Posts tagged Postfix
Virtualization and the ISP (part 3.1)
Oct 9th
Time for some power measurements!
ESXi was the hypervisor involved in the tests.
System installed, 4 virtuals powered on, but not doing anything: 2.2A @115V
System installed, 4 virtuals being installed hitting the I/O system: 2.4A @115V
System installed, 4 virtuals pushing 100% CPU each, no tuning: 2.6A @115V
While the virtuals were pushing the high CPU load, they were also hitting the disk I/O system as well, though not nearly as hard as 4 concurrent installs occuring.
Part 3.2 will continue with real life power measurements of the systems these PE2900s would replace so that I can do a comparison based on idle vs full load against current production systems (mix of idle and load).
Part 3.3 will have information as I cut over a couple of the clustered systems onto the PE2900 virtualized servers starting with one of the web servers and a POP/IMAP server, continuing from there to a couple of the SMTP servers. I’ll be able to report back subjective performance reactions as well as some actual measured data via different utilities.
While this is happening, I am working on learning how to make my own ‘appliances’ for faster configuration and turn-up of the different servers I’d like to deploy. It has been kind of boring so far, but maybe I’ll get’er all figured out.
Until next time…
Virtualization and the ISP (part 3)
Oct 7th
Oh noes, part 3 is upon me and now I must be witty or informative. I am tired today, so I’ll try for informative.
My PE2900 showed up today and has been put into the rack. I even have a silly picture of its guts…
PE2900 guts
Wasn’t that nice? Say ‘yes’ please, it helps my ego a lot.
Now onto the virtualization ghetto tour!
Virtualization and the ISP (part 2)
Oct 4th
Ah, the dreaded part 2 of the series.
I ordered my test system from Dell on Tuesday, September 30th, 2008, and the box shipped on Thursday, October 2nd, 2008. I am excitedly waiting for it.
The box I ordered is to test out the I/O performance for the mail server virtualization, the config is:
- Quad Core Xeon E5420, 2.5Ghz, 2x6MB L2 Cache, 1333Mhz FSB
- 16GB (8x2GB FBDIMM)
- Quantity 4 146GB, 15K RPM SAS disks
- PERC6/i RAID controller
- Dual Port Intel 1000PT
So, not a huge machine, though not small either. If this works out well, then I’ll order up 8 of them to start the compression of my physical servers into virtual servers.
Postfix and antispam
Jul 15th
I had originally written this for my personal blog and reposting here with some updates.
Wow, there are a lot of bad documentation links out there on the interTRON.
For the $ayjob, I have been battling spam for quite some time and continue to look for new ways to put a stop to this abuse. The hard part? One persons spam is another persons legit email, it is so completely difficult to do something that makes everyone happy.
