REMINDER: WLUG meeting tonight!
by Meeting Reminder Bot
There's a WLUG meeting tonight:
----------------------------------------------------------------------
7:30pm, TW.2.05 (http://www.wlug.org.nz/TW).
Linux gaming: James and Bruce will present some Games that run on Linux, either natively or under Windows compatibility wrappers like Wine.
12 years, 7 months
Kernel Killer
by elroy
Has anyone seen this before?
I'm pretty sure I know what it is :-)
How I did it:
Select ~4,000 image files in file manager (to delete) - but with 'Show
As Thumbnail' selected - managed to kill an E6300 (Dual-Core 1.86GHz
w/2GB RAM and 2GB SWAP).
Questions:
==========
a) Is this a case of the kernel running out of physical AND virtual memory?
b) I have a SWAP file size of
"
cat /proc/swaps
Filename Type Size Used
Priority
/dev/sdb2 partition 3903784 0 -1
"
Should be ~4GB - but 'top' was only showing 2GB in-use/useable - should
I have split the 4GB into 2x 2GB SWAP partitions for GNU/Linux to
utilise it all?
c) Can anyone explain in nice laymans terms the correct use of the 'Alt
+ SysReq' and 'Alt + S' and 'Alt + U' and 'Alt + B' key sequence (I used
this to (I think) tell the machine to safely shut down).
Cheers,
Elroy.
> [ 5756.653718] passkey-agent invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0
> [ 5756.653741] [<c015a915>] out_of_memory+0x175/0x1b0
> [ 5756.653759] [<c015c364>] __alloc_pages+0x2e4/0x340
> [ 5756.653770] [<c015db69>] __do_page_cache_readahead+0x109/0x250
> [ 5756.653781] [<c02ed622>] io_schedule+0x22/0x30
> [ 5756.653787] [<c02ed8cb>] __wait_on_bit_lock+0x5b/0x70
> [ 5756.653790] [<c01570d0>] sync_page+0x0/0x40
> [ 5756.653799] [<c01570b3>] __lock_page+0x73/0x80
> [ 5756.653809] [<c0159b13>] filemap_nopage+0x2c3/0x3a0
> [ 5756.653820] [<c01643ea>] __handle_mm_fault+0x14a/0xa40
> [ 5756.653825] [<c0102236>] __switch_to+0xc6/0x1f0
> [ 5756.653842] [<c02f0658>] do_page_fault+0x128/0x600
> [ 5756.653854] [<c02f0530>] do_page_fault+0x0/0x600
> [ 5756.653859] [<c02eed0c>] error_code+0x7c/0x90
> [ 5756.653872] =======================
> [ 5756.653873] Mem-info:
> [ 5756.653875] DMA per-cpu:
> [ 5756.653877] CPU 0: Hot: hi: 0, btch: 1 usd: 0 Cold: hi: 0, btch: 1 usd: 0
> [ 5756.653880] CPU 1: Hot: hi: 0, btch: 1 usd: 0 Cold: hi: 0, btch: 1 usd: 0
> [ 5756.653882] Normal per-cpu:
> [ 5756.653884] CPU 0: Hot: hi: 186, btch: 31 usd: 38 Cold: hi: 62, btch: 15 usd: 60
> [ 5756.653887] CPU 1: Hot: hi: 186, btch: 31 usd: 59 Cold: hi: 62, btch: 15 usd: 61
> [ 5756.653888] HighMem per-cpu:
> [ 5756.653890] CPU 0: Hot: hi: 186, btch: 31 usd: 143 Cold: hi: 62, btch: 15 usd: 45
> [ 5756.653893] CPU 1: Hot: hi: 186, btch: 31 usd: 121 Cold: hi: 62, btch: 15 usd: 23
> [ 5756.653897] Active:247244 inactive:246390 dirty:0 writeback:0 unstable:0 free:12228 slab:5093 mapped:650 pagetables:2205
> [ 5756.653901] DMA free:8128kB min:68kB low:84kB high:100kB active:600kB inactive:708kB present:16256kB pages_scanned:2015 all_unreclaimable? yes
> [ 5756.653903] lowmem_reserve[]: 0 873 2015
> [ 5756.653908] Normal free:40296kB min:3744kB low:4680kB high:5616kB active:408760kB inactive:407108kB present:894080kB pages_scanned:1419965 all_unreclaimable? yes
> [ 5756.653911] lowmem_reserve[]: 0 0 9139
> [ 5756.653915] HighMem free:488kB min:512kB low:1736kB high:2960kB active:579616kB inactive:577744kB present:1169800kB pages_scanned:1908817 all_unreclaimable? yes
> [ 5756.653918] lowmem_reserve[]: 0 0 0
> [ 5756.653920] DMA: 2*4kB 49*8kB 61*16kB 29*32kB 13*64kB 5*128kB 5*256kB 0*512kB 1*1024kB 1*2048kB 0*4096kB = 8128kB
> [ 5756.653928] Normal: 32*4kB 23*8kB 13*16kB 17*32kB 91*64kB 5*128kB 2*256kB 7*512kB 14*1024kB 5*2048kB 1*4096kB = 40296kB
