Xen project Mailing List

Re: [Xen-devel] linux kernel 2.6.37

To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

From: Vasiliy G Tolstov <v.tolstov@xxxxxxxxx>

Date: Tue, 25 Jan 2011 19:33:14 +0300

Cc: Don Brearley <donbrearley@xxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx

Delivery-date: Tue, 25 Jan 2011 08:35:04 -0800

List-id: Xen developer discussion <xen-devel.lists.xensource.com>

On Tue, 2011-01-25 at 09:45 -0500, Konrad Rzeszutek Wilk wrote: > On Mon, Jan 24, 2011 at 11:19:02PM +0300, Vasiliy G Tolstov wrote: > > On Fri, 2011-01-21 at 19:16 +0300, Vasiliy G Tolstov wrote: > > > On Fri, 2011-01-21 at 10:30 -0500, Konrad Rzeszutek Wilk wrote: > > > > > > > Do you see any messages during bootup about memory being returned? Look > > > > for > > > > xen_release_chunk .. and pages freed ? > > [snip] > > > > Hello. Konrad, do You have any progress about this issue? > > Try booting your kernel with 'debug loglevel=10 memblock=debug'. I know that > at least > 64MB is used for SWIOTLB (which you don't need - you can disable that since > you are > not doing any PCI passthrough), 6MB for kernel + kernel data. The > "memblock=debug" will > give you the details to figure out who else is eating the big swaths of > memory. > Nice suggestion about swiotlb. Can You check my debug output and helps me to find what else eats memory? [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 2.6.37 (root@xxxxxxxxxxxxxxx) (gcc version 4.4.4 (Gentoo 4.4.4-r2 p1.2, pie-0.4.5) ) #1 SMP Thu Jan 6 00:29:34 UTC 2011 [ 0.000000] Command line: root=/dev/xvda1 tmem=1 console=hvc0 xencons=hvc0 earlyprintk=xen debug loglevel=10 elevator=noop memblock=debug iommu=off [ 0.000000] ACPI in unprivileged domain disabled [ 0.000000] released 0 pages of unused memory [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] Xen: 0000000000000000 - 00000000000a0000 (usable) [ 0.000000] Xen: 00000000000a0000 - 0000000000100000 (reserved) [ 0.000000] Xen: 0000000000100000 - 0000000100800000 (usable) [ 0.000000] bootconsole [xenboot0] enabled [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] DMI not present or invalid. [ 0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved) [ 0.000000] e820 remove range: 00000000000a0000 - 0000000000100000 (usable) [ 0.000000] No AGP bridge found [ 0.000000] last_pfn = 0x100800 max_arch_pfn = 0x400000000 [ 0.000000] last_pfn = 0x100000 max_arch_pfn = 0x400000000 [ 0.000000] memblock_x86_reserve_range: [0x016d3000-0x016defff] BRK [ 0.000000] MEMBLOCK configuration: [ 0.000000] memory size = 0x100790000 [ 0.000000] memory.cnt = 0x2 [ 0.000000] memory[0x0] [0x00000000010000-0x0000000009ffff], 0x90000 bytes [ 0.000000] memory[0x1] [0x00000000100000-0x000001007fffff], 0x100700000 bytes [ 0.000000] reserved.cnt = 0x4 [ 0.000000] reserved[0x0] [0x00000001000000-0x000000016d207f], 0x6d2080 bytes [ 0.000000] reserved[0x1] [0x000000016d3000-0x000000016defff], 0xc000 bytes [ 0.000000] reserved[0x2] [0x000000017fe000-0x00000001c4dfff], 0x450000 bytes [ 0.000000] reserved[0x3] [0x00000020000000-0x000001007fffff], 0xe0800000 bytes [ 0.000000] initial memory mapped : 0 - 027ff000 [ 0.000000] memblock_x86_reserve_range: [0x0009e000-0x0009ffff] TRAMPOLINE [ 0.000000] memblock_x86_reserve_range: [0x0009a000-0x0009dfff] ACPI WAKEUP [ 0.000000] init_memory_mapping: 0000000000000000-0000000100000000 [ 0.000000] 0000000000 - 0100000000 page 4k [ 0.000000] kernel direct mapping tables up to 100000000 @ 1ffa000-27ff000 [ 0.000000] memblock_x86_reserve_range: [0x01ffa000-0x027e8fff] PGTABLE [ 0.000000] init_memory_mapping: 0000000100000000-0000000100800000 [ 0.000000] 0100000000 - 0100800000 page 4k [ 0.000000] kernel direct mapping tables up to 100800000 @ 1f7f6000-20000000 [ 0.000000] memblock_x86_reserve_range: [0x1f7f6000-0x1f7fafff] PGTABLE [ 0.000000] RAMDISK: 017fe000 - 01b38000 [ 0.000000] No NUMA configuration found [ 0.000000] Faking a node at 0000000000000000-0000000100800000 [ 0.000000] Initmem setup node 0 0000000000000000-0000000100800000 [ 0.000000] memblock_x86_reserve_range: [0x1fffb000-0x1fffffff] NODE_DATA [ 0.000000] NODE_DATA [000000001fffb000 - 000000001fffffff] [ 0.000000] memblock_x86_reserve_range: [0x1fffa000-0x1fffafff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbfa000-0x1fff9fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbf9cc0-0x1fbf9fd7] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1f3f6000-0x1f7f5fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1b000000-0x1f1fffff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbf8000-0x1fbf8fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbf7000-0x1fbf7fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbf6000-0x1fbf6fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbf5000-0x1fbf5fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbf4000-0x1fbf4fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbf3000-0x1fbf3fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbf2000-0x1fbf2fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbf1000-0x1fbf1fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbf0000-0x1fbf0fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbef000-0x1fbeffff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbee000-0x1fbeefff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbed000-0x1fbedfff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbec000-0x1fbecfff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbeb000-0x1fbebfff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbea000-0x1fbeafff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbe9000-0x1fbe9fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbe8000-0x1fbe8fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbe7000-0x1fbe7fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbe6000-0x1fbe6fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbe5000-0x1fbe5fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbe4000-0x1fbe4fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbe3000-0x1fbe3fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbe2000-0x1fbe2fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbe1000-0x1fbe1fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbe0000-0x1fbe0fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbdf000-0x1fbdffff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbde000-0x1fbdefff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbdd000-0x1fbddfff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbdc000-0x1fbdcfff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbdb000-0x1fbdbfff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fbda000-0x1fbdafff] BOOTMEM [ 0.000000] memblock_x86_free_range: [0x1e9c0000-0x1f1fffff] [ 0.000000] memblock_x86_free_range: [0x1f3f6000-0x1f7f5fff] [ 0.000000] memblock_x86_free_range: [0x1fbfa000-0x1fff9fff] [ 0.000000] Zone PFN ranges: [ 0.000000] DMA 0x00000010 -> 0x00001000 [ 0.000000] DMA32 0x00001000 -> 0x00100000 [ 0.000000] Normal 0x00100000 -> 0x00100800 [ 0.000000] Movable zone start PFN for each node [ 0.000000] early_node_map[2] active PFN ranges [ 0.000000] 0: 0x00000010 -> 0x000000a0 [ 0.000000] 0: 0x00000100 -> 0x00100800 [ 0.000000] On node 0 totalpages: 1050512 [ 0.000000] DMA zone: 56 pages used for memmap [ 0.000000] DMA zone: 6 pages reserved [ 0.000000] DMA zone: 3922 pages, LIFO batch:0 [ 0.000000] memblock_x86_reserve_range: [0x1fff9e80-0x1fff9fff] BOOTMEM [ 0.000000] DMA32 zone: 14280 pages used for memmap [ 0.000000] DMA32 zone: 1030200 pages, LIFO batch:31 [ 0.000000] memblock_x86_reserve_range: [0x1ffe1e80-0x1fff9e7f] BOOTMEM [ 0.000000] Normal zone: 28 pages used for memmap [ 0.000000] Normal zone: 2020 pages, LIFO batch:0 [ 0.000000] memblock_x86_reserve_range: [0x1ffe1dc0-0x1ffe1e7f] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe0000-0x1ffe0fff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffdf000-0x1ffdffff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffde000-0x1ffdefff] BOOTMEM [ 0.000000] SMP: Allowing 14 CPUs, 0 hotplug CPUs [ 0.000000] No local APIC present [ 