| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
Re: [Xen-devel] memory fault
" > DOM2: __alloc_pages: 0-order allocation failed (gfp=0x20/0)
" It's pretty unlikely this is anything to do with Xen -- I bet you
" could reproduce this on a stock Linux compiled without CONFIG_HIGHMEM
You are correct. This message pops up on stock linux as well if
memory is constrained as tight as in our Xen config.
" > DOM3: Unable to handle kernel paging request at virtual address c3f77820
The EIP is in arch/xeno/drivers/network/network.c:_network_interrupt()
I no longer have the oops messages unfortunately. We had to get
the hosts going again for that project and the oops got lost.
" > DOM1: Weird failure in hard_start_xmit
Xen prints this message here:
xeno-1.2.bk/xen/net/dev.c:816: printk("Weird failure in hard_start_xmit!\n");
Last night a user sent me a detailed report on NIC trouble:
" When the machines freeze up running bbsend, bbrecv, or netgen, they _also_
" freeze up on incoming SSH connections.
" If I'm already logged into rack217 via SSH when I start a netgen, then my
" interactive session gets laggy or freezes completely.
"
" At any time, killing the netgen process makes whatever was frozen resume
" almost immediately.
"
" We're not talking about large amounts of traffic here: 12KB/s causes all
" of the above symptops. netgen and bbsend both do some busy-waiting, but
" not that much of it.
"
" For some reason, the system load goes sky-high, even with just one netgen
" process. netgen is single-threaded and spends less than half of its time
" busy-waiting, yet system load often ends up above 3.
"
" End of symtoms, beginning of theory: all the bad systems are P4s running
" Xeno and using Broadcom ethernet cards. (At least, they used to be
" Broadcoms. With Xeno running, I can no longer check.) The working
" systems are a mix of P4 and P3, Xeno is running on two of them (but only
" on P3s), and they're all eepro100 cards.
"
" My guess is that Xeno is interacting badly with either the bcm5700 or the
" P4. I'm leaning toward the former. Is there any way to boot the machines
That "hard_start_xmit" message showed up on the hosts with
Broadcom BCM5703 NICs.
We'll setup a test cluster to isolate what is going on with these
network apps.
-------------------------------------------------------
This SF.Net email is sponsored by: IBM Linux Tutorials
Free Linux tutorial presented by Daniel Robbins, President and CEO of
GenToo technologies. Learn everything from fundamentals to system
administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel
|
|
|
| |
|
Home