Andreas Dilger wrote: > On Aug 29, 2008 07:36 -0500, Eric Sandeen wrote: >> at Ric & hch's request here is tar on the other fs's as well, re-sorted >> by level 0 dump time. I put acp into the mix as well. >> >> Oh, and this time I remembered to set the elevator to something sane >> (noop) for this storage, oops (was cfq last time) >> >> Also, this time the dup/tar/acp was written to /dev/null rather than >> another filesystem. Interesting how routing to /dev/null alone changed >> the ranking quite a bit. > > Note that tar has a (questionable) optimization when writing to /dev/null. > It will NOT open the file or read the data, and just do the filename > traversal to generate the file list and total file size. It does this by > comparing the output file to "/dev/null": Ah, crud. -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
