2.6.23 with CONFIG_DEBUG_SPINLOCK on does not hang under very high write loads to either an LSI8888ELP (write rate 1.1GB/Sec) or to a highpoint RR2340 (write rate 1.0GB/Sec). With CONFIG_DEBUG_SPINLOCK off however, the system hangs with kswapd getting 100% of the cpu and most if not all other processes are locked out. Sometimes even the keyboard is locked out.
This is seen on a supermicro H8DM3-2 and H8DMi-2 motherboards, 16 GB RAM, 2222 SE or 2216 processors. Not seen on a Uniwide 3546ES, or on a Supermicro H8DM8 with 8222 CPUS. kswapd sits at (according to KDB) __spinlock_irqsave + 0x15 prepare_to_wait + 0x15 kswapd + 0xe3 kthread + 0x47 berkley - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
