>>>>> "Mike" == Mike Fedyk <[email protected]> writes:
Mike> On Sat, Feb 13, 2010 at 7:11 PM, James Cloos <[email protected]> wrote: >> Sometime between rc6 and rc7 all filesystem I/O started using 100% CPU, >> usually on the order of 60% sys, 40% user. >> >> I've tried this with each of ext4, jfs and btrfs filesystems. All show >> the same issue. >> Mike> Are you sure you're not running with any of the debugging options Mike> enabled? I see the same, but I have debugging enabled (rawhide Mike> kernel). There are some: CONFIG_HAVE_DMA_API_DEBUG=y CONFIG_X86_DEBUGCTLMSR=y CONFIG_CFG80211_DEBUGFS=y CONFIG_MAC80211_DEBUGFS=y CONFIG_PNP_DEBUG_MESSAGES=y CONFIG_FIREWIRE_OHCI_DEBUG=y CONFIG_USB_SERIAL_DEBUG=m CONFIG_DEBUG_FS=y CONFIG_DEBUG_KERNEL=y CONFIG_SCHED_DEBUG=y CONFIG_DEBUG_BUGVERBOSE=y CONFIG_DEBUG_MEMORY_INIT=y CONFIG_DEBUG_STACKOVERFLOW=y CONFIG_KEYS_DEBUG_PROC_KEYS=y I forgot about /proc/sched_debug, but am back at -rc6 right now; I'll post an example of /proc/sched_debug output during the issue when I'm next in rc8 or later. -JimC -- James Cloos <[email protected]> OpenPGP: 1024D/ED7DAEA6 ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Jfs-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jfs-discussion