0.000000] APIC: disable apic facility [ 0.000000] APIC: switched to apic NOOP [ 0.000000] nr_irqs_gsi: 16 [ 0.000000] memblock_x86_reserve_range: [0x1ffe1cc0-0x1ffe1d9f] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe1c40-0x1ffe1ca7] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe1bc0-0x1ffe1c27] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe1b40-0x1ffe1ba7] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe1b00-0x1ffe1b1f] BOOTMEM [ 0.000000] PM: Registered nosave memory: 00000000000a0000 - 0000000000100000 [ 0.000000] PCI: Warning: Cannot find a gap in the 32bit address range [ 0.000000] PCI: Unassigned devices with 32bit resource registers may break! [ 0.000000] Allocating PCI resources starting at 100900000 (gap: 100900000:400000) [ 0.000000] Booting paravirtualized kernel on Xen [ 0.000000] Xen version: 4.0.0_21091_06-0.2 (preserve-AD) [ 0.000000] memblock_x86_reserve_range: [0x1ffe1a80-0x1ffe1afb] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe1a00-0x1ffe1a7b] BOOTMEM [ 0.000000] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:14 nr_node_ids:1 [ 0.000000] memblock_x86_reserve_range: [0x1ffdd000-0x1ffddfff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffdc000-0x1ffdcfff] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1fe62000-0x1ffdbfff] BOOTMEM [ 0.000000] PERCPU: Embedded 27 pages/cpu @ffff88001fe62000 s78656 r8192 d23744 u110592 [ 0.000000] memblock_x86_reserve_range: [0x1ffe19c0-0x1ffe19c7] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe1980-0x1ffe1987] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe1940-0x1ffe1977] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe18c0-0x1ffe192f] BOOTMEM [ 0.000000] pcpu-alloc: s78656 r8192 d23744 u110592 alloc=27*4096 [ 0.000000] pcpu-alloc: [0] 00 [0] 01 [0] 02 [0] 03 [0] 04 [0] 05 [0] 06 [0] 07 [ 0.000000] pcpu-alloc: [0] 08 [0] 09 [0] 10 [0] 11 [0] 12 [0] 13 [ 0.000000] memblock_x86_reserve_range: [0x1ffe17c0-0x1ffe18bf] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe1740-0x1ffe1787] BOOTMEM [ 0.000000] memblock_x86_reserve_range: [0x1ffe16c0-0x1ffe1707] BOOTMEM [ 0.000000] memblock_x86_free_range: [0x1ffdd000-0x1ffddfff] [ 0.000000] memblock_x86_free_range: [0x1ffdc000-0x1ffdcfff] [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 1036142 [ 0.000000] Policy zone: Normal [ 0.000000] Kernel command line: root=/dev/xvda1 tmem=1 console=hvc0 xencons=hvc0 earlyprintk=xen debug loglevel=10 elevator=noop memblock=debug iommu=off [ 0.000000] memblock_x86_reserve_range: [0x1fe5a000-0x1fe61fff] BOOTMEM [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes) [ 0.000000] Checking aperture... [ 0.000000] No AGP bridge found [ 0.000000] Subtract (25 early reservations) [ 0.000000] [000009a000-000009ffff] [ 0.000000] [0001000000-00016d207f] [ 0.000000] [00016d3000-00016defff] [ 0.000000] [00017fe000-0001c4dfff] [ 0.000000] [0001ffa000-00027e8fff] [ 0.000000] [001b000000-001e9bffff] [ 0.000000] [001f7f6000-001f7fafff] [ 0.000000] [001fbda000-001fbf8fff] [ 0.000000] [001fbf9cc0-001fbf9fd7] [ 0.000000] [001fe5a000-001ffdbfff] [ 0.000000] [001ffde000-001ffe0fff] [ 0.000000] [001ffe16c0-001ffe1707] [ 0.000000] [001ffe1740-001ffe1787] [ 0.000000] [001ffe17c0-001ffe192f] [ 0.000000] [001ffe1940-001ffe1977] [ 0.000000] [001ffe1980-001ffe1987] [ 0.000000] [001ffe19c0-001ffe19c7] [ 0.000000] [001ffe1a00-001ffe1a7b] [ 0.000000] [001ffe1a80-001ffe1afb] [ 0.000000] [001ffe1b00-001ffe1b1f] [ 0.000000] [001ffe1b40-001ffe1ba7] [ 0.000000] [001ffe1bc0-001ffe1c27] [ 0.000000] [001ffe1c40-001ffe1ca7] [ 0.000000] [001ffe1cc0-001ffe1d9f] [ 0.000000] [001ffe1dc0-01007fffff] [ 0.000000] Memory: 443276k/4202496k available (4125k kernel code, 448k absent, 3758772k reserved, 1636k data, 640k init) [ 0.000000] SLUB: Genslabs=15, HWalign=64, Order=0-3, MinObjects=0, CPUs=14, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU-based detection of stalled CPUs is disabled. [ 0.000000] NR_IRQS:4352 nr_irqs:384 16 [ 0.000000] Console: colour dummy device 80x25 [ 0.000000] console [tty0] enabled [ 0.000000] console [hvc0] enabled, bootconsole disabled [ 0.000000] allocated 43253760 bytes of page_cgroup [ 0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups [ 0.000000] Xen: using vcpuop timer interface [ 0.000000] installing Xen timer for CPU 0 [ 0.000000] Detected 2266.836 MHz processor. [ 0.004000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4533.67 BogoMIPS (lpj=9067344) [ 0.004000] pid_max: default: 32768 minimum: 301 [ 0.004000] Security Framework initialized [ 0.004000] SELinux: Initializing. [ 0.004000] SELinux: Starting in permissive mode [ 0.004000] AppArmor: AppArmor disabled by boot time parameter [ 0.004000] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes) [ 0.004000] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes) [ 0.004000] Mount-cache hash table entries: 256 [ 0.004000] Initializing cgroup subsys ns [ 0.004000] ns_cgroup deprecated: consider using the 'clone_children' flag without the ns_cgroup. [ 0.004000] Initializing cgroup subsys cpuacct [ 0.004000] Initializing cgroup subsys memory [ 0.004000] Initializing cgroup subsys devices [ 0.004000] Initializing cgroup subsys freezer [ 0.004000] Initializing cgroup subsys net_cls [ 0.004000] Initializing cgroup subsys blkio [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.004000] Performance Events: unsupported p6 CPU model 26 no PMU driver, software events only. [ 0.004000] SMP alternatives: switching to UP code [ 0.008069] cpu 0 spinlock event irq 382 [ 0.008382] installing Xen timer for CPU 1 [ 0.008398] cpu 1 spinlock event irq 376 [ 0.008428] SMP alternatives: switching to SMP code [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.012269] installing Xen timer for CPU 2 [ 0.012293] cpu 2 spinlock event irq 370 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.012656] installing Xen timer for CPU 3 [ 0.012674] cpu 3 spinlock event irq 364 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.013017] installing Xen timer for CPU 4 [ 0.013034] cpu 4 spinlock event irq 358 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.015738] installing Xen timer for CPU 5 [ 0.015768] cpu 5 spinlock event irq 352 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.016261] installing Xen timer for CPU 6 [ 0.016288] cpu 6 spinlock event irq 346 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.017027] installing Xen timer for CPU 7 [ 0.017052] cpu 7 spinlock event irq 340 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.017350] installing Xen timer for CPU 8 [ 0.017377] cpu 8 spinlock event irq 334 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.017714] installing Xen timer for CPU 9 [ 0.017740] cpu 9 spinlock event irq 328 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.018029] installing Xen timer for CPU 10 [ 0.018056] cpu 10 spinlock event irq 322 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.018286] installing Xen timer for CPU 11 [ 0.018313] cpu 11 spinlock event irq 316 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.018632] installing Xen timer for CPU 12 [ 0.018659] cpu 12 spinlock event irq 310 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.019058] installing Xen timer for CPU 13 [ 0.019084] cpu 13 spinlock event irq 304 [ 0.004000] CPU: Unsupported number of siblings 16 [ 0.019316] Brought up 14 CPUs [ 0.019398] devtmpfs: initialized [ 0.020299] Grant table initialized [ 0.020299] NET: Registered protocol family 16 [ 0.020513] PCI: setting up Xen PCI frontend stub [ 0.020521] PCI: pci_cache_line_size set to 64 bytes [ 0.028030] bio: create slab <bio-0> at 0 [ 0.028093] ACPI: Interpreter disabled. [ 0.028093] xen_balloon: Initialising balloon driver. [ 0.028367] last_pfn = 0x100800 max_arch_pfn = 0x400000000 [ 0.044669] vgaarb: loaded [ 0.044669] PCI: System does not support PCI [ 0.044669] PCI: System does not support PCI [ 0.044669] Switching to clocksource xen [ 0.044669] pnp: PnP ACPI: disabled [ 0.059138] NET: Registered protocol family 2 [ 0.059305] IP route cache hash table