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9

RSS too is enabled in the NIC settings, with 8 queues. Which unfortunately did not mean that RSS was being employed, as netsh int tcp show global showed: TCP Global Parameters ---------------------------------------------- Receive-Side Scaling State : disabled After running (btw without rebooting) netsh int tcp set global rss=enabled RSS ...


7

In theory yes, more drives in a raid0 would lead to higher performance because the load is shared over more drives. However in practice you would be limited by the the bandwidth of the raid controller, the CPU and memory performance and similar. The performance increase would not be linear, that is 4 disks is not exactly twice as fast as 2 disks. In any ...


2

Yes - Mark Russinovich wrote a whole series of posts, unfortunately back in 2008 so some of it might be out of date. Link-and-run answers aren't great, but he wrote a lot on the topic that I cannot easily summarize here. He also shows a bunch of tests that you could run to see if some of the limits in 2012R2 have changed. ...


1

While only a directed benchmark can really reply to your question, the safest bet is to run IRQs and application on the same CPU/socket, but on different cores. In this manner, available CPU power is maximized and, at the same time, the L3 cache common in all recent servers enables fast data sharing between IRQs and application. If you really are interested ...


1

Dual-ported SAS disks are not intended for performance, but rather resiliency when used in multipath SAS array configurations (e.g. external JBOD or SAN situations). For single server or internal storage purposes, there's no benefit or gain achieved by using both ports. If you need better storage performance, please scale with disk count, RAID controller ...


1

Having upgraded to a more recent version, I can confirm that the slow performance previously experienced is a thing of the past. The version packaged for Ubuntu 'Trusty' is over two years old (0.9.5 vs 1.2.0). Upgrading isn't too difficult except maybe for figuring out which dependencies are required (the newer version seems to have quite a few more than ...


1

It depends from the workload, but IMHO yes adding 2 additional disks to existing 2 disks array should give better overall performance. You need to realize where the bottlenecks are: CPU - how much data flow CPU can handle, bus/controller - how much data it can carry, SSD/HDD - how much data it can give/take. Let's assume that there is a Linux software ...


1

Its possible to bypass the kernel and use netdirect with hpc installed. see https://msdn.microsoft.com/en-us/library/cc904344(v=vs.85).aspx I cannot locate any perf data (I suspect it would vary per vendor since it uses NIC hardware more directly than the other APIs) but it should be on par with other kernel bypass solutions in Linux (kernel bypass is kernel ...


1

I would say that there is no universal answer for this. What’s a good server response time? It is the time your users are ready to wait without disturbing their daily job. As it seems you are talking about a public Website and not a private Web App, some studies have been published : 47% of people expect a web page to load in two seconds or less. ...



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