search for: 153843

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2008 Feb 15
38
Performance with Sun StorageTek 2540
Under Solaris 10 on a 4 core Sun Ultra 40 with 20GB RAM, I am setting up a Sun StorageTek 2540 with 12 300GB 15K RPM SAS drives and connected via load-shared 4Gbit FC links. This week I have tried many different configurations, using firmware managed RAID, ZFS managed RAID, and with the controller cache enabled or disabled. My objective is to obtain the best single-file write performance.
2014 Jan 28
3
[LLVMdev] MergeFunctions: reduce complexity to O(log(N))
Hi Stepan, Sorry for the delay. It's great that you are working on MergeFunctions as well and I agree, we should definitely try to combine our efforts to improve MergeFunctions. Just to give you some context, the pass (with the similar function merging patch) is already being used in a production setting. From my point of view, it would be better if we focus on improving its capability
2014 Jan 30
3
[LLVMdev] MergeFunctions: reduce complexity to O(log(N))
...0 0.01 8335 sqlite3.ll 1054 7247672 4 0.71 7245842 * * * sse.expandfft.ll 9 75273 0 0.02 75253 0 0.01 75253 sse.isamax.ll 13 32431 0 0.00 32411 0 0.00 32411 sse.shift.ll 6 7035 0 0.01 7015 0 0.01 7015 sse.stepfft.ll 11 53308 0 0.01 53288 0 0.02 53288 stack.ll 0 552 0 0.01 535 0 0.01 535 stats.ll 7 153843 0 0.02 153814 0 0.02 154514 stcopy.ll 3 7686 0 0.01 7652 0 0.01 7652 StdInStream.ll 9 29832 0 0.01 29805 0 0.01 29805 StdOutStream.ll 12 18089 0 0.01 18062 0 0.01 18062 stepanov_abstraction.ll 188 481183 24 0.05 489762 0 0.05 448404 stepanov_container.ll 330 668695 30 0.06 672872 * * * stepanov_v1p...