clock interrupts eating whole cpu
GiZmen
gizmen at zion.vsip.pl
Sun Dec 4 06:27:49 PST 2005
Hi,
yesterday i have noticed that my cpu is runnig on 100%.
And almost 100% is used on interrupts
CPU states: 0.0% user, 0.0% nice, 1.4% system, 98.6% interrupt, 0.0% idle
i tried to check what is going on.
I ran top and pressed S so i could see all processes:
PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
27 root 1 -32 -151 0K 8K RUN 62:48 67.72% swi4: clock
29 root 1 -44 -163 0K 8K RUN 28:30 28.17% swi1: net
11 root 1 171 52 0K 8K RUN 1:03 1.12% idle
I have noticed that clock is eating most free cpu time.
Net load is in normal because this is router for about 150 hosts.
Could any one tell me what is going on?
I am running FreeBSD 6.0-STABLE. i didnt have any problems like that before
with FreeBSD 6.0-BETA ,RC,RELEASE and even STABLE. This happend
yesterday or dwo days ago. I have downloaded newest src from cvsup and
recompiled kernel which took quite long time due cpu usage.
System is runnig postfix,mysql,apache2,dhcpd.
I have attached my kernel config.
I dont know where to look for problem. Please help me with this.
--
Best Regards:
GiZmen
UNIX is user-friendly; it's just picky about its friends
UNIX is simple; it just takes a genius to understand its simplicity
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machine i386
cpu I686_CPU
ident BLURP
makeoptions COPTFLAGS="-O2 -pipe -funroll-loops -ffast-math -fno-builtin"
makeoptions CONF_CFLAGS="-O2 -pipe -funroll-loops -ffast-math -fno-builtin"
#makeoptions DEBUG=-g
options SCHED_4BSD
#options SCHED_ULE # 4BSD scheduler
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 NFSCLIENT # Network Filesystem Client
#options NFSSERVER # Network Filesystem Server
#options NFS_ROOT # NFS usable as /, requires NFSCLIENT
#options MSDOSFS # MSDOS Filesystem
#options CD9660 # ISO 9660 Filesystem
#options PROCFS # Process filesystem (requires PSEUDOFS)
#options PSEUDOFS # Pseudo-filesystem framework
options NULLFS
options GEOM_GPT # GUID Partition Tables.
options COMPAT_43 # Compatible with BSD 4.3 [KEEP THIS!]
options COMPAT_FREEBSD4 # Compatible with FreeBSD4
options COMPAT_FREEBSD5 # Compatible with FreeBSD5
#options SCSI_DELAY=15000 # Delay (in ms) before probing SCSI
options KTRACE # ktrace(1) support
options SYSVSHM # SYSV-style shared memory
options SYSVMSG # SYSV-style message queues
options SYSVSEM # SYSV-style semaphores
#options SHMMAXPGS=4096
#options SHMSEG=256
#options SEMMNI=256
#options SEMMNS=512
#options SEMMNU=256
#options SEMMAP=256
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.
#device apic # I/O APIC
# Bus support. Do not remove isa, even if you have no isa slots
device isa
device pci
# Floppy drives
#device fdc
# ATA and ATAPI devices
device ata
device atadisk # ATA disk drives
#device ataraid # ATA RAID drives
device atapicd # ATAPI CDROM drives
options ATA_STATIC_ID # Static device numbering
# 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 sc
#device agp # support several AGP chipsets
device npx
# Add suspend/resume support for the i8254.
device pmtimer
#options CPU_ENABLE_TCC
#options VESA
options GEOM_BDE # Disk encryption.
options ALTQ
#options ALTQ_CBQ # Class Bases Queueing
options ALTQ_RED # Random Early Drop
#options ALTQ_RIO # RED In/Out
options ALTQ_HFSC # Hierarchical Packet Scheduler
#options ALTQ_CDNR # Traffic conditioner
#options ALTQ_PRIQ # Priority Queueing
device pf #PF OpenBSD packet-filter firewall
device pflog #logging support interface for PF
device pfsync #synchronization interface for PF
options IPSTEALTH #support for stealth forwarding
options ACCEPT_FILTER_DATA
options ACCEPT_FILTER_HTTP
options TCP_DROP_SYNFIN #drop TCP packets with SYN+FIN
options BRIDGE
options ZERO_COPY_SOCKETS
options QUOTA #enable disk quotas
options MAXCONS=5
options MAC
options SC_HISTORY_SIZE=5000
#options SC_DISABLE_DDBKEY
#options SC_DISABLE_REBOOT
#options SC_TWOBUTTON_MOUSE
#options CPU_SUSP_HLT
#options MAC_BIBA
#options MAC_BSDEXTENDED
options HZ=1000
#device sound
#options INCLUDE_CONFIG_FILE # Include this file in kernel
#options HW_WDOG
#options SW_WATCHDOG
options DEVICE_POLLING
options CPU_ATHLON_SSE_HACK
#options NETGRAPH
#options KDB
#options KDB_TRACE
#options KDB_UNATTENDED
#options DDB
#options INVARIANTS
#options INVARIANT_SUPPORT
#options DIAGNOSTIC
#options WITNESS
#options CD9660_ICONV
#options MSDOSFS_ICONV
#options NTFS_ICONV
#options UDF_ICONV
device miibus # MII bus support
#device re # RealTek 8139C+/8169/8169S/8110S
device rl # RealTek 8129/8139
#device ed # NE[12]000, SMC Ultra, 3c503, DS8390 cards
device fxp
device xl
# Pseudo devices.
device loop # Network loopback
device mem # Memory and kernel memory devices
device io # I/O device
device random # Entropy device
device ether # Ethernet support
#device sl # Kernel SLIP
#device ppp # Kernel PPP
#device tun # Packet tunnel.
device pty # Pseudo-ttys (telnet etc)
device md # Memory "disks"
device gif # IPv6 and IPv4 tunneling
device faith # IPv6-to-IPv4 relaying (translation)
device snp #Snoop device - to look at pty/vty/etc..
device bpf # Berkeley packet filter
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