Re: [Xen-ia64-devel] [PATCH] speedup ptc.e emulation

[Kouya Shimura <kouya@xxxxxxxxxxxxxx>]

Previously it took 13msecs to emulate a ptc.e instruction.
This patch saves 4msecs though it's still slow.

Windows uses ptc.e so often. we got 8% gain in TTCP
(network benchmark) on Windows guest with this change.

Thanks,
Kouya

Alex Williamson writes:
 > On Fri, 2007-07-13 at 19:01 +0900, Kouya Shimura wrote:
 > > Hi,
 > > 
 > > This patch makes ptc.e emulation faster.
 > > It defers the initialization of collision chain area of VHPT.
 > > Also removes an unused field from struct thash_cb.
 > 
 >    Applied.  Does this change have a noticeable effect on any specific
 > tests?  Thanks,
 > 
 >      Alex
 >  
 > -- 
 > Alex Williamson                             HP Open Source & Linux Org.

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