Re: 2.6.23 spinlock hang in kswapd under heavy disk write loads

2007-10-11 Thread Nick Piggin
On Friday 12 October 2007 02:23, Mr. Berkley Shands wrote: > With DEBUG_SLAB on, I can run only a very short time under 2.6.23 > before a kernel panic. > > [ 626.028180] eth0: too many iterations (6) in nv_nic_irq. > [ 626.167583] eth0: too many iterations (6) in nv_nic_irq. > [ 626.206729] eth0

Re: 2.6.23 spinlock hang in kswapd under heavy disk write loads

2007-10-11 Thread Mr. Berkley Shands
With DEBUG_SLAB on, I can run only a very short time under 2.6.23 before a kernel panic. [ 626.028180] eth0: too many iterations (6) in nv_nic_irq. [ 626.167583] eth0: too many iterations (6) in nv_nic_irq. [ 626.206729] eth0: too many iterations (6) in nv_nic_irq. [ 626.400171] eth0: too man

Re: 2.6.23 spinlock hang in kswapd under heavy disk write loads

2007-10-10 Thread Nick Piggin
On Friday 12 October 2007 10:56, Berkley Shands wrote: > 100% reproducible on the two motherboards in question. > Does not happen on any other motherboard I have in my possession > (not tyan, not uniwide, not socket 940...) > > No errors, no dmesg, nothing with debug_spinlock set. > shows lots (wh

Re: 2.6.23 spinlock hang in kswapd under heavy disk write loads

2007-10-10 Thread Berkley Shands
100% reproducible on the two motherboards in question. Does not happen on any other motherboard I have in my possession (not tyan, not uniwide, not socket 940...) No errors, no dmesg, nothing with debug_spinlock set. shows lots (when it works), but by then too many things are locked up to be of

Re: 2.6.23 spinlock hang in kswapd under heavy disk write loads

2007-10-10 Thread Nick Piggin
On Thursday 11 October 2007 01:33, Berkley Shands wrote: > 2.6.23 with CONFIG_DEBUG_SPINLOCK on does not hang under very high write > loads to either an LSIELP (write rate 1.1GB/Sec) or to a highpoint > RR2340 (write rate 1.0GB/Sec). With CONFIG_DEBUG_SPINLOCK off however, the > system hangs wi