1
vote
1answer
868 views

Slow Write Speed on ESXi host

I have an ESXi 5.0 free host with an internal datastore of 7.2K 5 disk RAID 5 using a PERC 710 mini RAID controller in a Dell Poweredge R620 Server with 32GB Ram and a 12 Core Xeon. I seem to get ...
5
votes
2answers
334 views

vCenter Cluster CPU utilisation data inaccurate

We have quite a reasonably sized vSphere 'estate', with 80% of our Windows/Linux servers virtualised, running across six Datacentres. One of my challenges is medium to long term capacity planning, ...
1
vote
1answer
633 views

Under what circumstances could adding a CPU to an “underutilized” VMware vSphere 4.1 VM increase performance?

Scene: 16-core VMware ESX 4.1 host. Presume that the host is not over loaded in any single resource at all. Storage latencies are very low, total memory utilization is below the physical ram amount, ...
2
votes
4answers
375 views

Should I expect a great increase in Oracle performance in terms of handling multiple requests switching from single to dual core?

We have an Oracle database of roughly 100 GB that runs on top of a Windows Server 2k3R2 VM in ESX in a 1 socket, 1 core configuration. Whenever it has to handle a major query it seems to get "pegged" ...
2
votes
3answers
726 views

Is it ok to team NIC's from different vendors together in VMware ESX?

I want to achieve the best performance with my two servers (SAN and ESX). I have good RAID (LSI, SASes), that is showing 1GB/s result, so the bottleneck now is network part since I have only two NICs ...
5
votes
2answers
805 views

Apache's htcacheclean doesn't scale: How to tame a huge Apache disk_cache?

We have an Apache setup with a huge disk_cache (>500.000 entries, >50 GB disk space used). The cache grows by 16 GB every day. My problem is that the cache seems to be growing nearly as fast as it's ...
1
vote
2answers
968 views

Is there a disadvantage to running nginx on a VM?

I plan on using nginx to host much of my static content with some minimal php. I'm going to have 2 servers for nginx, but that may be too much hardware for what I need. I'm thinking about dividing ...
2
votes
2answers
1k views

Degraded disk IO performance on ESX 4.1 over time

I am running VMWare ESX 4.1.0, 260247 on an intel DX58SO motherboard with a HighPoint 4310 raid controller. The server has 2 velociraptor drives in RAID 1 and 2x WD black 2TB drives in RAID 1 as ...
7
votes
2answers
981 views

Is there a standard way to benchmark a Windows VM performance from within the guest OS?

We are seeing our software behaving unusually at one of customers where it is being run inside a Windows 2008 virtual machine. The host is VMWare ESX Server. The biggest issue I have seen is our ...
3
votes
5answers
2k views

Performance of ClearCase servers on VMs?

Where I work, we are in need of upgrading our ClearCase servers and it's been proposed that we move them into a new (yet-to-be-deployed) VMmare system. In the past I've not noticed a significant ...
0
votes
3answers
541 views

Performance problem on a VMWare ESX virtual hard drive

I have performance problems on a virtual hard drive on a VMWare ESX 4.0 virtual machine. See the weird following sequential read speed graph: I passed the test several times, and the shape is ...
3
votes
8answers
7k views

How many datastores should I create for best performance for ESX 4?

I have 6 x 500GB SATA drives that I want to create a RAID 10 off of, this gives me roughly 1.3TB. Would it benefit me to create two datastores (split the 1.3TB in half) or just create one large one? I ...
1
vote
3answers
1k views

Poor IO performance on SQL Servers in VMs

I have a small VM ESX 3.0 implementation - mostly test web servers, however there is 1 db server that gets terrible io performance. Will adding additional virtualized disks in a RAID help ...
1
vote
2answers
996 views

Expected IOPS for log writing on PS6000X SAN?

Customer is experiencing poor Sybase ASE 15 performance on a PS6000X SAN with 16 X 450GB 10K in RAID-50. The server is a Dell R710 running 2003 server R2 64bit in ESX 4.0.0,256968 I've used sqlio to ...
0
votes
4answers
471 views

ESX 4.0 space: DASD, NAS, or?

I put together an ESX box for better management, but its performance is a WTF item; I'm a noob at dealing with ESX, so I'm looking for a laundry-list of reading material to help me straighten this out ...
1
vote
1answer
1k views

Virtualization speed king: intel xeon westmere 5620 vs AMD Magnycour 6134

two similarly sized 2P systems from HP: 48GB ram, 8x (300gb 15k SAS) ESX 4.0 is s/w but choice of AMD 6134 gives 16 cores vs Intel 5620's 8 cores. Both almost at same CPU Clock 2.4 GHz for VM ...
0
votes
1answer
328 views

vmware ESX memory usage pattern

We have several ESX 3.5 clusters but are experiencing performance issues with one cluster in particular. Why does the cluster memory dip by 50% every hour at 10 minutes and 25 minutes past the ...
1
vote
4answers
4k views

Bad disk performance on HP DL360 with Smart Array P400i RAID controller

I have a HP DL360 server with 4x 146GB SAS disks and a Smart Array P400i RAID controller with 256MB cache. The disks are in RAID 5 (3 disks + 1 hot spare). The server is running VMware ESX 3i. The ...
1
vote
1answer
1k views

ESX3.5 Performance CPU wait counter

After looking at various vms on several ESX hosts I notice that the CPU wait counter is always hovering around the 95-100% mark. Is this normal? I can't seem to find many good resources regarding this ...
0
votes
2answers
1k views

Relativy slow transfer speed in vSphere

My configuration is: IBM X3850M2 with 4 Six Core CPU, 128 Gb RAM, 3x dual port network Intel Corporation 82571EB Gigabit Ethernet Controller For testing I created only 2 VM (Server 2008) which are ...
1
vote
2answers
836 views

Certain VMware guests run slowly unless I feed them extra I/O interrupts

Running ESX server 3 on four identical 4-CPU hosts, guests on Fibre SAN VMFS. Guest OS is Fedora 10. Cloned it to create web, jboss, mysql, and memcached templates. Cloned each template into four ...
2
votes
3answers
922 views

Put caching web server in vmware?

We are having to make a design choice in our web environment. At this moment we are stuck at a discussion if we CAN put the varnish caching server into the vmware environment or on dedicated hardware. ...
2
votes
4answers
726 views

Speedup vmware esx guest hdd access

we run several windows servers and windows clients on our vmware esx. One of the Windows 2003 Servers is a build-server with major HDD-reads/writes. as it is our build server. This machine was a ...
1
vote
2answers
756 views

Virtual Machine Dedicated Harddrive in ESX

Is it possible to give a virtual machine a dedicated hard drive in ESX. I want to do this to improve performance but my co worker says it's not possible.