Here are the results of my testing to try to determine when in the 2.3
series the dbench benchmark troubles started.
First my hardware:
P2/400, 256meg RAM, 10gig WDC AC310100B IDE HD.
I'm running dbench with 16 clients. Here are my results:
2.2.14 (for reference)
Throughput 14.7822 MB/sec (NB=18.4778 MB/sec 147.822 MBit/sec)
Throughput 13.1265 MB/sec (NB=16.4081 MB/sec 131.265 MBit/sec)
Throughput 15.4812 MB/sec (NB=19.3515 MB/sec 154.812 MBit/sec)
2.2.14 + Andrea's elevator 4 patch (again for reference)
Throughput 8.83695 MB/sec (NB=11.0462 MB/sec 88.3695 MBit/sec)
Throughput 9.39707 MB/sec (NB=11.7463 MB/sec 93.9707 MBit/sec)
Throughput 8.97566 MB/sec (NB=11.2196 MB/sec 89.7566 MBit/sec)
2.3.41
Throughput 15.707 MB/sec (NB=19.6338 MB/sec 157.07 MBit/sec)
2.3.42
Throughput 16.4416 MB/sec (NB=20.552 MB/sec 164.416 MBit/sec)
Throughput 15.5771 MB/sec (NB=19.4713 MB/sec 155.771 MBit/sec)
2.3.43
Throughput 4.2258 MB/sec (NB=5.28225 MB/sec 42.258 MBit/sec)
Throughput 4.07625 MB/sec (NB=5.09532 MB/sec 40.7625 MBit/sec)
2.3.44
Throughput 4.39419 MB/sec (NB=5.49274 MB/sec 43.9419 MBit/sec)
2.3.45
Throughput 4.56903 MB/sec (NB=5.71129 MB/sec 45.6903 MBit/sec
2.3.47
Throughput 3.87903 MB/sec (NB=4.84878 MB/sec 38.7903 MBit/sec)
So the problems definetly started after 2.3.43. Of course, it happens to
be the biggest patch in ages: 4megs. I am not a hacker myself, just a
tester ;) (compiled about 10 kernels tonight...) but it seems it cannot be
a SMP problem because I do not have SMP. Secondly, it appears that
andreas elevator work might be hurting performance alittle, but from the
work I just did it seems only a small part of the problem?
My config for 2.3.42 is at the bottom of the mail. A diff to the 2.3.43
config (generated with make oldconfig) is also attached.
I trust some use can be made with this info :) If you have any other
things for me try, please send along your patches and I'll give em a shot.
Lawrence
2.3.42 config:
#
# Automatically generated make config: don't edit
#
CONFIG_X86=y
CONFIG_ISA=y
CONFIG_UID16=y
#
# Code maturity level options
#
CONFIG_EXPERIMENTAL=y
#
# Processor type and features
#
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
CONFIG_M686=y
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_TSC=y
CONFIG_X86_GOOD_APIC=y
CONFIG_X86_PGE=y
CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set
# CONFIG_MATH_EMULATION is not set
# CONFIG_MTRR is not set
# CONFIG_SMP is not set
# CONFIG_X86_UP_IOAPIC is not set
#
# Loadable module support
#
CONFIG_MODULES=y
CONFIG_MODVERSIONS=y
CONFIG_KMOD=y
#
# General setup
#
CONFIG_NET=y
# CONFIG_VISWS is not set
CONFIG_PCI=y
# CONFIG_PCI_GOBIOS is not set
# CONFIG_PCI_GODIRECT is not set
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
# CONFIG_PCI_NAMES is not set
# CONFIG_MCA is not set
# CONFIG_HOTPLUG is not set
CONFIG_SYSVIPC=y
