Messages in this thread | | | Date | Thu, 8 Jun 2006 10:28:02 +0200 | From | Voluspa <> | Subject | Re: [PATCH] readahead: initial method - expected read size - fix fastcall |
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On Thu, 8 Jun 2006 16:13:52 +0800 Fengguang Wu wrote: > It's interesting that copying of sparse file is more efficient with small > readahead size :) I get the same conclusion, though with smaller differences:
How on earth can you copy the file without overwriting the target /dev/null? As you saw, I could just "cat" the file. Size was:
root:sleipner:~# dd if=/dev/zero of=sparse bs=1M seek=5000 count=1 1+0 records in 1+0 records out root:sleipner:~# ls -l sparse 1040 -rw-r--r-- 1 root root 5243928576 Jun 8 10:26 sparse
5.2 fake GBs...
Mvh Mats Johannesson -- - 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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