Poor Samba throughput on 6.0
Joao Barros
joao.barros at gmail.com
Fri Nov 11 05:55:04 PST 2005
On 11/11/05, Robert Watson <rwatson at freebsd.org> wrote:
>
> On Wed, 9 Nov 2005, Joao Barros wrote:
>
> > I tried using a single drive, an IDE and a SCSI-2 and on 2 machines at
> > work both with a RAID1. Even better, there is a part in my initial email
> > where I mention that having a 700MB file cached (iostat reported no
> > reads) the results were the same. With this in mind I don't think the
> > problem is at the storage level.
>
> My feeling is that it is likely related to the network stack -- perhaps a
> combination of Samba<->sockets and TCP<->Windows, hence pointing at things
> like TCP settings. It would be quite interesting to know what top -S
> looks like during (perhaps two minutes into) a long-haul transfer, and the
> output of systat -vmstat 1. I know Apple has done some work on the
> efficiency of the FreeBSD SMB client when talking to windows servers
> relating to how TCP behaves, but haven't heard anything about them looking
> at similar issues in Samba.
>
> Robert N M Watson
>
Output of top -S and systat -vmstat 1 after copying a file twice
(read) uncached and then cached:
top -S:
last pid: 3744; load averages: 0.12, 0.06, 0.02
up 0+23:41:09 13:48:20
100 processes: 3 running, 57 sleeping, 40 waiting
CPU states: 0.0% user, 0.0% nice, 2.1% system, 4.9% interrupt, 93.0% idle
Mem: 16M Active, 812M Inact, 179M Wired, 212K Cache, 112M Buf, 116M Free
Swap: 2048M Total, 2048M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
11 root 1 171 52 0K 8K CPU1 0 0:00 99.71% idle: cpu1
12 root 1 171 52 0K 8K RUN 0 23.6H 83.06% idle: cpu0
540 j.barros 1 96 0 5736K 2704K select 0 0:22 6.35% smbd
31 root 1 -68 -187 0K 8K WAIT 0 0:22 4.64% irq19: bge0
44 root 1 -44 -163 0K 8K WAIT 0 0:13 1.22% swi1: net
45 root 1 -32 -151 0K 8K WAIT 0 0:54 0.00%
swi4: clock sio
63 root 1 20 0 0K 8K syncer 0 0:45 0.00% syncer
4 root 1 -8 0 0K 8K - 0 0:05 0.00% g_down
3 root 1 -8 0 0K 8K - 0 0:05 0.00% g_up
47 root 1 -16 0 0K 8K - 0 0:05 0.00% yarrow
2 root 1 -8 0 0K 8K - 0 0:04 0.00% g_event
462 root 1 96 0 3552K 1404K select 0 0:02 0.00% nmbd
68 root 1 12 0 0K 8K - 0 0:02 0.00% schedcpu
425 root 1 96 0 3396K 2236K select 0 0:01 0.00% sendmail
60 root 1 171 52 0K 8K pgzero 0 0:01 0.00% pagezero
49 root 1 -40 -159 0K 8K WAIT 0 0:01 0.00% swi2: cambio
55 root 1 0 0 0K 8K tzpoll 0 0:01 0.00% acpi_thermal
33 root 1 -64 -183 0K 8K WAIT 0 0:01 0.00% irq21: ciss0
529 j.barros 1 96 0 6076K 2272K select 0 0:01 0.00% sshd
61 root 1 -16 0 0K 8K psleep 0 0:00 0.00% bufdaemon
57 root 1 -8 0 0K 8K - 0 0:00 0.00% fdc0
62 root 1 -4 0 0K 8K vlruwt 0 0:00 0.00% vnlru
441 root 1 8 0 1312K 884K nanslp 0 0:00 0.00% cron
3741 root 1 96 0 2300K 1404K CPU0 0 0:00 0.00% top
526 root 1 4 0 6096K 2216K sbwait 0 0:00 0.00% sshd
295 root 1 96 0 1292K 768K select 0 0:00 0.00% syslogd
58 root 1 -16 0 0K 8K psleep 0 0:00 0.00% pagedaemon
376 root 1 96 0 1208K 672K select 0 0:00 0.00% usbd
533 root 1 20 0 3752K 2352K pause 0 0:00 0.00% csh
3719 j.barros 1 96 0 6076K 2412K select 0 0:00 0.00% sshd
3716 root 1 4 0 6096K 2400K sbwait 0 0:00 0.00% sshd
429 smmsp 1 20 0 3296K 1980K pause 0 0:00 0.00% sendmail
466 root 1 96 0 5384K 2308K select 0 0:00 0.00% smbd
3723 root 1 5 0 3732K 2296K ttyin 0 0:00 0.00% csh
1 root 1 8 0 724K 244K wait 0 0:00 0.00% init
systat -vmstat 1:
2 users Load 0.13 0.06 0.02 Nov 11 13:48
Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
Tot Share Tot Share Free in out in out
Act 15660 2460 58664 3832 119084 count
All 1029840 4828 3304436 7592 pages
Interrupts
Proc:r p d s w Csw Trp Sys Int Sof Flt cow 8970 total
1 30 15030 8 2722 8500 2 22 182924 wire 1: atkb
16352 act 6: fdc0
3.7%Sys 3.7%Intr 0.4%User 0.0%Nice 92.2%Idl 831256 inact 13: npx
| | | | | | | | | | 212 cache 14: ata
==++ 118872 free 4955 19: bge
daefr 1 21: cis
Namei Name-cache Dir-cache prcfr 2007 cpu0: time
Calls hits % hits % react 2007 cpu1: time
pdwake
zfod pdpgs
Disks da0 pass0 ofod intrn
KB/t 2.00 0.00 %slo-z 114464 buf
tps 1 0 tfree 5 dirtybuf
MB/s 0.00 0.00 78034 desiredvnodes
% busy 2 0 54388 numvnodes
