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[Xen-fr] Perte de mémoire en dom0

To: xen-fr@xxxxxxxxxxxxxxxxxxx
From: Uncle Costa <unclecosta@xxxxxxxxx>
Date: Tue, 15 Feb 2011 18:12:20 +0100
Delivery-date: Tue, 15 Feb 2011 09:12:41 -0800
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Bonjour,

J'ai cherchét essayées multiples solutions trouvé sur internet, mais comme rien n'y fait et que je ne trouve pas de raison àe souci je viens vers vous.

Comme dit dans le sujet mon souci est que le dom0 perds environ 2Gb de RAM. Sur ma machine j'ai 4G et lorsque je lance le le dom0 et que je fais un free -m j'ai comme retour que je n'ai que 2Gb.

Ce que je comprends pas c'est que Xen voit au dérrage les 4Gb.

J'ai essayée modifier le nb ram allouéu dom0 via dom0_mem, mais rien n'y fait.

J'espè que vous pourrez m'aider.

Merci.

ps: je vous joins au mail certaines informations pertinentes.

-------8<-------8<-------8<-------8<-------8<-------8<-------8<-------8<-------8<-------8<-------8<-------8<-------8<-------8<--------

free -m:

total used free shared buffers cached

Mem: 2971 1290 1681 0 33 524

-/+ buffers/cache: 732 2239

Swap: 7153 0 7153

xm list:

Name ID Mem VCPUs State Time(s)

Domain-0 0 3067 2 r----- 289.0

xm info:

root@testxen-squeeze:~# cat xm-info.2.6.32-5-xen-amd64

host : testxen-squeeze

release : 2.6.32-5-xen-amd64

version : #1 SMP Wed Jan 12 05:46:49 UTC 2011

machine : x86_64

nr_cpus : 2

nr_nodes : 1

cores_per_socket : 2

threads_per_core : 1

cpu_mhz : 1296

hw_caps : bfebfbff:20100800:00000000:00000940:0000e39d:00000000:00000001:00000000

virt_caps :

total_memory : 3998

free_memory : 881

node_to_cpu : node0:0-1

node_to_memory : node0:881

node_to_dma32_mem : node0:815

max_node_id : 0

xen_major : 4

xen_minor : 0

xen_extra : .1

xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p

xen_scheduler : credit

xen_pagesize : 4096

platform_params : virt_start=0xffff800000000000

xen_changeset : unavailable

xen_commandline : placeholder iommu_inclusive_mapping=1 dom0_mem=3998M iommu=off

cc_compiler : gcc version 4.4.5 (Debian 4.4.5-10)

cc_compile_by : waldi

cc_compile_domain : debian.org

cc_compile_date : Wed Jan 12 14:04:06 UTC 2011

xend_config_format : 4

xm dmesg:

(XEN) Xen version 4.0.1 (Debian 4.0.1-2) (waldi@xxxxxxxxxx) (gcc version 4.4.5 (Debian 4.4.5-10) ) Wed Jan 12 14:04:06 UTC 2011

(XEN) Bootloader: GRUB 1.98+20100804-14

(XEN) Command line: placeholder iommu_inclusive_mapping=1 dom0_mem=3998M iommu=off

(XEN) Video information:

(XEN) VGA is text mode 80x25, font 8x16

(XEN) VBE/DDC methods: V2; EDID transfer time: 1 seconds

(XEN) Disc information:

(XEN) Found 1 MBR signatures

(XEN) Found 1 EDD information structures

(XEN) Xen-e820 RAM map:

(XEN) 0000000000000000 - 000000000009e000 (usable)

(XEN) 000000000009e000 - 00000000000a0000 (reserved)

(XEN) 00000000000e0000 - 0000000000100000 (reserved)

(XEN) 0000000000100000 - 00000000b9e5f000 (usable)

(XEN) 00000000b9e5f000 - 00000000b9ebf000 (reserved)

(XEN) 00000000b9ebf000 - 00000000b9f71000 (usable)

(XEN) 00000000b9f71000 - 00000000b9fbf000 (ACPI NVS)

(XEN) 00000000b9fbf000 - 00000000b9fdf000 (usable)

(XEN) 00000000b9fdf000 - 00000000b9ff7000 (ACPI data)

(XEN) 00000000b9ff7000 - 00000000ba000000 (usable)

(XEN) 00000000ba000000 - 00000000c0000000 (reserved)

(XEN) 00000000f8000000 - 00000000fc000000 (reserved)

(XEN) 00000000fec00000 - 00000000fec01000 (reserved)

(XEN) 00000000fed10000 - 00000000fed14000 (reserved)

(XEN) 00000000fed18000 - 00000000fed1a000 (reserved)

(XEN) 00000000fed1c000 - 00000000fed20000 (reserved)

(XEN) 00000000fee00000 - 00000000fee01000 (reserved)

(XEN) 00000000ffe00000 - 0000000100000000 (reserved)

(XEN) 0000000100000000 - 0000000140000000 (usable)

