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Jan Kasprzak <kas@informatics.muni.cz> wrote: > > Nathan Scott wrote: > : On Wed, Jan 07, 2004 at 02:30:42AM -0800, Andrew Morton wrote: > : > > : > Nathan, did anything change in XFS which might explain this? > : > : Just been back through the revision history, and thats a definate > : "no" - very little changed in 2.6 XFS while the big 2.6 freeze was > : on, and since then too (he says, busily preparing a merge tree). > : > : > I see XFS has some private readahead code. Anything change there? > : > : No, and that readahead code is used for metadata only - for file data > : we're making use of the generic IO path code. > : > I have done further testing: > > - this is reliable: repeated boot back to 2.6.1-rc2 makes the problem > appear again (high load, system slow has hell), booting back > to -test7 makes it disappear. Is the CPU load higher than normal? Excluding I/O wait? If so, can you profile the kernel while the load is running? - boot with `profile=1' on the kernel command line - establish steady state load - Run readprofile -r - sleep 120 - readprofile -n -v -m System.map | sort -n +2 | tail -40 (More info in Documentation/basic_profiling.txt) Thanks. x - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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