Hello!
While performing some zttest's for some time today, I was also keeping an
eye of a top of the machine. While the zttest was running, I also had a
ssh-keygen and a dd creating a 5GB file on an EXT3 partition running. I
noticed that for the most part, I got a decent number of 100%'s, and a
bunch of 99.6%'s or higher. However, it seems that whenever the zttest
dropped below 99%, it was usually (or at least often) because kjournald
was jumping up in the top list.
Has anyone done a comparison of zttest results with journalled and
non-journalled file systems? From my very limited testing today, it seems
like that might be an area to investigate. Does anyone have any
suggestions on how one might best test this? Or adjustments that might be
made to journalling settings that might improve this?
Tim Massey
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