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> I also observed that other application I use occasionally - LXR (Linux > source cross referencing tool) - takes much longer to generate xref > database (which is in Berkeley DB files). It works in three passes, > where the last one, when it dumps symbols into DB, is interesting. In > 2.4 it finishes quickly (it uses 100% CPU, then occasionally syncs the > databases - heavy write traffic for a second - then continues), but > 2.5 has problems with it (it stucks writing to disk all the time, CPU > usage is minimal and process progresses very slowly). Andrew, if > you're interested I can send you some numbers to describe the case > better. Hmmm, are you using ext3? Changes to the meaning of yield sometimes make fsync go very slowly. This problem has been around since 2.5.28, and hasn't yet been fixed (As for a fix, Andrew Morton said "I'll sit tight for the while, see where shed_yield() behaviour ends up"). All the best, Duncan. - 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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