Messages in this thread | | | Date | Sun, 6 May 2007 00:29:39 +0200 | From | "Leon Woestenberg" <> | Subject | [ext3] journal commit interval |
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Hello all,
this is something I have long wondered about but have been afraid to ask.
When my system is chewing away on builds, the disk I/O write access pattern of my ext3 root filesystem (using CFQ, Intel SATA controller, hard disk) when visualized by GNOME System Monitor clearly shows a repetitive landscape of large peaks, 5 seconds apart, which not much activity inbetween.
I understand that's due to the ex3 journal commit interval (defaults to 5 seconds).
But why isn't the filesystem continuously committing only that part of the journal that is older than 5 seconds?
I would then expect the write requests to be smoothened over time, which can only be good in terms of performance and low latency.
Regards, -- Leon - 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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