%wa (top) muito elevado, quem pode ser ?
Olá pessoal,
Aqui no servidor Samba, algo estranho começou a ocorrer, quando há
transferencia de arquivos na rede especialmente entre
estação->servidor, nosso servidor praticamente pára.
O led de disco indica trabalho intenso, o terminal simplesmente pára
de responder.
Troquei as duas placas de rede, melhorou um pouco, especialmente para
o terminal que agora não trava, mas as estações ficam completamente
congestionada, até o login no dominio samba dá timeout.
Experimentei transferir por scp para ver se o problema era o samba,
mas ocorreu a mesma coisa. Isto é, o problema não é o samba em sí.
O top indica %cpu em zero, mas o %wa que segundo o man é %I/O fica
elevado na casa do 90~100%. Eu estou achando que é o disco, mas o
diagnostico do fsck reporta que tá tudo OK. A temperatura do disco
também está OK. É um disco SATA e não parece ser defeito fisico.
Esses problemas passaram a ocorrer após a ultima atualização, mas não
deve ser o kernel, pois mesmo com o kernel antigo ocorre o mesmo
problema.
Este servidor roda apenas o samba, dhcp, ssh e dns, nem wins roda nele.
O que pode ser ?
$uname -a
Linux alphaserver1 2.6.18-6-686 #1 SMP Tue Jun 17 21:31:27 UTC 2008
i686 GNU/Linux
$cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Pentium(R) D CPU 2.80GHz
stepping : 7
cpu MHz : 2814.013
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc pni monitor ds_cpl cid cx16 xtpr lahf_lm
bogomips : 5632.97
processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Pentium(R) D CPU 2.80GHz
stepping : 7
cpu MHz : 2814.013
cache size : 1024 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
constant_tsc pni monitor ds_cpl cid cx16 xtpr lahf_lm
bogomips : 5628.17
$dmesg
Linux version 2.6.18-6-686 (Debian 2.6.18.dfsg.1-22)
(dannf@debian.org) (gcc version 4.1.2 20061115 (prerelease) (Debian
4.1.1-21)) #1 SMP Tue Jun 17 21:31:27 UTC 2008
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 0000000000098c00 (usable)
BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000001fff0000 (usable)
BIOS-e820: 000000001fff0000 - 000000001fff3000 (ACPI NVS)
BIOS-e820: 000000001fff3000 - 0000000020000000 (ACPI data)
BIOS-e820: 00000000f0000000 - 00000000f4000000 (reserved)
BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
0MB HIGHMEM available.
511MB LOWMEM available.
found SMP MP-table at 000f52a0
On node 0 totalpages: 131056
DMA zone: 4096 pages, LIFO batch:0
Normal zone: 126960 pages, LIFO batch:31
DMI 2.3 present.
ACPI: RSDP (v000 GBT ) @ 0x000f6c50
ACPI: RSDT (v001 GBT AWRDACPI 0x42302e31 AWRD 0x01010101) @ 0x1fff3040
ACPI: FADT (v001 GBT AWRDACPI 0x42302e31 AWRD 0x01010101) @ 0x1fff30c0
ACPI: MCFG (v001 GBT AWRDACPI 0x42302e31 AWRD 0x01010101) @ 0x1fff6d40
ACPI: MADT (v001 GBT AWRDACPI 0x42302e31 AWRD 0x01010101) @ 0x1fff6c40
ACPI: DSDT (v001 GBT AWRDACPI 0x00001000 MSFT 0x0100000c) @ 0x00000000
ACPI: PM-Timer IO Port: 0x408
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 15:4 APIC version 20
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
Processor #1 15:4 APIC version 20
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] disabled)
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] disabled)
ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1])
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
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 30000000 (gap: 20000000:d0000000)
Detected 2814.013 MHz processor.
Built 1 zonelists. Total pages: 131056
Kernel command line: root=/dev/sda2 ro
mapped APIC to ffffd000 (fee00000)
mapped IOAPIC to ffffc000 (fec00000)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 2048 (order: 11, 8192 bytes)
Console: colour VGA+ 80x25
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 512024k/524224k available (1541k kernel code, 11596k reserved,
580k data, 196k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 5632.97 BogoMIPS (lpj=11265940)
Security Framework v1.0.0 initialized
SELinux: Disabled at boot.
Capability LSM initialized
Mount-cache hash table entries: 512
CPU: After generic identify, caps: bfebfbff 20100000 00000000 00000000
0000641d 00000000 00000001
CPU: After vendor identify, caps: bfebfbff 20100000 00000000 00000000
0000641d 00000000 00000001
monitor/mwait feature present.
using mwait in idle threads.
