By: rwessel (robertwessel.delete@this.yahoo.com), January 27, 2017 10:36 pm
Room: Moderated Discussions
David Kanter (dkanter.delete@this.realworldtech.com) on January 27, 2017 6:46 am wrote:
> POWER8 has >1K L2 TLBs. The z196 (which is old, the z12 and z13 are newer) has
> 1.5K L2 TLB entries, see http://www.realworldtech.com/z196-mainframe/6/
For whatever reason I can't find a reference for the z13's TLB at the moment, but the L1 TLB is 512 entries, and I *think* the L2 is 4K. The z13 also is supposed to have a separate TLB for large pages (on the z12 large pages were translated in the same L1 TLB as the 4K pages). I don't recall ever seeing any description of the organization of the large-page TLB.
> POWER8 has >1K L2 TLBs. The z196 (which is old, the z12 and z13 are newer) has
> 1.5K L2 TLB entries, see http://www.realworldtech.com/z196-mainframe/6/
For whatever reason I can't find a reference for the z13's TLB at the moment, but the L1 TLB is 512 entries, and I *think* the L2 is 4K. The z13 also is supposed to have a separate TLB for large pages (on the z12 large pages were translated in the same L1 TLB as the 4K pages). I don't recall ever seeing any description of the organization of the large-page TLB.