPI_VIDEO: m
CONFIG_APM_RTC_IS_GMT: y
CONFIG_ATALK: m
CONFIG_AUTODETECT_RAID: y
CONFIG_AUTOFS_FS: m
CONFIG_BINFMT_ELF: y
CONFIG_BINFMT_MISC: y
CONFIG_BLK_DEV_CMD640: y
CONFIG_BLK_DEV_FD: m
CONFIG_BLK_DEV_GENERIC: y
CONFIG_BLK_DEV_IDE: y
CONFIG_BLK_DEV_IDECD: m
CONFIG_BLK_DEV_IDEDISK: y
CONFIG_BLK_DEV_IDEDMA: y
CONFIG_BLK_DEV_IDEDMA_PCI: y
CONFIG_BLK_DEV_IDEPCI: y
CONFIG_BLK_DEV_IDESCSI: m
CONFIG_BLK_DEV_LOOP: m
CONFIG_BLK_DEV_MD: y
CONFIG_BLK_DEV_NBD: m
CONFIG_BLK_DEV_PIIX: y
CONFIG_BLK_DEV_RAM: m
CONFIG_BLK_DEV_RZ1000: y
CONFIG_BLK_DEV_SD: y
CONFIG_BLK_DEV_SR: m
CONFIG_BLK_DEV_TRIRON: y
CONFIG_BSD_PROCESS_ACCT: y
CONFIG_CHR_DEV_SG: m
CONFIG_CHR_DEV_ST: m
CONFIG_CODA_FS: m
CONFIG_E1000: y
CONFIG_EXPERIMENTAL: y
CONFIG_EXT2_FS: y
CONFIG_EXT3_FS: y
CONFIG_EXT3_FS_XATTR: y
CONFIG_FAT_FS: m
CONFIG_FILTER: y
CONFIG_FUSION: y
CONFIG_FUSION_CTL: m
CONFIG_FUSION_ISENSE: m
CONFIG_FUSION_LAN: m
CONFIG_HFSPLUS_FS: m
CONFIG_HFS_FS: m
CONFIG_HIGHMEM: y
CONFIG_HIGHMEM4G: y
CONFIG_HPET_TIMER: y
CONFIG_HPFS_FS: m
CONFIG_IDE: y
CONFIG_IDEDMA_AUTO: y
CONFIG_IDEDMA_ONLYDISK: y
CONFIG_IDEDMA_PCI_AUTO: y
CONFIG_IDEPCI_SHARE_IRQ: y
CONFIG_IDE_GENERIC: y
CONFIG_INET: y
CONFIG_INPUT: y
CONFIG_INPUT_KEYBDEV: m
CONFIG_INPUT_KEYBOARD: y
CONFIG_INPUT_MOUSE: y
CONFIG_INPUT_MOUSEDEV: m
CONFIG_IP_ALIAS: y
CONFIG_IP_ROUTE_VERBOSE: y
CONFIG_IRQBALANCE: y
CONFIG_ISO9660_FS: m
CONFIG_KCORE_ELF: y
CONFIG_KEYBOARD_ATKBD: y
CONFIG_LEGACY_PTYS: y
CONFIG_LOCKD: m
CONFIG_M386: n
CONFIG_M486: n
CONFIG_M586: n
CONFIG_M686: n
CONFIG_MAC_PARTITION: y
CONFIG_MD: y
CONFIG_MD_BOOT: y
CONFIG_MD_LINEAR: y
CONFIG_MD_LVM: n
CONFIG_MD_MIRRORING: y
CONFIG_MD_RAID0: y
CONFIG_MD_RAID1: y
CONFIG_MD_RAID5: y
CONFIG_MD_STRIPED: y
CONFIG_MD_TRANSLUCENT: n
CONFIG_MODULES: y
CONFIG_MODULE_UNLOAD: y
CONFIG_MOUSE: m
CONFIG_MOUSE_PS2: y
CONFIG_MPENTIUM4: y
CONFIG_MSDOS_FS: m
CONFIG_MTRR: y
CONFIG_NET: y
CONFIG_NETDEVICES: y
CONFIG_NET_ETHERNET: y
CONFIG_NFSD: m
CONFIG_NFS_FS: m
CONFIG_NLS: y
CONFIG_NLS_CODEPAGE_437: m
CONFIG_NLS_CODEPAGE_850: m
CONFIG_NLS_ISO8859_1: m
CONFIG_NLS_UTF8: m
CONFIG_NTFS_FS: m
CONFIG_OOM_KILLER: y
CONFIG_PACKET: y
CONFIG_PARPORT: m
CONFIG_PARPORT_PC: m
CONFIG_PCI: y
CONFIG_PCI_BIOS: y
CONFIG_PCI_GOANY: y
CONFIG_PCI_OLD_PROC: y
CONFIG_PCI_QUIRKS: y
CONFIG_PIIX_TUNING: y
CONFIG_PM: y
CONFIG_PPP: m
CONFIG_PPPOE: m
CONFIG_PPP_ASYNC: m
CONFIG_PPP_BSDCOMP: m
CONFIG_PPP_DEFLATE: m
CONFIG_PPP_FILTER: y
CONFIG_PPP_SYNC_TTY: m
CONFIG_PREEMPT: y
CONFIG_PRINTER: m
CONFIG_PRINTER_READBACK: y
CONFIG_PROC_FS: y
CONFIG_PSMOUSE: y
CONFIG_QNX4FS_FS: m
CONFIG_REGPARM: y
CONFIG_RTC: y
CONFIG_SCSI: y
CONFIG_SCSI_PROC_FS: y
CONFIG_SERIAL: m
CONFIG_SERIAL_8250: m
CONFIG_SHAPER: m
CONFIG_SLIP: m
CONFIG_SMB_FS: m
CONFIG_SMP: y
CONFIG_SOUND: m
CONFIG_SUNRPC: m
CONFIG_SYSCTL: y
CONFIG_SYSVIPC: y
CONFIG_UFS_FS: m
CONFIG_UMSDOS_FS: m
CONFIG_UNIX: y
CONFIG_USB: m
CONFIG_USB_ACM: m
CONFIG_USB_AUDIO: m
CONFIG_USB_CDCETHER: m
CONFIG_USB_DEVICEFS: y
CONFIG_USB_EHCI_HCD: m
CONFIG_USB_HID: m
CONFIG_USB_HIDINPUT: y
CONFIG_USB_KBD: m