# CONFIG_BSD_PROCESS_ACCT is not set
CONFIG_SYSCTL=y
CONFIG_KCORE_ELF=y
# CONFIG_KCORE_AOUT is not set
CONFIG_BINFMT_AOUT=y
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=y
CONFIG_PARPORT=y
# CONFIG_PARPORT_PC is not set
# CONFIG_PARPORT_AMIGA is not set
# CONFIG_PARPORT_MFC3 is not set
# CONFIG_PARPORT_ATARI is not set
# CONFIG_PARPORT_SUNBPP is not set
# CONFIG_PARPORT_OTHER is not set
# CONFIG_PARPORT_1284 is not set
# CONFIG_ACPI is not set
CONFIG_APM=y
# CONFIG_APM_IGNORE_USER_SUSPEND is not set
CONFIG_APM_DO_ENABLE=y
CONFIG_APM_CPU_IDLE=y
# CONFIG_APM_DISPLAY_BLANK is not set
# CONFIG_APM_IGNORE_MULTIPLE_SUSPEND is not set
# CONFIG_APM_IGNORE_SUSPEND_BOUNCE is not set
# CONFIG_APM_RTC_IS_GMT is not set
# CONFIG_APM_ALLOW_INTS is not set
# CONFIG_APM_BAD_ENTRY_OFFSET is not set
# CONFIG_APM_REAL_MODE_POWER_OFF is not set
#
# Plug and Play configuration
#
# CONFIG_PNP is not set
# CONFIG_ISAPNP is not set
#
# Block devices
#
CONFIG_BLK_DEV_FD=y
CONFIG_BLK_DEV_IDE=y
#
# Please see Documentation/ide.txt for help/info on IDE drives
#
# CONFIG_BLK_DEV_HD_IDE is not set
CONFIG_BLK_DEV_IDEDISK=y
# CONFIG_IDEDISK_MULTI_MODE is not set
CONFIG_BLK_DEV_IDECD=y
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEFLOPPY is not set
# CONFIG_BLK_DEV_IDESCSI is not set
#
# IDE chipset support/bugfixes
#
CONFIG_BLK_DEV_CMD640=y
# CONFIG_BLK_DEV_CMD640_ENHANCED is not set
CONFIG_BLK_DEV_RZ1000=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_IDEDMA_PCI_AUTO=y
# CONFIG_IDEDMA_NEW_DRIVE_LISTINGS is not set
CONFIG_IDEDMA_PCI_EXPERIMENTAL=y
# CONFIG_BLK_DEV_OFFBOARD is not set
# CONFIG_BLK_DEV_AEC6210 is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_BLK_DEV_AMD7409 is not set
# CONFIG_BLK_DEV_CMD64X is not set
# CONFIG_BLK_DEV_CY82C693 is not set
# CONFIG_BLK_DEV_HPT34X is not set
# CONFIG_BLK_DEV_HPT366 is not set
# CONFIG_BLK_DEV_PIIX is not set
# CONFIG_BLK_DEV_NS87415 is not set
# CONFIG_BLK_DEV_OPTI621 is not set
# CONFIG_BLK_DEV_PDC202XX is not set
# CONFIG_BLK_DEV_SIS5513 is not set
# CONFIG_BLK_DEV_TRM290 is not set
# CONFIG_BLK_DEV_VIA82CXXX is not set
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_IDEDMA_AUTO=y
# CONFIG_IDE_CHIPSETS is not set
# CONFIG_BLK_CPQ_DA is not set
#
# Additional Block Devices
#
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_NBD=m
# CONFIG_BLK_DEV_MD is not set
CONFIG_BLK_DEV_RAM=m
# CONFIG_BLK_DEV_XD is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_PARIDE is not set
CONFIG_BLK_DEV_IDE_MODES=y
# CONFIG_BLK_DEV_HD is not set
#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
# CONFIG_NETLINK is not set
# CONFIG_NETFILTER is not set
CONFIG_FILTER=y
CONFIG_UNIX=y
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_IP_ROUTER is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_IP_ALIAS is not set
CONFIG_SYN_COOKIES=y
#
# (it is safe to leave these untouched)
#
CONFIG_SKB_LARGE=y
# CONFIG_IPV6 is not set
# CONFIG_KHTTPD is not set
# CONFIG_ATM is not set
#
#
#
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_DECNET is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_BRIDGE is not set
# CONFIG_LLC is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_NET_FASTROUTE is not set
# CONFIG_NET_HW_FLOWCONTROL is not set
#
# QoS and/or fair queueing
#
# CONFIG_NET_SCHED is not set
#
# Telephony Support
#
# CONFIG_PHONE is not set
# CONFIG_PHONE_IXJ is not set
#
# SCSI support
#
# CONFIG_SCSI is not set
#
# IEEE 1394 (FireWire) support
#
# CONFIG_IEEE1394 is not set
#
# I2O device support
#
# CONFIG_I2O is not set
# CONFIG_I2O_PCI is not set
# CONFIG_I2O_BLOCK is not set
# CONFIG_I2O_LAN is not set
# CONFIG_I2O_SCSI is not set
# CONFIG_I2O_PROC is not set
#
# Network device support
#
CONFIG_NETDEVICES=y
#
# ARCnet devices
#
# CONFIG_ARCNET is not set
CONFIG_DUMMY=m
# CONFIG_EQUALIZER is not set
# CONFIG_NET_SB1000 is not set
#
# Ethernet (10 or 100Mbit)
#
CONFIG_NET_ETHERNET=y
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_LANCE is not set
# CONFIG_NET_VENDOR_SMC is not set
# CONFIG_NET_VENDOR_RACAL is not set
# CONFIG_RTL8139 is not set
# CONFIG_DM9102 is not set
# CONFIG_AT1700 is not set
# CONFIG_DEPCA is not set
# CONFIG_NET_ISA is not set
# CONFIG_NET_EISA is not set
# CONFIG_NET_POCKET is not set
#
# Ethernet (1000 Mbit)
#
# CONFIG_YELLOWFIN is not set
# CONFIG_ACENIC is not set
# CONFIG_SK98LIN is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_PLIP is not set
CONFIG_PPP=m
CONFIG_PPP_ASYNC=m
CONFIG_PPP_SYNC_TTY=m
CONFIG_PPP_DEFLATE=m
CONFIG_PPP_BSDCOMP=m
CONFIG_SLIP=m
CONFIG_SLIP_COMPRESSED=y
# CONFIG_SLIP_SMART is not set
# CONFIG_SLIP_MODE_SLIP6 is not set
#
# Wireless LAN (non-hamradio)
#
# CONFIG_NET_RADIO is not set
#
# Token Ring driver support
#
# CONFIG_TR is not set
# CONFIG_NET_FC is not set
# CONFIG_RCPCI is not set
CONFIG_SHAPER=m
#
# Wan interfaces
#
# CONFIG_WAN is not set
#
# Amateur Radio support
#
# CONFIG_HAMRADIO is not set
#
# IrDA (infrared) support
#
# CONFIG_IRDA is not set
#
# ISDN subsystem
#
# CONFIG_ISDN is not set
#
# Old CD-ROM drivers (not SCSI, not IDE)
#
# CONFIG_CD_NO_IDESCSI is not set
#
# Character devices
#
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_SERIAL_CONSOLE=y
# CONFIG_SERIAL_EXTENDED is not set
# CONFIG_SERIAL_NONSTANDARD is not set
CONFIG_UNIX98_PTYS=y
CONFIG_UNIX98_PTY_COUNT=256
CONFIG_PRINTER=m
# CONFIG_LP_CONSOLE is not set
# CONFIG_PPDEV is not set
#
# I2C support
#
CONFIG_I2C=m
CONFIG_I2C_ALGOBIT=m
# CONFIG_I2C_PHILIPSPAR is not set
# CONFIG_I2C_ELV is not set
# CONFIG_I2C_VELLEMAN is not set
# CONFIG_I2C_ALGOPCF is not set
CONFIG_I2C_CHARDEV=m
#
# Mice
#
# CONFIG_BUSMOUSE is not set
CONFIG_MOUSE=y
CONFIG_PSMOUSE=y
CONFIG_82C710_MOUSE=y
