net/boinc-client pograms only run half the time with SCHED_ULE

[Rene Ladan]

Hi,

I noticed that when using SCHED_ULE on my 2007-07-11 i386 CURRENT box (SMP),
the projects run with net/boinc-client only run for half the time.  On my T5600
(2-core) top shows something like:

load avarages : about 2 (as expected)
einstein at home : about 50% on core i
seti at home     : about 50% on core 1-i

The values in the TIME column also indicate that the projects run only half the
time.

My complete kernel configration is attached.  I've switched back to SCHED_4BSD
for now, as that scheduler works ok.

Regards,
Rene
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#
# GENERIC -- Generic kernel configuration file for FreeBSD/i386
#
# For more information on this file, please read the handbook section on
# Kernel Configuration Files:
#
#    http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
#
# The handbook is also available locally in /usr/share/doc/handbook
# if you've installed the doc distribution, otherwise always see the
# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
# latest information.
#
# An exhaustive list of options and more detailed explanations of the
# device lines is also present in the ../../conf/NOTES and NOTES files.
# If you are in doubt as to the purpose or necessity of a line, check first
# in NOTES.
#

machine		i386
cpu		I686_CPU
ident		RENE

# To statically compile in device wiring instead of /boot/device.hints
#hints		"GENERIC.hints"		# Default places to look for devices.

makeoptions	DEBUG=-g		# Build kernel with gdb(1) debug symbols

# Debugging for use in -current
options 	KDB			# Enable kernel debugger support.
options 	DDB			# Support DDB.
options		KDB_TRACE
options 	GDB			# Support remote GDB.
options 	INVARIANTS		# Enable calls of extra sanity checking
options 	INVARIANT_SUPPORT	# Extra sanity checks of internal structures, required by INVARIANTS
options 	WITNESS			# Enable checks to detect deadlocks and cycles
options 	WITNESS_SKIPSPIN	# Don't run witness on spinlocks for speed


#options 	SCHED_ULE		# ULE scheduler only runs BOINC 1/2 time ? --> current!
options		SCHED_4BSD		# works with BOINC as expected
options 	PREEMPTION		# Enable kernel thread preemption
options 	INET			# InterNETworking
options 	INET6			# IPv6 communications protocols
options 	FFS			# Berkeley Fast Filesystem
options 	SOFTUPDATES		# Enable FFS soft updates support
options 	UFS_ACL			# Support for access control lists
options 	UFS_DIRHASH		# Improve performance on big directories
options 	MD_ROOT			# MD is a potential root device
options 	CD9660			# ISO 9660 Filesystem
options 	COMPAT_43TTY		# Compatible with BSD 4.3 [KEEP THIS!]
options 	COMPAT_FREEBSD5		# Compatible with FreeBSD5
options 	COMPAT_FREEBSD6		# Compatible with FreeBSD6
options 	SCSI_DELAY=5000		# Delay (in ms) before probing SCSI
options 	KTRACE			# ktrace(1) support
options 	_KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
options 	AHC_REG_PRETTY_PRINT	# Print register bitfields in debug
					# output.  Adds ~128k to driver.
options 	AHD_REG_PRETTY_PRINT	# Print register bitfields in debug
					# output.  Adds ~215k to driver.
options 	ADAPTIVE_GIANT		# Giant mutex is adaptive.

options		SMP			# Dual core T5600
device		apic			# I/O APIC
options		STOP_NMI		# stop CPUs with NMI instead of IPI

# Bus support.
device		eisa
device		pci

# ATA and ATAPI devices
device		ata		# as module ?
device		atadisk		# ATA disk drives # as module ?
options 	ATA_STATIC_ID	# Static device numbering

# SCSI peripherals
device		scbus		# SCSI bus (required for SCSI)
device		da		# Direct Access (disks)
device		cd		# CD
device		pass		# Passthrough device (direct SCSI access)

# atkbdc0 controls both the keyboard and the PS/2 mouse
device		atkbdc		# AT keyboard controller
device		atkbd		# AT keyboard
device		psm		# PS/2 mouse

device		vga		# VGA video card driver

device		splash		# Splash screen and screen saver support

# syscons is the default console driver, resembling an SCO console
device		sc

device		agp		# support several AGP chipsets, required for drm
# drm/radeon not supported yet for RV515 (Radeon Mobility X1450) :(
device		drm
device		radeondrm

# Add suspend/resume support for the i8254.
device		pmtimer

# Pseudo devices.
device		loop		# Network loopback
device		ether		# Ethernet support
device		pty		# Pseudo-ttys (telnet etc)

# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
# Note that 'bpf' is required for DHCP.
device		bpf		# Berkeley packet filter

# USB support
device		uhci		# UHCI PCI->USB interface
device		ohci		# OHCI PCI->USB interface
device		ehci		# EHCI PCI->USB interface (USB 2.0)
device		usb		# USB Bus (required)

#added
options		VESA

options		DEVICE_POLLING

device		wlan
device		wlan_wep
device		wlan_amrr
device		wlan_scan_sta
device		wlan_scan_ap