Originally posted by HokTar
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Linux 2.6.38 Kernel Multi-Core Scaling
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Originally posted by jakubo View Postcomments on the graphs are rare these days on phoronix.com
nothing to tell why the big kernel lock patch and the "patch that does wonders" - as proclaimed - hardly make a change?
Different benchmarks will have different sensitivity.
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comments on the graphs are rare these days on phoronix.com
nothing to tell why the big kernel lock patch and the "patch that does wonders" - as proclaimed - hardly make a change?
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Originally posted by mtippett View PostThe 48 core systems will be 4x12 cores. That's a slightly different (and expensive scenario).
But I do get your point and unfortunately I can't donate a system like that so the situation is unlikely to change. Maybe you could ask Tyan or Supermicro for the reasons I mentioned.
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The 48 core systems will be 4x12 cores. That's a slightly different (and expensive scenario).
This system represents a single package high core count - which is arguably going to be the typical mid-high end system that people will be getting for the next year or so.
What is interesting is that Ubuntu did get a reasonable gain from 6 real cores to 12 cores (6 being HT). The PC-BSD and OpenIndiana systems would typically collapse when HT was turned on. You get the benefit of about 1-2 _real_ cores with the 6 HT "cores" being enabled.
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Shouldn't this be tested on something with a really big number of cores/processors to be able to see any differences? Something like 48 cores or more? 6 cores isn't all that much, even if they have HT.
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Linux 2.6.38 Kernel Multi-Core Scaling
Phoronix: Linux 2.6.38 Kernel Multi-Core Scaling
Last month there were benchmarks on Phoronix looking at the multi-core scaling performance of multiple operating systems, including CentOS 5.5, Fedora 14, FreeBSD 8.1, and OpenIndiana b148. CentOS 5.5 uses the long-term Linux 2.6.18 kernel while Fedora 14 has the more recent Linux 2.6.35 kernel by default, but a number of users asked how the Linux 2.6.38 kernel would fair for multi-core scaling with the removal of the Big Kernel Lock and various other low-level improvements in this forthcoming kernel. Here are some benchmarks showing just that.
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