# CONFIG_PC110_PAD is not set
#
# Joysticks
#
CONFIG_JOYSTICK=m
CONFIG_JOY_ANALOG=m
# CONFIG_JOY_ASSASSIN is not set
# CONFIG_JOY_GRAVIS is not set
# CONFIG_JOY_LOGITECH is not set
# CONFIG_JOY_SIDEWINDER is not set
# CONFIG_JOY_THRUSTMASTER is not set
# CONFIG_JOY_CREATIVE is not set
# CONFIG_JOY_LIGHTNING is not set
# CONFIG_JOY_PCI is not set
# CONFIG_JOY_MAGELLAN is not set
# CONFIG_JOY_SPACEORB is not set
# CONFIG_JOY_SPACEBALL is not set
# CONFIG_JOY_WARRIOR is not set
# CONFIG_JOY_CONSOLE is not set
# CONFIG_JOY_DB9 is not set
# CONFIG_JOY_TURBOGRAFX is not set
# CONFIG_QIC02_TAPE is not set
#
# Watchdog Cards
#
# CONFIG_WATCHDOG is not set
# CONFIG_NVRAM is not set
# CONFIG_RTC is not set
#
# Video For Linux
#
# CONFIG_VIDEO_DEV is not set
# CONFIG_DTLK is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
#
# Ftape, the floppy tape device driver
#
# CONFIG_FTAPE is not set
# CONFIG_DRM is not set
# CONFIG_DRM_TDFX is not set
# CONFIG_AGP is not set
#
# USB support
#
CONFIG_USB=y
#
# USB Controllers
#
CONFIG_USB_UHCI=y
# CONFIG_USB_UHCI_ALT is not set
# CONFIG_USB_OHCI is not set
#
# Miscellaneous USB options
#
# CONFIG_USB_DEVICEFS is not set
#
# USB Devices
#
# CONFIG_USB_PRINTER is not set
# CONFIG_USB_SCANNER is not set
# CONFIG_USB_AUDIO is not set
# CONFIG_USB_ACM is not set
# CONFIG_USB_SERIAL is not set
# CONFIG_USB_CPIA is not set
# CONFIG_USB_IBMCAM is not set
# CONFIG_USB_OV511 is not set
# CONFIG_USB_DC2XX is not set
# CONFIG_USB_STORAGE is not set
# CONFIG_USB_USS720 is not set
# CONFIG_USB_DABUSB is not set
#
# USB HID
#
CONFIG_USB_HID=y
# CONFIG_USB_GRAPHIRE is not set
# CONFIG_USB_WMFORCE is not set
CONFIG_INPUT_KEYBDEV=y
CONFIG_INPUT_MOUSEDEV=y
# CONFIG_INPUT_MOUSEDEV_MIX is not set
# CONFIG_INPUT_MOUSEDEV_DIGITIZER is not set
CONFIG_INPUT_JOYDEV=y
CONFIG_INPUT_EVDEV=y
#
# Misc devices
#
#
# Filesystems
#
# CONFIG_QUOTA is not set
CONFIG_AUTOFS_FS=y
# CONFIG_AUTOFS4_FS is not set
# CONFIG_ADFS_FS is not set
CONFIG_AFFS_FS=m
# CONFIG_HFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_BFS_FS_WRITE is not set
CONFIG_FAT_FS=y
CONFIG_MSDOS_FS=y
# CONFIG_UMSDOS_FS is not set
CONFIG_VFAT_FS=y
# CONFIG_EFS_FS is not set
# CONFIG_CRAMFS is not set
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
# CONFIG_MINIX_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS_RW is not set
# CONFIG_HPFS_FS is not set
CONFIG_PROC_FS=y
CONFIG_DEVPTS_FS=y
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX4FS_RW is not set
# CONFIG_ROMFS_FS is not set
CONFIG_EXT2_FS=y
# CONFIG_SYSV_FS is not set
# CONFIG_SYSV_FS_WRITE is not set
# CONFIG_UDF_FS is not set
# CONFIG_UDF_RW is not set
# CONFIG_UFS_FS is not set
# CONFIG_UFS_FS_WRITE is not set
#
# Network File Systems
#
# CONFIG_CODA_FS is not set
CONFIG_NFS_FS=m
# CONFIG_ROOT_NFS is not set
CONFIG_NFSD=m
# CONFIG_NFSD_V3 is not set
CONFIG_SUNRPC=m
CONFIG_LOCKD=m
