June 18, 2013

Post: Testing the Virident FlashMAX II

… of RAM. This is a dual-socket Xeon E5-2660 machine with 16 physical and 32 virtual cores. (I had originally planned…

Comment: Intel Woodcrest vs AMD Opteron for MySQL

… last table on the page and check results of “Dual Dual Core 875″ and “Dual Opteron 248″ from 5 Concurrencies onwards. The increase is… totally different results sets this time around when moving to dual dual core opteron setup?

Post: PBXT benchmarks

… Linux AS release 4 (Nahant Update 4) 2 Ñ… Quad Core Intel XEON cpu family : 15 model : 6 model name : Intel… of RAM Fedora Core release 5 (Bordeaux) 2 Ñ… Dual Core AMD Opteron cpu family : 15 model : 65 model name : Dual-Core AMD Opteron(tm…

Comment: The #1 mistake hosting providers make for MySQL servers

… both in dual and quad core machines. 64 bit OS/MySQL replicates correctly in my dual core machines, but fails in the quad core machines…

Comment: Intel Nehalem vs AMD Opteron shootout in sysbench workload

… prefer to have my MIPS on a small number of cores rather than on big ones since that’ll work well… there are other workloads where having a huge core count beats having fast cores, but most of the ones I run into… workloads the customer had (they were much better off on dual core intels).

Comment: Intel Nehalem vs AMD Opteron shootout in sysbench workload

… prefer to have my MIPS on a small number of cores rather than on big ones since that’ll work well… there are other workloads where having a huge core count beats having fast cores, but most of the ones I run into… workloads the customer had (they were much better off on dual core intels).

Post: Impact of the number of idle connections in MySQL

… Ubuntu 10.04, has 8GB of RAM and a Core i5 CPU (dual core with HT enabled). Since my goal is to test…, basically to match the number of available computing threads the Core i5 allows. I know by experience that this is about… also affected by concurrency issues. With new servers having 24+ cores, this phenomenon is seriously affecting performances.

Comment: Big Iron for tests anyone ?

…/servers/coolthreads/t5220/index.xml (non x86, up to 8 core, 64 thread) http://www.sun.com/servers/coolthreads/t2000/specs.xml (non x86, up to 8 core, 64 thread) http://www.sun.com/servers/x64/x4450/specs….sun.com/servers/x64/x4600/features.xml (up to 8 dual core AMD, upgradable to quad)

Comment: T2000 CPU Performance - Watch out

… essentially a next gen T2000. Twice as many threads-per-core leads to 64 logical processors being seen by the OS. Another big change is the addition of an FPU per core rather than a single FPU for the whole chip as…’ve been up against a Sun X4100 with 2 AMD dual-cores. Both machines have 16GB of RAM, but I’ve been…

Comment: Big Iron for tests anyone ?

Well, remote access is unfortunately out of question for me, but I do have a dual dual-core opteron box with 16GB of RAM that I can run benchmarks on. If you give me a benchmark set I will gladly run it.