linux-2.6-rt patch on ppc and OOM messages

[Kumar Gala]

On Mar 29, 2006, at 12:45 AM, emre kara wrote:

> Dear All,
> Is Ingo Molnar's realtime-preempt patch compatible
> with ppc, or is there any work on a porting effort of
> this patch ? I have made some tests on a 85xx machine
> with this patch, under heavy load on ethernet
> interfaces, thw system prints OOM messages on console
> and hangs..
> Thanks.

Can you try setting the gfar interrupts to SA_INTERRUPT and see what  
happens.

- k

> --------------------------console output-----
> softirq-net-rx/: page allocation failure. order:0,
> mode:0x20
> Call Trace:
> [C04E3DB0] [C000A60C] show_stack+0x50/0x188
> (unreliable)
> [C04E3DE0] [C004C3EC] __alloc_pages+0x1c8/0x2a4
> [C04E3E30] [C0063C90] cache_alloc_refill+0x35c/0x57c
> [C04E3E80] [C0063FA4] __kmalloc+0xf4/0xfc
> [C04E3EB0] [C012D460] __alloc_skb+0x58/0x118
> [C04E3ED0] [C011AF20] gfar_new_skb+0x40/0xd4
> [C04E3EF0] [C011D320] gfar_clean_rx_ring+0x25c/0x634
> [C04E3F30] [C011D72C] gfar_poll+0x34/0x140
> [C04E3F50] [C013364C] net_rx_action+0x94/0x188
> [C04E3F80] [C0026730] ksoftirqd+0x104/0x1b4
> [C04E3FC0] [C003779C] kthread+0xf8/0x100
> [C04E3FF0] [C0004DB8] kernel_thread+0x44/0x60
> Mem-info:
> DMA per-cpu:
> cpu 0 hot: high 90, batch 15 used:0
> cpu 0 cold: high 30, batch 7 used:0
> DMA32 per-cpu: empty
> Normal per-cpu: empty
> HighMem per-cpu: empty
> Free pages:         768kB (0kB HighMem)
> Active:1650 inactive:2036 dirty:0 writeback:0
> unstable:0 free:192
> slab:60106 mapped:764 pagetables:29
> DMA free:768kB min:2048kB low:2560kB high:3072kB
> active:6600kB
> inactive:8144kB present:262144kB pages_scanned:0
> all_unreclaimab
> le? no
> lowmem_reserve[]: 0 0 0 0
> DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB
> inactive:0kB
> present:0kB pages_scanned:0 all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
> Normal free:0kB min:0kB low:0kB high:0kB active:0kB
> inactive:0kB
> present:0kB pages_scanned:0 all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
> HighMem free:0kB min:128kB low:128kB high:128kB
> active:0kB
> inactive:0kB present:0kB pages_scanned:0
> all_unreclaimable? no
> lowmem_reserve[]: 0 0 0 0
> DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 1*256kB
> 1*512kB 0*1024kB
> 0*2048kB 0*4096kB = 768kB
> DMA32: empty
> Normal: empty
> HighMem: empty
> Swap cache: add 0, delete 0, find 0/0, race 0+0
> Free swap  = 0kB
> Total swap = 0kB
> Free swap:            0kB
> 65536 pages of RAM
> 0 pages of HIGHMEM
> 662 free pages
> 1180 reserved pages
> 1249 pages shared
> 0 pages swap cached
> printk: 2159030 messages suppressed.
>
>
>
> 		
> ___________________________________________________________
> Yahoo! Photos – NEW, now offering a quality print service from just  
> 8p a photo http://uk.photos.yahoo.com
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev at ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev