Comments on: Tame Electrical and Heating Costs with CPU Power Management http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/ Mon, 15 Mar 2010 12:42:21 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Dave Convery http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1404 Dave Convery Thu, 31 Dec 2009 13:44:35 +0000 http://www.boche.net/blog/?p=1828#comment-1404 @Ted Steenvoorden - Unfortunately, I did NOT do a baseline against the default. I am just a little more comfortable having the hypervisor making the power decisions. @Ted Steenvoorden –
Unfortunately, I did NOT do a baseline against the default. I am just a little more comfortable having the hypervisor making the power decisions.

]]> By: Ted Steenvoorden http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1397 Ted Steenvoorden Thu, 24 Dec 2009 07:56:35 +0000 http://www.boche.net/blog/?p=1828#comment-1397 I just tried this with a cluster of BL460c G1 Blade Servers. These servers were configured with “HP Dynamic Power Savings Mode”. Letting ESXi control the power management doesn't change the energy consumption on the BL460c G1 blade. @Dave Convery: Did you see a change in the energy consumption on the BL490c blade? I just tried this with a cluster of BL460c G1 Blade Servers. These servers were configured with “HP Dynamic Power Savings Mode”. Letting ESXi control the power management doesn’t change the energy consumption on the BL460c G1 blade.

@Dave Convery: Did you see a change in the energy consumption on the BL490c blade?

]]> By: larstr http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1354 larstr Wed, 25 Nov 2009 10:06:29 +0000 http://www.boche.net/blog/?p=1828#comment-1354 I will visit this customer and consult them within a few weeks. Will upgrade to U1 etc, and do some performance tests. I will visit this customer and consult them within a few weeks. Will upgrade to U1 etc, and do some performance tests.

]]> By: daniel http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1351 daniel Tue, 24 Nov 2009 09:33:07 +0000 http://www.boche.net/blog/?p=1828#comment-1351 really nice feature indeed and a little less invasive (if it in fact doesn't reduce performance) on the cluster as a whole than DPM. but despite it being mentioned in the resource PDF, is it fully supported by vmware on HCL hardware? really nice feature indeed and a little less invasive (if it in fact doesn’t reduce performance) on the cluster as a whole than DPM. but despite it being mentioned in the resource PDF, is it fully supported by vmware on HCL hardware?

]]> By: kb.hurricane-ridge.com / Bookmarks for November 20, 2009 http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1348 kb.hurricane-ridge.com / Bookmarks for November 20, 2009 Mon, 23 Nov 2009 19:48:27 +0000 http://www.boche.net/blog/?p=1828#comment-1348 [...] Tame Electrical and Heating Costs with CPU Power Management » boche.net – VMware Virtual... – Notes on "using vSphere’s Advanced CPU Power Management feature." [...] [...] Tame Electrical and Heating Costs with CPU Power Management » boche.net – VMware Virtual… – Notes on "using vSphere’s Advanced CPU Power Management feature." [...]

]]> By: PiroNet http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1324 PiroNet Thu, 19 Nov 2009 09:26:47 +0000 http://www.boche.net/blog/?p=1828#comment-1324 @larstr What is the server brand and model and which power regulator mode is used at your customer site? Thx. @larstr What is the server brand and model and which power regulator mode is used at your customer site? Thx.

]]> By: Andrei http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1322 Andrei Wed, 18 Nov 2009 20:53:32 +0000 http://www.boche.net/blog/?p=1828#comment-1322 @larstr: Would your customer be interested in providing VMware with more details about their particular case? I'm curious what type of workloads were they running that would be so sensitive to our DVFS algorithm. Please feel free contact me by email at andrei at vmware dot com. @larstr: Would your customer be interested in providing VMware with more details about their particular case? I’m curious what type of workloads were they running that would be so sensitive to our DVFS algorithm. Please feel free contact me by email at andrei at vmware dot com.

]]> By: AFidel http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1321 AFidel Wed, 18 Nov 2009 20:17:15 +0000 http://www.boche.net/blog/?p=1828#comment-1321 Anyone have any numbers as to which is better, HP Dynamic Power Saving Mode or ESX controlled? Anyone have any numbers as to which is better, HP Dynamic Power Saving Mode or ESX controlled?

