Re: swap is never used on ultrasparc64/32 - 2.6.11-rc2 (STILL NOT SOLVED)

[Grzegorz Piotr Jaskiewicz <gj@pointblue.com.pl>]

Odd, see this:


[root@smark root]# cat /proc/meminfo
MemTotal:       123496 kB
MemFree:         61104 kB
Buffers:          6776 kB
Cached:          16752 kB
SwapCached:          0 kB
Active:          36280 kB
Inactive:        11824 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:       123496 kB
LowFree:         61104 kB
SwapTotal:      127984 kB
SwapFree:       127984 kB
Dirty:             360 kB
Writeback:          48 kB
Mapped:       18446744073652757328 kB
Slab:             6912 kB
CommitLimit:    189728 kB
Committed_AS:    46032 kB
PageTables:        952 kB
VmallocTotal:  3145728 kB
VmallocUsed:      1520 kB
VmallocChunk:  3144176 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:      512 kB


Grzegorz Piotr Jaskiewicz wrote:
> I've 2.6.11-rc2 sparc64 kernel, userland is 32bits.
> 
> I was compiling few things, fired up firefox, and kaboom. No memory.
> 
> Meanwhile, I runned swapoff -a, mkswap -v1 /dev/hda2 , swapon -a, and 
> tried to replace swap partition with swap file, which didn't worked either.
> Here's dmesg:
> 
> oom-killer: gfp_mask=0x1d2
> DMA per-cpu:
> cpu 0 hot: low 6, high 18, batch 3
> cpu 0 cold: low 0, high 6, batch 3
> Normal per-cpu: empty
> HighMem per-cpu: empty
> 
> Free pages:        3520kB (0kB HighMem)
> Active:28 inactive:13023 dirty:0 writeback:0 unstable:0 free:440 
> slab:908 mapped:18446744073704443093 pagetables:167
> DMA free:3520kB min:1408kB low:1760kB high:2112kB active:224kB 
> inactive:104184kB present:125192kB pages_scanned:0 all_unreclaimable? no
> protections[]: 0 0 0
> Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB 
> present:0kB pages_scanned:0 all_unreclaimable? no
> protections[]: 0 0 0
> HighMem free:0kB min:256kB low:320kB high:384kB active:0kB inactive:0kB 
> present:0kB pages_scanned:0 all_unreclaimable? no
> protections[]: 0 0 0
> DMA: 240*8kB 14*16kB 1*32kB 1*64kB 2*128kB 2*256kB 1*512kB 0*1024kB 
> 0*2048kB 0*4096kB 0*8192kB = 3520kB
> Normal: empty
> HighMem: empty
> Swap cache: add 310, delete 310, find 41/50, race 0+0
> Out of Memory: Killed process 15926 (mozilla-bin).
> Out of Memory: Killed process 15923 (mozilla-bin).
> Out of Memory: Killed process 15927 (mozilla-bin).
> Out of Memory: Killed process 15931 (mozilla-bin).
> ioctl32(esd:16474): Unknown cmd fd(10) cmd(40045500){00} arg(efffe35c) 
> on /dev/snd/controlC0
> oom-killer: gfp_mask=0x1d2
> DMA per-cpu:
> cpu 0 hot: low 6, high 18, batch 3
> cpu 0 cold: low 0, high 6, batch 3
> Normal per-cpu: empty
> HighMem per-cpu: empty
> 
> Free pages:        2312kB (0kB HighMem)
> Active:14 inactive:13186 dirty:0 writeback:0 unstable:0 free:289 
> slab:895 mapped:18446744073704347582 pagetables:161
> DMA free:2312kB min:1408kB low:1760kB high:2112kB active:112kB 
> inactive:105488kB present:125192kB pages_scanned:0 all_unreclaimable? no
> protections[]: 0 0 0
> Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB 
> present:0kB pages_scanned:0 all_unreclaimable? no
> protections[]: 0 0 0
> HighMem free:0kB min:256kB low:320kB high:384kB active:0kB inactive:0kB 
> present:0kB pages_scanned:0 all_unreclaimable? no
> protections[]: 0 0 0
> DMA: 95*8kB 11*16kB 1*32kB 1*64kB 2*128kB 2*256kB 1*512kB 0*1024kB 
> 0*2048kB 0*4096kB 0*8192kB = 2312kB
> Normal: empty
> HighMem: empty
> Swap cache: add 310, delete 310, find 41/50, race 0+0
> Out of Memory: Killed process 16456 (firefox-bin).
> Out of Memory: Killed process 16450 (firefox-bin).
> Out of Memory: Killed process 16457 (firefox-bin).
> Out of Memory: Killed process 16461 (firefox-bin).
> Adding 249936k swap on /dev/hda2.  Priority:-2 extents:1
> ioctl32(esd:16742): Unknown cmd fd(10) cmd(40045500){00} arg(efffe35c) 
> on /dev/snd/controlC0
> Adding 127984k swap on /swap.  Priority:-3 extents:5
> 
> 
> 
> top shows that swap memory is present, but it never get used.
>