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 1024K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 0
CPU: After all inits, caps: bfebfbff 20100000 00000000 00000180
0000641d 00000000 00000001
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
Compat vDSO mapped to ffffe000.
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
ACPI: Core revision 20060707
CPU0: Intel(R) Pentium(R) D CPU 2.80GHz stepping 07
SMP alternatives: switching to SMP code
Booting processor 1/1 eip 3000
Initializing CPU#1
Calibrating delay using timer specific routine.. 5628.17 BogoMIPS (lpj=11256354)
CPU: After generic identify, caps: bfebfbff 20100000 00000000 00000000
0000641d 00000000 00000001
CPU: After vendor identify, caps: bfebfbff 20100000 00000000 00000000
0000641d 00000000 00000001
monitor/mwait feature present.
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 1024K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 1
CPU: After all inits, caps: bfebfbff 20100000 00000000 00000180
0000641d 00000000 00000001
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) D CPU 2.80GHz stepping 07
Total of 2 processors activated (11261.14 BogoMIPS).
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1
checking TSC synchronization across 2 CPUs: passed.
Brought up 2 CPUs
migration_cost=765
checking if image is initramfs... it is
Freeing initrd memory: 4391k freed
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: Using MMCONFIG
Setting up standard PCI resources
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
Boot video device is 0000:01:00.0
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB0._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs *3 4 5 6 7 9 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 *10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 *5 6 7 9 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNK0] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNK1] (IRQs 3 4 5 6 7 *9 10 11 12 14 15)
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
pnp: PnP ACPI: found 15 devices
PnPBIOS: Disabled by ACPI PNP
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 0x400-0x4bf could not be reserved
PCI: Bridge: 0000:00:1e.0
IO window: a000-afff
MEM window: e2000000-e4ffffff
PREFETCH window: e0000000-e1ffffff
PCI: Setting latency timer of device 0000:00:1e.0 to 64
NET: Registered protocol family 2
IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
TCP established hash table entries: 16384 (order: 5, 131072 bytes)
TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
TCP: Hash tables configured (established 16384 bind 8192)
TCP reno registered
audit: initializing netlink socket (disabled)
audit(1219174309.004:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
Initializing Cryptographic API
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
00:07: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13: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
mice: PS/2 mouse device common for all mice
TCP bic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
NET: Registered protocol family 8
NET: Registered protocol family 20
Starting balanced_irq
Using IPI No-Shortcut mode
ACPI: (supports S0 S1 S4 S5)
Freeing unused kernel memory: 196k freed
Time: tsc clocksource has been installed.
input: AT Translated Set 2 keyboard as /class/input/input0
ACPI: Processor [CPU0] (supports 2 throttling states)
ACPI: Processor [CPU1] (supports 2 throttling states)
ACPI Exception (acpi_processor-0681): AE_NOT_FOUND, Processor Device
is not present [20060707]
ACPI: Getting cpuindex for acpiid 0x2
ACPI Exception (acpi_processor-0681): AE_NOT_FOUND, Processor Device
is not present [20060707]
ACPI: Getting cpuindex for acpiid 0x3
usbcore: registered new driver usbfs
usbcore: registered new driver hub
USB Universal Host Controller Interface driver v3.0
ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 23 (level, low) -> IRQ 169
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 1
uhci_hcd 0000:00:1d.0: irq 169, io base 0x0000bc00
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
8139too Fast Ethernet driver 0.9.27
SCSI subsystem initialized
libata version 2.00 loaded.
ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 177
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 2
uhci_hcd 0000:00:1d.1: irq 177, io base 0x0000b000
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 185
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 3
uhci_hcd 0000:00:1d.2: irq 185, io base 0x0000b400
usb usb3: configuration #1 chosen from 1 choice
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:00:1d.3[D] -> GSI 16 (level, low) -> IRQ 193
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 4
uhci_hcd 0000:00:1d.3: irq 193, io base 0x0000b800
usb usb4: configuration #1 chosen from 1 choice
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 2 ports detected
ICH7: IDE controller at PCI slot 0000:00:1f.1
ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 185
ICH7: chipset revision 1
ICH7: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:pio, hdb:pio
ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:pio
Probing IDE interface ide0...
Probing IDE interface ide1...
ACPI: PCI Interrupt 0000:01:01.0[A] -> GSI 19 (level, low) -> IRQ 177
eth0: RealTek RTL8139 at 0xa000, 00:40:f4:5b:a8:25, IRQ 177
eth0: Identified 8139 chip type 'RTL-8139C'
ACPI: PCI Interrupt 0000:00:1d.7[A] -> GSI 23 (level, low) -> IRQ 169
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: new USB bus registered, assigned bus number 5
PCI: cache line size of 128 is not supported by device 0000:00:1d.7
ehci_hcd 0000:00:1d.7: irq 169, io mem 0xe5004000
ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb5: configuration #1 chosen from 1 choice
hub 5-0:1.0: USB hub found
hub 5-0:1.0: 8 ports detected
8139cp: 10/100 PCI Ethernet driver v1.2 (Mar 22, 2004)
r8169 Gigabit Ethernet driver 2.2LK-NAPI loaded
ACPI: PCI Interrupt 0000:01:02.0[A] -> GSI 18 (level, low) -> IRQ 185
eth1: RTL8169sb/8110sb at 0xe087a000, 00:0c:76:97:04:f3, IRQ 185
ahci 0000:00:1f.2: version 2.0
ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 177
PCI: Setting latency timer of device 0000:00:1f.2 to 64
ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 4 ports 3 Gbps 0xf impl RAID mode
ahci 0000:00:1f.2: flags: 64bit ncq led clo pio slum part
ata1: SATA max UDMA/133 cmd 0xE081A100 ctl 0x0 bmdma 0x0 irq 209
ata2: SATA max UDMA/133 cmd 0xE081A180 ctl 0x0 bmdma 0x0 irq 209
ata3: SATA max UDMA/133 cmd 0xE081A200 ctl 0x0 bmdma 0x0 irq 209
ata4: SATA max UDMA/133 cmd 0xE081A280 ctl 0x0 bmdma 0x0 irq 209
scsi0 : ahci
ata1: SATA link down (SStatus 0 SControl 300)
scsi1 : ahci
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2.00: ATA-7, max UDMA/133, 488397168 sectors: LBA48 NCQ (depth 31/32)
ata2.00: ata2: dev 0 multi count 0
ata2.00: configured for UDMA/133
scsi2 : ahci
ata3: SATA link down (SStatus 0 SControl 300)
scsi3 : ahci
ata4: SATA link down (SStatus 0 SControl 300)
Vendor: ATA Model: WDC WD2500JS-22N Rev: 10.0
Type: Direct-Access ANSI SCSI revision: 05
SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
sda: sda1 sda2 sda3
sd 1:0:0:0: Attached scsi disk sda
Attempting manual resume
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
input: PC Speaker as /class/input/input1
Real Time Clock Driver v1.12ac
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
parport: PnPBIOS parport detected.
parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 16 (level, low) -> IRQ 193
PCI: Setting latency timer of device 0000:00:1b.0 to 64
intel_rng: FWH not detected
hda_codec: Unknown model for ALC882, trying auto-probe from BIOS...
ACPI: PCI Interrupt 0000:00:1f.3[B] -> GSI 19 (level, low) -> IRQ 177
input: ImPS/2 Generic Wheel Mouse as /class/input/input2
ts: Compaq touchscreen protocol output
Adding 979924k swap on /dev/sda1. Priority:-1 extents:1 across:979924k
EXT3 FS on sda2, internal journal
fuse init (API version 7.7)
loop: loaded (max 8 devices)
it87: Found IT8712F chip at 0x290, revision 7
device-mapper: ioctl: 4.7.0-ioctl (2006-06-24) initialised: dm-devel@redhat.com
kjournald starting. Commit interval 5 seconds
EXT3 FS on sda3, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
r8169: eth0: link up
eth1: link up, 100Mbps, full-duplex, lpa 0x45E1
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
IPv6 over IPv4 tunneling driver
ACPI: Power Button (FF) [PWRF]
ACPI: Power Button (CM) [PWRB]
lp0: using parport0 (interrupt-driven).
ppdev: user-space parallel port driver
eth0: no IPv6 routers present
eth1: no IPv6 routers present
usb 5-5: new high speed USB device using ehci_hcd and address 2
usb 5-5: configuration #1 chosen from 1 choice
Initializing USB Mass Storage driver...
scsi4 : SCSI emulation for USB Mass Storage devices
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
Vendor: SAMSUNG Model: HM100JC Rev: 0000
Type: Direct-Access ANSI SCSI revision: 00
SCSI device sdb: 195371568 512-byte hdwr sectors (100030 MB)
sdb: Write Protect is off
sdb: Mode Sense: 27 00 00 00
sdb: assuming drive cache: write through
SCSI device sdb: 195371568 512-byte hdwr sectors (100030 MB)
sdb: Write Protect is off
sdb: Mode Sense: 27 00 00 00
sdb: assuming drive cache: write through
sdb: sdb1
sd 4:0:0:0: Attached scsi disk sdb
usb-storage: device scan complete
kjournald starting. Commit interval 5 seconds
EXT3 FS on sdb1, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting. Commit interval 5 seconds
EXT3 FS on sdb1, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
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