Re: Prioritizing readdirplus/getattr/lookup

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Andrew Klaassen wrote:

  I've confirmed my earlier results using 2.6.37.5 on the server, though now
  the results are closer to 10 times worse than the Netapp on similar
  hardware rather than 100 times worse.
  
  A big improvement, but I'd still be interested to know if the server is
  capable of the getattr/readdirplus/lookup versus read/write tradeoffs that
  I'm looking for to bring "ls -l" speeds under load down to levels that
  won't make my users yell at me.

What would be nice is if we could add a new system call that would do
roughly what the nfs4 readdir rpc does.  It would take a mask of requested
file attributes, then return those attributes along with the directory
entries.  This would help "ls -l" but would also help all those chatty new
gnome/kde user interface things that love to stat every file in every
directory.
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