> [ 5756.653936] HighMem: 8*4kB 9*8kB 0*16kB 0*32kB 0*64kB 1*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 488kB
> [ 5756.653945] Swap cache: add 1476597, delete 1476597, find 120489/168440, race 4+39
> [ 5756.653947] Free swap = 0kB
> [ 5756.653948] Total swap = 3903784kB
> [ 5756.653950] Free swap: 0kB
> [ 5756.658573] 524128 pages of RAM
> [ 5756.658575] 294752 pages of HIGHMEM
> [ 5756.658576] 5910 reserved pages
> [ 5756.658577] 3523 pages shared
> [ 5756.658579] 0 pages swap cached
> [ 5756.658580] 0 pages dirty
> [ 5756.658581] 0 pages writeback
> [ 5756.658582] 650 pages mapped
> [ 5756.658584] 5093 pages slab
> [ 5756.658585] 2205 pages pagetables
12 years, 7 months
WLUG members
by Simon Green
Hi all,
For those that are WLUG members, this is a friendly reminder that your
2007-08 subs are now due. There are three easy payment methods:
1) Bring $20 cash or a cheque to the WLUG meeting tomorrow night. You
will be issued with a receipt
2) Pay via Internet banking, or at an ASB branch. Please make sure
your login name or real name is used as a reference. The WLUG bank
account number is available at https://secure.wlug.org.nz/join.html
3) Send a cheque to WLUG, PO Box 21051, Hamilton 3249. Make sure that
your user name is on the back of the cheque.
Reminder notices will be sent out in a fortnight for current members
who have not paid. If you are not a member of WLUG, now is an
excellent time to think about joining. It is only $20 per year, and
you'll be supporting a good cause.
Benefits of membership as well as information on how you can sign up
can be found at:
https://secure.wlug.org.nz/join.html
And finally for those that have already paid their 2007-08 membership,
thank you very much
Simon Green
WLUG Membership Manager
membership(a)wlug.org.nz
12 years, 7 months
REMINDER: WLUG meeting is on Monday
by Meeting Reminder Bot
There's a Waikato Linux Users Group meeting on Monday:
----------------------------------------------------------------------
7:30pm, TW.2.05 (http://www.wlug.org.nz/TW).
Linux gaming: James and Bruce will present some Games that run on Linux, either natively or under Windows compatibility wrappers like Wine.
12 years, 7 months
Mounting an image
by Chris O'Halloran
Two weeks ago, I discovered my harddrive was dead. The bios won't
even detect it :(
I tried to restore my backups onto another computer from a couple of
tar.gz files on a USB drive only to find errors when gunzipping them.
:(. I can get about 1/3 files off.)
However, I notice that somehow I made an image of the whole harddrive
(12 partitions) and it stored on my USB drive too as /kubuntu/dev/hda
I tried doing the
mount /media/disk/kubuntu/dev/hda -o loop /mnt/hda
(after making /mnt/hda first)
but it (not unsuprisingly) can't figure out the partitions.of find a
file system. There were all ext2 or ext3 from memory
Is there a way I can mount this image? Do I need the partition
tables? would ubuntu dapper have made a copy and put them anywhere? I
have /etc and /var from the disk too. This /dev/hda is about 25G so I
am wondering if I have a suitable image. And maybe I can recoved the
photos etc.
Thanks for any thoughts or suggestions.
Cheers
Chris
12 years, 7 months
Email training system
by Michael McDonald
Does anyone know of a email server, preferably free, that can be used
in a training environment? Current requirements are POP3 and SMTP
access. All email is to be confined to a single domain (the classroom
- not registered) and access to the (external) Internet should be
blocked.
It appears there could be a fair amount of work in setting up
"standard"software for this limited task, but I would prefer something
that most people would find simple to install to maintain.
Michael
12 years, 7 months
