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snIP3r
l33t
l33t


Joined: 21 May 2004
Posts: 853
Location: germany

PostPosted: Sun May 04, 2008 11:18 am    Post subject: 3dm2 page allocation failure Reply with quote

hi all!

today i got this message in my logs:
Code:

3dm2: page allocation failure. order:0, mode:0x10d0

Call Trace:
 [<ffffffff80252ed2>] __alloc_pages+0x294/0x2ad
 [<ffffffff80210b18>] dma_alloc_pages+0xac/0xd0
 [<ffffffff80210bbb>] dma_alloc_coherent+0x7f/0x1d4
 [<ffffffff8048f79d>] twa_chrdev_ioctl+0xc6/0x671
 [<ffffffff80275259>] chrdev_open+0x0/0x196
 [<ffffffff80271500>] __dentry_open+0x101/0x1aa
 [<ffffffff8027d7ed>] do_ioctl+0x55/0x6b
 [<ffffffff8027da50>] vfs_ioctl+0x24d/0x266
 [<ffffffff8027daa5>] sys_ioctl+0x3c/0x5f
 [<ffffffff8020b2be>] system_call+0x7e/0x83

Mem-info:
Node 0 DMA per-cpu:
CPU    0: Hot: hi:    0, btch:   1 usd:   0   Cold: hi:    0, btch:   1 usd:   0
CPU    1: Hot: hi:    0, btch:   1 usd:   0   Cold: hi:    0, btch:   1 usd:   0
Node 0 DMA32 per-cpu:
CPU    0: Hot: hi:  186, btch:  31 usd:   1   Cold: hi:   62, btch:  15 usd:  59
CPU    1: Hot: hi:  186, btch:  31 usd:  30   Cold: hi:   62, btch:  15 usd:   9
Active:276652 inactive:139112 dirty:148 writeback:13096 unstable:0
 free:3037 slab:80625 mapped:7101 pagetables:2677 bounce:0
Node 0 DMA free:8020kB min:24kB low:28kB high:36kB active:900kB inactive:0kB present:8784kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 2003 2003 2003
Node 0 DMA32 free:4128kB min:5712kB low:7140kB high:8568kB active:1105708kB inactive:556448kB present:2051184kB pages_scanned:68 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 1*4kB 0*8kB 1*16kB 0*32kB 1*64kB 0*128kB 1*256kB 1*512kB 1*1024kB 1*2048kB 1*4096kB = 8020kB
Node 0 DMA32: 16*4kB 0*8kB 1*16kB 0*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 1*2048kB 0*4096kB = 4112kB
Swap cache: add 988, delete 979, find 332/415, race 0+0
Free swap  = 3911436kB
Total swap = 3911816kB
Free swap:       3911436kB
524000 pages of RAM
9017 reserved pages
230536 pages shared
9 pages swap cached


after googling i found this link:
http://www.3ware.com/KB/Article.aspx?id=15160

so i wonder if it is safe to do something like this:
Code:

echo 4096 >> /proc/sys/vm/min_free_kbytes

and also make an entry in /etc/sysctl.conf
Code:

vm.min_free_kbytes=4096


or is there another way to fix this issue?

thx in advance

snIP3r
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