# CONFIG_SMB_FS is not set
# CONFIG_NCP_FS is not set
#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_NLS=y
#
# Native Language Support
#
CONFIG_NLS_CODEPAGE_437=m
CONFIG_NLS_CODEPAGE_737=m
CONFIG_NLS_CODEPAGE_775=m
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_CODEPAGE_852=m
CONFIG_NLS_CODEPAGE_855=m
CONFIG_NLS_CODEPAGE_857=m
CONFIG_NLS_CODEPAGE_860=m
CONFIG_NLS_CODEPAGE_861=m
CONFIG_NLS_CODEPAGE_862=m
CONFIG_NLS_CODEPAGE_863=m
CONFIG_NLS_CODEPAGE_864=m
CONFIG_NLS_CODEPAGE_865=m
CONFIG_NLS_CODEPAGE_866=m
CONFIG_NLS_CODEPAGE_869=m
CONFIG_NLS_CODEPAGE_874=m
CONFIG_NLS_ISO8859_1=m
CONFIG_NLS_ISO8859_2=m
CONFIG_NLS_ISO8859_3=m
CONFIG_NLS_ISO8859_4=m
CONFIG_NLS_ISO8859_5=m
CONFIG_NLS_ISO8859_6=m
CONFIG_NLS_ISO8859_7=m
CONFIG_NLS_ISO8859_8=m
CONFIG_NLS_ISO8859_9=m
CONFIG_NLS_ISO8859_14=m
CONFIG_NLS_ISO8859_15=m
CONFIG_NLS_KOI8_R=m
#
# Console drivers
#
CONFIG_VGA_CONSOLE=y
CONFIG_VIDEO_SELECT=y
# CONFIG_MDA_CONSOLE is not set
#
# Frame-buffer support
#
CONFIG_FB=y
CONFIG_DUMMY_CONSOLE=y
# CONFIG_FB_RIVA is not set
# CONFIG_FB_CLGEN is not set
# CONFIG_FB_PM2 is not set
CONFIG_FB_VESA=y
CONFIG_FB_VGA16=y
CONFIG_VIDEO_SELECT=y
# CONFIG_FB_MATROX is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FBCON_ADVANCED is not set
CONFIG_FBCON_CFB8=y
CONFIG_FBCON_CFB16=y
CONFIG_FBCON_CFB24=y
CONFIG_FBCON_CFB32=y
CONFIG_FBCON_VGA_PLANES=y
# CONFIG_FBCON_FONTWIDTH8_ONLY is not set
# CONFIG_FBCON_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
#
# Sound
#
CONFIG_SOUND=m
# CONFIG_SOUND_CMPCI is not set
# CONFIG_SOUND_ES1370 is not set
# CONFIG_SOUND_ES1371 is not set
# CONFIG_SOUND_ESSSOLO1 is not set
# CONFIG_SOUND_MAESTRO is not set
# CONFIG_SOUND_SONICVIBES is not set
# CONFIG_SOUND_TRIDENT is not set
# CONFIG_SOUND_MSNDCLAS is not set
# CONFIG_SOUND_MSNDPIN is not set
CONFIG_SOUND_OSS=m
# CONFIG_SOUND_AD1816 is not set
# CONFIG_SOUND_SGALAXY is not set
CONFIG_SOUND_CS4232=m
# CONFIG_SOUND_SSCAPE is not set
# CONFIG_SOUND_GUS is not set
# CONFIG_SOUND_VMIDI is not set
# CONFIG_SOUND_TRIX is not set
# CONFIG_SOUND_MSS is not set
# CONFIG_SOUND_MPU401 is not set
# CONFIG_SOUND_NM256 is not set
# CONFIG_SOUND_MAD16 is not set
# CONFIG_SOUND_PAS is not set
# CONFIG_SOUND_PSS is not set
# CONFIG_SOUND_SOFTOSS is not set
CONFIG_SOUND_SB=m
# CONFIG_SOUND_WAVEFRONT is not set
# CONFIG_SOUND_MAUI is not set
# CONFIG_SOUND_VIA82CXXX is not set
CONFIG_SOUND_YM3812=m
CONFIG_SOUND_OPL3SA1=m
CONFIG_SOUND_OPL3SA2=m
# CONFIG_SOUND_UART6850 is not set
#
# Additional low level sound drivers
#
# CONFIG_LOWLEVEL_SOUND is not set
#
# Kernel hacking
#
CONFIG_MAGIC_SYSRQ=y
2.3.42->43 config diff:
134a135
> # CONFIG_BLK_DEV_CS5530 is not set
454d454
< # CONFIG_BFS_FS_WRITE is not set
-
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This archive was generated by hypermail 2b29 : Tue Feb 29 2000 - 21:00:23 EST