Messages in this thread | | | Date | Mon, 10 Jan 2005 03:23:30 +0200 | From | Sami Farin <> | Subject | vfat unlink latency 54.6ms for 128MB files |
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Just wondering, when I remove a 128MB file on vfat partition (usb-storage, memcard reader), it causes 54.6ms latency in rtc_latencytest... latency seems to increase linearly as the filesize grows. I calculated 1s would be reached with 2344MB file but I didn't bother trying that yet. Are there any possible fixes for fat fs so that it doesn't disable interrupts for that long a time?
When I use loop device (the file on reiserfs), I get 45.9ms latency, so this is not usb's fault.
These with Linux-2.6.10-ac8 on UP, PPro+, no preempt. http://safari.iki.fi/vfat-unlink/
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