CONFIG_USB_MOUSE: m
CONFIG_USB_OHCI: m
CONFIG_USB_OHCI_HCD: m
CONFIG_USB_PRINTER: m
CONFIG_USB_SERIAL: m
CONFIG_USB_STORAGE: m
CONFIG_USB_UHCI: m
CONFIG_USB_UHCI_ALT: m
CONFIG_USB_UHCI_HCD: m
CONFIG_VFAT_FS: m
CONFIG_VGA_CONSOLE: y
CONFIG_VT: y
CONFIG_VT_CONSOLE: y
CONFIG_X86_MCE: y
CONFIG_X86_UP_APIC: y
CONFIG_X86_UP_IOAPIC: y
Since we are at it, here are the hardware components of the box:
8086 Intel Corporation 254C E7501 0 Host Controller
8086 Intel Corporation 2543 E7500/E7501 0 HI_B Virtual PCI-to-PCI Bridge
8086 Intel Corporation 2545 E7500/E7501 0 HI_C Virtual PCI-to-PCI Bridge
8086 Intel Corporation 2547 E7500/E7501 0 HI_D Virtual PCI-to-PCI Bridge
8086 Intel Corporation 2482 82801CA/CAM 10 USB Controller
8086 Intel Corporation 244E 82801BA/CA/DB, 6300ESB 0 Hub Interface to PCI Bridge
8086 Intel Corporation 2480 82801CA 0 LPC Interface Bridge
8086 Intel Corporation 248B 82801CA 0 UltraATA/100 IDE Controller
8086 Intel Corporation 1461 14611014 0 I/OxAPIC Interrupt Controller
8086 Intel Corporation 1461 14611014 0 I/OxAPIC Interrupt Controller
8086 Intel Corporation 1461 14611014 0 I/OxAPIC Interrupt Controller
8086 Intel Corporation 1461 14611014 0 I/OxAPIC Interrupt Controller
8086 Intel Corporation 1461 14611014 0 I/OxAPIC Interrupt Controller
8086 Intel Corporation 1461 14611014 0 I/OxAPIC Interrupt Controller
8086 Intel Corporation 1460 82870P2 0 Hub Interface-to-PCI Bridge
8086 Intel Corporation 1460 82870P2 0 Hub Interface-to-PCI Bridge
8086 Intel Corporation 1460 82870P2 0 Hub Interface-to-PCI Bridge
8086 Intel Corporation 1460 82870P2 0 Hub Interface-to-PCI Bridge
8086 Intel Corporation 1460 82870P2 0 Hub Interface-to-PCI Bridge
8086 Intel Corporation 1460 82870P2 0 Hub Interface-to-PCI Bridge
8086 Intel Corporation 1026 82545GM 18 Gigabit Ethernet Controller
8086 Intel Corporation 100D 82544GC 1C Gigabit Ethernet Controller (LOM)
8086 Intel Corporation 0309 80303 0 I/O Processor PCI-to-PCI Bridge Unit
1000 LSI Logic 0030 LSI53C1020/1030 78 PCI-X to Ultra320 SCSI Controller
1000 LSI Logic 0030 LSI53C1020/1030 79 PCI-X to Ultra320 SCSI Controller
1002 ATI Technologies 4752 Rage XL PCI 0
And the interrupts (while running 2.6.9):
CPU0 CPU1
0: 159132374 132686719 IO-APIC-edge timer
1: 9 0 IO-APIC-edge i8042
8: 0 0 IO-APIC-edge rtc
9: 0 0 IO-APIC-level acpi
14: 1 0 IO-APIC-edge ide0
24: 22225220 0 IO-APIC-level eth0
28: 4 134406507 IO-APIC-level eth1
120: 532730 578109 IO-APIC-level ioc0
121: 1931739 1327672 IO-APIC-level ioc1
NMI: 0 0
LOC: 291863458 291863528
ERR: 0
MIS: 0
/proc/net/dev
Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
eth0:2512143307 20914618 0 0 0 0 0 0 1951489031 52933097 0 0 0 0 0 0
eth1:943883086 75451745 0 0 0 0 0 0 201914508 171409895 0 0 0 0 0 0
lo:2247204588 748445 0 0 0 0 0 0 2247204588 748445 0 0 0 0 0 0
/proc/net/route
Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
eth0 207C29D5 00000000 0001 0 0 0 F0FFFFFF 0 0 0
eth1 00606B0A 00000000 0001 0 0 0 00FFFFFF 0 0 0
eth0 00000000 217C29D5 0003 0 0 0 00000000 0 0 0