performance

Hi all I got a Dell T40 less than a year ago as I had to migrate from a HP Microserver. (old one got flooded, long story). I've had a raid card LSI megaraid 9261 in it, which was fairly easily replaced from ebay. But I am running Esxi 6, which I'd like to upgrade to 7 at some stage, but it...

I ran `iperf3` between two Windows machines and noticed that the speeds were not symmetric. I tested using both the built-in 1-gigabit Ethernet adapters in each machine as well as with 10-gigabit Mellanox ConnectX-2 cards in both machines. Here's the relevant output. I address the 10-gigabit...

Welcome to the $1,000,000 question topic :D My OpenVPN install residing on an ESXi 7 host (E5-2695v2, 4C allocated, 8GB RAM) is able to push barely 200Mbps through OpenVPN with Hardware-based VT and IOMMU enabled for the VM. Algorithm is currently AES-128-GCM. Two VMXNET3 NICs are configured...

I have a little issue while testing InfiniBand connections. While system (Bios-wise) is set to performance and the CPU governance is set to performance, I still receive the message/alert/warning of CPU frequency mismatches. Both CPU's are E5-2673v3's. The cards are old 10EUR eBay findings of SUN...

Hello, I am seeking advice or consensus if we should try to engineer our Nutanix cluster with RDMA. It stands now the nodes are fairly beefy: Each node is 2x 6226R and 1.5TB ram each,12x3.84TB SAS12 SSDs (no NVME drives). The load is a mixed server load, various biz apps, SQL databases, some...

Setting up a new home lab - currently I have a single PowerEdge R630 which boots ESXi from thumbdrive. PowerEdge is connected to Synology 1819+ with 10GBE - iSCSI provided datastore. I have installed Windows Server 2016 VM (2vCPU, 4GB RAM) and have used the PVCSI disk driver and installed VM...

Seems the SMR drives have inflated cache to compensate for lower performance. The SMR drives however have really appealing densities and form factors (4tb in a 2.5” package, that’d be 96tb in a 2U 24 bay Supermicro chassis). So, first question: are they really so bad? I’m guessing the response...

Upgrading parts of my homelab and doing some storage tests using sysbench: sysbench --test=fileio --file-total-size=64G prepare sysbench --test=fileio --file-total-size=64G --file-test-mode=rndrw --max-time=300 --max-requests=0 run sysbench --test=fileio --file-total-size=64G cleanup I'm...

Hello, We have a seperate Ceph cluster and Proxmox Cluster (seperate server nodes), i want to know if the performance we get is normal or not, my thought was that the performance could be way better with the hardware we are using. So is there any way we can improve with configuration changes...

Hello STH forum, I have a question about running Windows on Proxmox because this is giving me a bad time so far. I'm asking here at STH first because it seems to me there is more technical knowledge on STH than on the Proxmox forums. Some relevant specs of the box I'm running this on: Intel...

System: Desktop (headnode): I7-5960X, GA-X99-SLI motherboard Server (slave nodes): 6027TR-HTR (four X9DRT-HF). Only using one node for this testing. 2x E5-2667 V2 OS: CentOS 7.5 with Infiniband Support and various other packages. No custom OFED installs. HCAs: One Sun/Oracle X4242A QDR...

Sequential read speeds on my ZFS pool (4 vdevs, each a 2 x 6TB mirror) are not where I'd like them to be, at 80 - 130MB/S when moving large files around. My two main use cases for the pool are hosting VMs and moving large video files around. The VMs are performing fine but I'd like faster video...

I'm a big fan of AMD's new processors. My Threadripper workstation is great, and I've been toying around with the idea of building an Epyc server that would run storage (appr. 15 TB needed) and my VMs here (mail server, web server, Plex, a bit of minecraft for the nippers... ;)) Liking the...

Hi everyone, I am building a ~100TB box with a Quanta D51BV-2U. This is a 12-slot chassis and for a client in the CG/Animation space. The drive I plan to use will be HGST Ultrastar He12 (P/N: HUH721212ALE600 or LE604). I have not seen anyone using this drive with FreeNAS and I seek those who...

Hello, At home I run different test / live web application on Ubuntu web servers installed as virtual machines. Last time I had a network failure therefore the Nagios system could not send any notification out. Now I am looking for an additional monitoring service which is outside from my...

Hi all.. I have 8 ssd's (Toshiba Trion OCZ 150 480gb) hooked up to an 9205-8e with 2 SFF 8088 to 4 X SATA cables. It's sitting in an HP Z800 (96gm ram) running proxmox (latest v4.xx). The lsi is placed in an 8x pcie 2.0 port I have made two raid0 arrays (four ssd's in each) with mdadm and i...

I'm going crazy over here troubleshooting a performance issue that I can't seem to iron out. Wondering if I am overlooking something simple. Configurations: Hard Drive: 24x SAS Seagate 12gbps connected, 7.2k 10TB Hard Drives – Model: ST10000NM0096 (revision: E001) HBA: Dell Perc H830 –...

Do any of you have experience with encrypted drives, and performance measurement of same? Specifically, 6TB level spinning disks, I think at 7200RPM levels, for use in mid-sized storage systems. I think the target is a 3 shelf FAS-8020 system. Any drawbacks aside from performance issues? --...

Help us build a performance database on Intel Xeon ES/QS CPUs ( Single, Dual, Quad processor systems all accepted ). All you have to do is run the following benchmarks, and post your scores/results along with your CPU & system info. The benchmarks ( click on their name to download! ) to be...

I've been playing around with ESXi for almost a month now. My first hurdle was getting my GPU to successfully passthrough and while a bit bumpy, I managed to get that fully working which was exciting. Then, when working through setting up my VMs I started to notice that I had pretty mediocre...