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SubjectRe: [RFC] block layer support for DMA IOMMU bypass mode II
On Tue, Jul 29, 2003 at 09:51:18PM -0700, David S. Miller wrote:
> Make an ext2 filesystem with 16K blocks :-)

Executive summary:
looks the same as previous 4k block/16k page w/VMERGE enabled.

davem, I thought you were joking...I've submitted a oneliner to
Ted Tyso to increase EXT2_MAX_BLOCK_LOG_SIZE to 64k.
kudos to willy for quickly digging this up.
16k block size Works For Me (tm).

appended is the re-aim-7 results for 16k page/block on ext2.

grant


iota:/mnt# PATH=$PATH:/mnt/usr/local/bin
iota:/mnt# reaim -f /mnt/usr/local/share/reaim/workfile.new_dbase -s100 -e 500 -i 100
REAIM Workload
Times are in seconds - Child times from tms.cstime and tms.cutime

Num Parent Child Child Jobs per Jobs/min/ Std_dev Std_dev JTI
Forked Time SysTime UTime Minute Child Time Percent
100 108.62 12.46 203.84 5689.35 56.89 4.59 4.46 95
200 217.51 25.29 408.11 5682.60 28.41 9.06 4.36 95
300 325.57 38.05 612.20 5694.63 18.98 12.01 3.85 96
400 434.89 50.67 817.90 5684.16 14.21 15.60 3.75 96
500 545.89 65.74 1024.75 5660.51 11.32 29.45 5.72 94
Max Jobs per Minute 5694.63
iota:/mnt#
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