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Hi guys<br><br>I have am using FC11 64bit on Host and same OS on KVM based guest machine. I am using TAP based routing network inside host. I am using virtio network driver for my guest machine<br><br>When i transfer huge data via rsync from another live host my guest machine got halt with following errors in log. I need to restart network service to make guest VM back. <br><br>With 512M RAM for guest VM, it got halt for 5G data transffer via rsync<br>With 1G RAM for guest VM, it got halt if i try to shift 15G data transffer via rsync<br><br>Aug 28 12:43:08 phili-p kernel: swapper: page allocation failure. order:0, mode:0x20<br>Aug 28 12:43:08 phili-p kernel: Pid: 0, comm: swapper Not tainted 2.6.29.6-217.2.8.fc11.x86_64 #1<br>Aug 28 12:43:08 phili-p kernel: Call Trace:<br>Aug 28 12:43:08 phili-p kernel: <IRQ> [<ffffffff810a50c8>] __alloc_pages_internal+0x40d/0x429<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff810c7311>] alloc_pages_current+0xb7/0xc0<br>Aug 28 12:43:08 phili-p kernel: [<ffffffffa0057913>] try_fill_recv+0xa8/0x18d [virtio_net]<br>Aug 28 12:43:08 phili-p kernel: [<ffffffffa00584a7>] virtnet_poll+0x518/0x57d [virtio_net]<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff8130eccd>] net_rx_action+0xb7/0x1b1<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff8104df7f>] __do_softirq+0x94/0x155<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff8101274c>] call_softirq+0x1c/0x30<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff810138ce>] do_softirq+0x52/0xb9<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff8104dba2>] irq_exit+0x53/0x90<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff81013bf7>] do_IRQ+0x12c/0x151<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff81011e93>] ret_from_intr+0x0/0x2e<br>Aug 28 12:43:08 phili-p kernel: <EOI> [<ffffffff8102942c>] ? native_safe_halt+0xb/0xd<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff81017d30>] ? default_idle+0x51/0x7c<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff813af519>] ? atomic_notifier_call_chain+0x13/0x15<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff81010237>] ? enter_idle+0x27/0x29<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff810102a1>] ? cpu_idle+0x68/0xb3<br>Aug 28 12:43:08 phili-p kernel: [<ffffffff81398367>] ? rest_init+0x6b/0x6d<br>Aug 28 12:43:08 phili-p kernel: Mem-Info:<br>Aug 28 12:43:08 phili-p kernel: Node 0 DMA per-cpu:<br>Aug 28 12:43:08 phili-p kernel: CPU 0: hi: 0, btch: 1 usd: 0<br>Aug 28 12:43:08 phili-p kernel: Node 0 DMA32 per-cpu:<br>Aug 28 12:43:08 phili-p kernel: CPU 0: hi: 186, btch: 31 usd: 191<br>Aug 28 12:43:08 phili-p kernel: Active_anon:5593 active_file:26509 inactive_anon:7932<br>Aug 28 12:43:08 phili-p kernel: inactive_file:177229 unevictable:0 dirty:16171 writeback:52 unstable:0<br>Aug 28 12:43:08 phili-p kernel: free:1334 slab:10907 mapped:3728 pagetables:1340 bounce:0<br>Aug 28 12:43:08 phili-p kernel: Node 0 DMA free:3892kB min:24kB low:28kB high:36kB active_anon:0kB inactive_anon:0kB active_file:24kB inactive_file:4024kB unevictable:0kB present:6368kB pages_scanned:0 all_unreclaimable? no<br>Aug 28 12:43:08 phili-p kernel: lowmem_reserve[]: 0 970 970 970<br>Aug 28 12:43:08 phili-p kernel: Node 0 DMA32 free:1444kB min:3972kB low:4964kB high:5956kB active_anon:22372kB inactive_anon:31728kB active_file:106012kB inactive_file:704892kB unevictable:0kB present:993776kB pages_scanned:0 all_unreclaimable? no<br>Aug 28 12:43:08 phili-p kernel: lowmem_reserve[]: 0 0 0 0<br>Aug 28 12:43:08 phili-p kernel: Node 0 DMA: 1*4kB 0*8kB 1*16kB 1*32kB 0*64kB 0*128kB 1*256kB 1*512kB 1*1024kB 1*2048kB 0*4096kB = 3892kB<br>Aug 28 12:43:08 phili-p kernel: Node 0 DMA32: 1*4kB 0*8kB 1*16kB 0*32kB 0*64kB 1*128kB 1*256kB 0*512kB 1*1024kB 0*2048kB 0*4096kB = 1428kB<br>Aug 28 12:43:08 phili-p kernel: 203802 total pagecache pages<br>Aug 28 12:43:08 phili-p kernel: 0 pages in swap cache<br>Aug 28 12:43:08 phili-p kernel: Swap cache stats: add 0, delete 0, find 0/0<br>Aug 28 12:43:08 phili-p kernel: Free swap = 2096440kB<br>Aug 28 12:43:08 phili-p kernel: Total swap = 2096440kB<br>Aug 28 12:43:08 phili-p kernel: 255984 pages RAM<br>Aug 28 12:43:08 phili-p kernel: 8458 pages reserved<br>Aug 28 12:43:08 phili-p kernel: 214776 pages shared<br>Aug 28 12:43:08 phili-p kernel: 43672 pages non-shared<br><br>Note: i want to use my VM for heavy rsync backups. Experts are request to have some solution for the problem<br><br><br>Regards, Mateen<br><br /><hr />HotmailŪ is up to 70% faster. Now good news travels really fast. <a href='http://windowslive.com/online/hotmail?ocid=PID23391::T:WLMTAGL:ON:WL:en-US:WM_HYGN_faster:082009' target='_new'>Try it now.</a></body>
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