On Wednesday, May 5, 2010 at 01:53:55 -0400, Srivatsa Vaddagiri wrote: > On Wed, May 05, 2010 at 12:31:11PM -0700, Alec Istomin wrote: >> >> On Wednesday, May 5, 2010 at 13:27:39 -0400, Srivatsa Vaddagiri wrote: >> >> My preliminary results show that single vCPU Linux VMs perform up to 10 >> >> times better than 4vCPU Linux VMs (consolidated performance of 8 VMs on >> >> 8 core pre-Nehalem server). I suspect that I'm missing something major >> >> and look for any means that can help improve SMP VMs performance. >> >> > Could you provide more details of what workload was used to compare this >> > performance? >> >> It's Dell's DVD-Store LAMP stack test suite with Medium database (about >> 1 GB MySQL data) . 8x 2Gb VMs (on 16GB RAM host) with different vCPU >> configuration simultaneously loaded by external web clients. > Ok ..Do you have any more data on how the vCPU scalability looks like (how > the throughput scales with increasing vCPUs)? See attached for 1 vs 2 vs 4 vCPUs consolidated throughput from multiple VMs with the same client payload. Selected DVD-Store (LAMP) scalability is mixed into here too and I wonder what type of test would you recommend to receive cleaner results? Regards, Alec
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