entries: 32768 (order: 6, 262144 bytes) [ 0.060283] TCP established hash table entries: 131072 (order: 9, 2097152 bytes) [ 0.061111] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes) [ 0.061422] TCP: Hash tables configured (established 131072 bind 65536) [ 0.061433] TCP reno registered [ 0.061457] UDP hash table entries: 2048 (order: 4, 65536 bytes) [ 0.061503] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes) [ 0.061703] NET: Registered protocol family 1 [ 0.061720] PCI: CLS 0 bytes, default 64 [ 0.061787] Unpacking initramfs... [ 0.065754] Freeing initrd memory: 3304k freed [ 0.067573] platform rtc_cmos: registered platform RTC device (no PNP device found) [ 0.079443] Intel AES-NI instructions are not detected. [ 0.079988] audit: initializing netlink socket (disabled) [ 0.080082] type=2000 audit(1295968813.070:1): initialized [ 0.080611] HugeTLB registered 2 MB page size, pre-allocated 0 pages [ 0.092066] VFS: Disk quotas dquot_6.5.2 [ 0.092278] Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 0.094579] fuse init (API version 7.15) [ 0.095184] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled [ 0.097683] SGI XFS Quota Management subsystem [ 0.098553] Btrfs loaded [ 0.098568] msgmni has been set to 872 [ 0.098796] SELinux: Registering netfilter hooks [ 0.099798] io scheduler noop registered (default) [ 0.099808] io scheduler deadline registered [ 0.099964] io scheduler cfq registered [ 0.100226] pci-stub: invalid id string "" [ 0.109773] Console: switching to colour frame buffer device 100x37 [ 0.113403] Event-channel device installed. [ 0.115096] Non-volatile memory driver v1.3 [ 0.115342] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 0.376418] Initialising Xen virtual ethernet driver. [ 0.378610] Equalizer2002: Simon Janes (simon@xxxxxxx) and David S. Miller (davem@xxxxxxxxxx) [ 0.379119] console [netcon0] enabled [ 0.379155] netconsole: network logging started [ 0.380636] PNP: No PS/2 controller found. Probing ports directly. [ 0.382550] i8042.c: No controller found. [ 0.384154] mice: PS/2 mouse device common for all mice [ 0.387897] input: Xen Virtual Keyboard as /devices/virtual/input/input0 [ 0.389874] input: Xen Virtual Pointer as /devices/virtual/input/input1 [ 0.394445] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0 [ 0.395599] rtc_cmos: probe of rtc_cmos failed with error -38 [ 0.397054] cpuidle: using governor ladder [ 0.398111] cpuidle: using governor menu [ 0.399227] Netfilter messages via NETLINK v0.30. [ 0.400562] IPv4 over IPv4 tunneling driver [ 0.402211] GRE over IPv4 demultiplexor driver [ 0.402289] Initializing XFRM netlink socket [ 0.404255] NET: Registered protocol family 17 [ 0.405227] Registering the dns_resolver key type [ 0.406866] registered taskstats version 1 [ 0.407802] IMA: No TPM chip found, activating TPM-bypass! [ 0.481165] blkfront: xvda: barriers enabled [ 0.499229] xvda: xvda1 [ 0.588349] blkfront: xvdb: barriers enabled [ 0.617933] xvdb: xvdb1 [ 0.708239] XENBUS: Device with no driver: device/console/0 [ 0.709469] Freeing unused kernel memory: 640k freed [ 0.758412] EXT3-fs: barriers not enabled [ 0.773576] kjournald starting. Commit interval 5 seconds [ 0.773618] EXT3-fs (xvda1): mounted filesystem with writeback data mode [ 2.098341] NET: Registered protocol family 10 [ 2.099747] lo: Disabled Privacy Extensions [ 2.100923] tunl0: Disabled Privacy Extensions [ 3.398405] EXT3-fs (xvda1): using internal journal > Is this also a problem if you boot the guest as HVM? Not. Now i'm use only PVM mode. > What happens if you boot your > PV guest without 'maxmem=4096' and .. oh, I think I know why this is > happening = the > kernel allocates pagetables as if you have 4GB of memory and that eats much > of low memory. > If you decrease the 'maxmem' you should see a smaller amount being used. I understand this. Does xen PVM 2.6.37 have any features that can be disabled to free memory? _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel

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