(XEN) ACPI: RSDP 000FE020, 0024 (r2 ACRSYS)

(XEN) ACPI: XSDT B9FF6120, 0084 (r1 ACRSYS ACRPRDCT 1 1000013)

(XEN) ACPI: FACP B9FF4000, 00F4 (r4 ACRSYS ACRPRDCT 1 1025 1000013)

(XEN) ACPI: DSDT B9FE7000, 8FEB (r1 ACRSYS ACRPRDCT 1 1025 1000013)

(XEN) ACPI: FACS B9F7E000, 0040

(XEN) ACPI: DMAR B9FF5000, 00E8 (r1 1 0)

(XEN) ACPI: HPET B9FF3000, 0038 (r1 ACRSYS ACRPRDCT 1 1025 1000013)

(XEN) ACPI: APIC B9FF2000, 006C (r2 ACRSYS ACRPRDCT 1 1025 1000013)

(XEN) ACPI: MCFG B9FF1000, 003C (r1 ACRSYS ACRPRDCT 1 1025 1000013)

(XEN) ACPI: ASF! B9FF0000, 00A5 (r32 ACRSYS ACRPRDCT 1 1025 1000013)

(XEN) ACPI: SLIC B9FE6000, 0176 (r1 ACRSYS ACRPRDCT 1 1025 1000013)

(XEN) ACPI: BOOT B9FE5000, 0028 (r1 ACRSYS ACRPRDCT 1 1025 1000013)

(XEN) ACPI: SSDT B9FE4000, 00A7 (r1 ACRSYS ACRPRDCT 1000 1025 20051117)

(XEN) ACPI: SSDT B9FE1000, 0655 (r1 PmRef CpuPm 3000 INTL 20051117)

(XEN) ACPI: SSDT B9FE0000, 0259 (r1 PmRef Cpu0Tst 3000 INTL 20051117)

(XEN) ACPI: SSDT B9FDF000, 020F (r1 PmRef ApTst 3000 INTL 20051117)

(XEN) System RAM: 3998MB (4094816kB)

(XEN) Domain heap initialised

(XEN) Processor #0 7:7 APIC version 20

(XEN) Processor #1 7:7 APIC version 20

(XEN) IOAPIC[0]: apic_id 4, version 32, address 0xfec00000, GSI 0-23

(XEN) Enabling APIC mode: Flat. Using 1 I/O APICs

(XEN) Using scheduler: SMP Credit Scheduler (credit)

(XEN) Detected 1296.922 MHz processor.

(XEN) Initing memory sharing.

(XEN) I/O virtualisation disabled

(XEN) Total of 2 processors activated.

(XEN) ENABLING IO-APIC IRQs

(XEN) -> Using new ACK method

(XEN) checking TSC synchronization across 2 CPUs: passed.

(XEN) Platform timer is 14.318MHz HPET

(XEN) Allocated console ring of 16 KiB.

(XEN) Brought up 2 CPUs

(XEN) *** LOADING DOMAIN 0 ***

(XEN) Xen kernel: 64-bit, lsb, compat32

(XEN) Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x16b8000

(XEN) PHYSICAL MEMORY ARRANGEMENT:

(XEN) Dom0 alloc.: 0000000138000000->000000013c000000 (994571 pages to be allocated)

(XEN) VIRTUAL MEMORY ARRANGEMENT:

(XEN) Loaded kernel: ffffffff81000000->ffffffff816b8000

(XEN) Init. ramdisk: ffffffff816b8000->ffffffff83239400

(XEN) Phys-Mach map: ffffffff8323a000->ffffffff839f0858

(XEN) Start info: ffffffff839f1000->ffffffff839f14b4

(XEN) Page tables: ffffffff839f2000->ffffffff83a13000

(XEN) Boot stack: ffffffff83a13000->ffffffff83a14000

(XEN) TOTAL: ffffffff80000000->ffffffff83c00000

(XEN) ENTRY ADDRESS: ffffffff81508200

(XEN) Dom0 has maximum 2 VCPUs

(XEN) Scrubbing Free RAM: done.

(XEN) Xen trace buffers: t_info allocation failed! Tracing disabled.

(XEN) Std. Loglevel: Errors and warnings

(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)

(XEN) Xen is relinquishing VGA console.

(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to Xen)

(XEN) Freed 176kB init memory.

cat /proc/cpuinfo:

processor : 0

vendor_id : GenuineIntel

cpu family : 6

model : 23

model name : Genuine Intel(R) CPU U4100 @ 1.30GHz

stepping : 10

cpu MHz : 1296.922

cache size : 2048 KB

fpu : yes

fpu_exception : yes

cpuid level : 13

wp : yes

flags : fpu de tsc msr pae mce cx8 apic sep mtrr mca cmov pat clflush acpi mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good aperfmperf pni est ssse3 cx16 hypervisor lahf_lm

bogomips : 2593.84

clflush size : 64

cache_alignment : 64

address sizes : 36 bits physical, 48 bits virtual

power management:

processor : 1