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Anton Blanchard posted on the lkml he had a kernel compile on 7.52 sec using a 32 way logical partition, 1.1GHz POWER4, 60G RAM
I think Im addicted. I need help!
In this update we added 8 cpus and rewrote the ppc64 pagetable management
code to do lockless inserts and removals (there is still locking at
the pte level to avoid races).
hardware: 32 way logical partition, 1.1GHz POWER4, 60G RAM
kernel: 2.5.7-pre1 + ppc64 pagetable rework
kernel compiled: 2.4.18 x86 with Martin's config
compiler: gcc 2.95.3 x86 cross compiler
make[1]: Leaving directory `/home/anton/intel_kernel/linux/arch/i386/boot'
128.89user 40.23system 0:07.52elapsed 2246%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (437084major+572835minor)pagefaults 0swaps
7.52 seconds is not a bad result for something running under a hypervisor.
The profile looks much better now. We still spend a lot of time flushing tlb
entries but we can look into batching them.
Anton
32 way logical partition ?
"a 32 way logical partition, 1.1GHz POWER4, 60G RAM"
I would like to understand what is this machine.
Is it a uni-processor machine configured with something called a hypervisor (what is it by the way ?) to simulate 32 distinct processors ?
Or is it a 32-CPU machine with some special control (hypervisor) below the OS ?
Thanks.
Re : 32 way logical partition ?
It look like the last IBM Risc/6000 Box. I guess it is the p690 also called as Regatta from IBM.
logical partition is near to Mainframe LPAR; Some partition features look like Sun E10K & E15K.
CPU is the last 64bits processor from IBM. I can remamber each CPU has about 16MB L2 Cache.
Starting with PowerIII and PowerIV, IBM build powerfull Unix Boxes...
Can you send your dmesg ?
Can you send your dmesg ?