19504 freevnodes
dmesg:
Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 6.0-RELEASE #5: Thu Nov 10 13:57:54 WET 2005
root at bio:/usr/obj/usr/src/sys/SMP
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Pentium(R) 4 CPU 3.06GHz (3065.82-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf29 Stepping = 9
Features=0xbfebfbff<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,HTT,TM,PBE>
Features2=0x4400<CNTX-ID,<b14>>
Hyperthreading: 2 logical CPUs
real memory = 1207934976 (1151 MB)
avail memory = 1173495808 (1119 MB)
ACPI APIC Table: <COMPAQ 00000083>
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
ioapic0: Changing APIC ID to 2
ioapic1: Changing APIC ID to 3
MADT: Forcing active-low polarity and level trigger for SCI
ioapic0 <Version 1.1> irqs 0-15 on motherboard
ioapic1 <Version 1.1> irqs 16-31 on motherboard
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <COMPAQ D13> on motherboard
acpi0: Power Button (fixed)
pci_link0: <ACPI PCI Link IUSB> on acpi0
pci_link1: <ACPI PCI Link IN16> on acpi0
pci_link2: <ACPI PCI Link IN17> on acpi0
pci_link3: <ACPI PCI Link IN18> on acpi0
pci_link4: <ACPI PCI Link IN19> on acpi0
pci_link5: <ACPI PCI Link IN20> on acpi0
pci_link6: <ACPI PCI Link IN21> on acpi0
pci_link7: <ACPI PCI Link IN22> on acpi0
Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000
acpi_timer0: <32-bit timer at 3.579545MHz> port 0x920-0x923 on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
pcib0: <ACPI Host-PCI bridge> on acpi0
pci0: <ACPI PCI bus> on pcib0
atapci0: <CMD 649 UDMA100 controller> port
0x2010-0x2017,0x2018-0x201b,0x2020-0x2027,0x2028-0x202b,0x2030-0x203f
irq 17 at device 2.0 on pci0
ata2: <ATA channel 0> on atapci0
ata3: <ATA channel 1> on atapci0
pci0: <display, VGA> at device 3.0 (no driver attached)
pci0: <base peripheral> at device 4.0 (no driver attached)
bge0: <Broadcom BCM5702 Gigabit Ethernet, ASIC rev. 0x1002> mem
0xf6fd0000-0xf6fdffff irq 19 at device 5.0 on pci0
miibus0: <MII bus> on bge0
brgphy0: <BCM5703 10/100/1000baseTX PHY> on miibus0
brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
bge0: Ethernet address: 00:12:79:92:0e:e9
bge1: <Broadcom BCM5702 Gigabit Ethernet, ASIC rev. 0x1002> mem
0xf6fc0000-0xf6fcffff irq 20 at device 6.0 on pci0
miibus1: <MII bus> on bge1
brgphy1: <BCM5703 10/100/1000baseTX PHY> on miibus1
brgphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
1000baseTX-FDX, auto
bge1: Ethernet address: 00:12:79:92:0e:e0
ciss0: <HP Smart Array 641> port 0x2800-0x28ff mem
0xf6fb0000-0xf6fb1fff,0xf6f40000-0xf6f7ffff irq 21 at device 7.0 on
pci0
ciss0: [GIANT-LOCKED]
isab0: <PCI-ISA bridge> at device 15.0 on pci0
isa0: <ISA bus> on isab0
atapci1: <ServerWorks CSB6 UDMA100 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x2000-0x200f at device 15.1 on
pci0
ata0: <ATA channel 0> on atapci1
ata1: <ATA channel 1> on atapci1
ohci0: <OHCI (generic) USB controller> mem 0xf6f30000-0xf6f30fff irq
15 at device 15.2 on pci0
ohci0: [GIANT-LOCKED]
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: (0x1166) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 4 ports with 4 removable, self powered
acpi_button0: <Power Button> on acpi0
acpi_tz0: <Thermal Zone> on acpi0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
sio0: <Standard PC COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
fdc0: <floppy drive controller (FDE)> port 0x3f2-0x3f5 irq 6 drq 2 on acpi0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem
0xc0000-0xc7fff,0xc8000-0xcbfff,0xcc000-0xcd7ff,0xee000-0xeffff on
isa0
ppc0: parallel port not found.
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounters tick every 1.000 msec
acd0: CDROM <CRN-8245B/2.19> at ata0-master PIO4
da0 at ciss0 bus 0 target 0 lun 0
da0: <COMPAQ RAID 1 VOLUME OK> Fixed Direct Access SCSI-0 device
da0: 135.168MB/s transfers
da0: 34998MB (71677440 512 byte sectors: 255H 32S/T 8784C)
SMP: AP CPU #1 Launched!
Trying to mount root from ufs:/dev/da0s1a
bge0: link state changed to UP
Offtopic: Robert notice the 2000+ interrupts/s per cpu on systat. Is
that normal?
--
Joao Barros
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