On 03/02/2016 03:00 PM, Mike Cammilleri wrote: > So LTSP memory/processing requirements can vary widely depending on your > environment and what your users are doing with it. I get that. But I was > wondering if someone really had a finer sense on what the requirements > are for the following situation.
Sorry, but I don't have an answer for something of your scale. I run at most 30 concurrent users, many are kiosks and only get used intermittently. However, my modest 4 core CPU and 8 GB RAM server handles that easily. That said it doesn't take many runaway processes (Adobe and Mozilla I am looking at you) to suck up those 4 cores. Also of concern is the NIC. One full screen video stream can easily eat up 500+ Mbps so only two users watching videos means a saturated 1 Gbps NIC. Consider putting clients on throttled ports (ex: 10/100 Mbps ports) or going with 10 Gbps NICs or maybe just blocking access to obvious resource intensive sites. Audio is less bad but still significant as each stereo 48 kHz stream is a couple of Mbps. So under "normal" load you might get 100 users on a modest server, but you need to be very diligent about monitoring for resource hogs. > I think it comes down to which is a better scheduler? VMware or Ubuntu? > If VMware better utilizes the host resources for the LTSP Server VM and > the strain the clients put on it, then sure, maybe we'll dedicate one of > our VMware hosts just to this task. But if Ubuntu is a better resource > scheduler than VMware then might as well just stick with installing > Ubuntu directly on the machine and skip any virtualization. That one is easy: a hypervisor will never give you better performance than the bare metal server. Period. VMs are for flexibility not performance. If you don't need to easily move your LTSP server to different hardware, or share the host resources among multiple guests then you don't need a VM infrastructure. That said I am currently working on moving my LTSP server to a KVM guest primarily for reasons of resiliency. If I run into any issues I will simply put it back on bare metal. Jeff ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