]]> By: larstr http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1320 larstr Wed, 18 Nov 2009 14:08:37 +0000 http://www.boche.net/blog/?p=1828#comment-1320 Have you measured the performance before and after enabling this? I have a customer who claims that their performance got really bad after enabling this. Have you measured the performance before and after enabling this? I have a customer who claims that their performance got really bad after enabling this.

]]> By: Virtualization Short Take #31 - blog.scottlowe.org - The weblog of an IT pro specializing in virtualization, storage, and servers http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1319 Virtualization Short Take #31 - blog.scottlowe.org - The weblog of an IT pro specializing in virtualization, storage, and servers Wed, 18 Nov 2009 13:01:10 +0000 http://www.boche.net/blog/?p=1828#comment-1319 [...] power savings/frequency scaling functionality. Simon’s post is dated October 27; Jason’s post is dated November 11. Coincidence? I don’t think so. C’mon, guys, go ahead and admit [...] [...] power savings/frequency scaling functionality. Simon’s post is dated October 27; Jason’s post is dated November 11. Coincidence? I don’t think so. C’mon, guys, go ahead and admit [...]

]]> By: PiroNet http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1314 PiroNet Mon, 16 Nov 2009 13:45:42 +0000 http://www.boche.net/blog/?p=1828#comment-1314 Great post Jason. Do you know that not all hypervizors are made equal when it comes to reduce power consumption. Servers running Windows Server 2008 R2 with Hyper-V may encounter a blue screen aka BSOD after enabling Hyper-V (KB974598). The installation of Hyper-V and the loading of C-states during initialization of Hyper-V causes a conflict, resulting in a blue screen. The system uses a C-state that is not supported by Hyper-V. More at http://deinoscloud.wordpress.com/2009/10/22/disable-c-state-why-that/ Cheers, Great post Jason. Do you know that not all hypervizors are made equal when it comes to reduce power consumption. Servers running Windows Server 2008 R2 with Hyper-V may encounter a blue screen aka BSOD after enabling Hyper-V (KB974598). The installation of Hyper-V and the loading of C-states during initialization of Hyper-V causes a conflict, resulting in a blue screen. The system uses a C-state that is not supported by Hyper-V.

More at http://deinoscloud.wordpress.com/2009/10/22/disable-c-state-why-that/

Cheers,

]]> By: Disable C-State, Why That? « DeinosCloud http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1313 Disable C-State, Why That? « DeinosCloud Mon, 16 Nov 2009 13:40:16 +0000 http://www.boche.net/blog/?p=1828#comment-1313 [...] [...] [...] [...]

]]> By: Dave Convery http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1308 Dave Convery Sun, 15 Nov 2009 16:47:39 +0000 http://www.boche.net/blog/?p=1828#comment-1308 Jason - No thank YOU for the post! I jumped on it as soon as I saw the Tweet. Like I said, I am going to use a few tidbits from here for my discussion on GreenIT at the PAVMUG meeting on Thursday. Dave Jason –
No thank YOU for the post! I jumped on it as soon as I saw the Tweet. Like I said, I am going to use a few tidbits from here for my discussion on GreenIT at the PAVMUG meeting on Thursday.
Dave

]]> By: jason http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1307 jason Sun, 15 Nov 2009 15:26:43 +0000 http://www.boche.net/blog/?p=1828#comment-1307 Dave, you are correct. Changing the CPU power policy via the iLO does indeed prompt for a reboot. I have updated the blog post, thanks to your feedback. Dave, you are correct. Changing the CPU power policy via the iLO does indeed prompt for a reboot. I have updated the blog post, thanks to your feedback.

]]> By: Michael http://www.boche.net/blog/index.php/2009/11/11/tame-electrical-and-heating-costs-with-cpu-power-management/comment-page-1/#comment-1305 Michael Fri, 13 Nov 2009 01:42:01 +0000 http://www.boche.net/blog/?p=1828#comment-1305 Nice Post! I must have one of those new fangled processors that Andrei mentions above. My whitebox ESX4i host only draws 100 watts at idle no matter if I select dynamic or static in the VI Client. I have an Intel Quad Core Q9300 processor installed. Nice Post! I must have one of those new fangled processors that Andrei mentions above. My whitebox ESX4i host only draws 100 watts at idle no matter if I select dynamic or static in the VI Client. I have an Intel Quad Core Q9300 processor installed.

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