686 reputation
718
bio website cej.nightwolf.org.uk
location United Kingdom
age 39
visits member for 5 years, 5 months
seen yesterday

Developer and general jack of all trades, professionally working with the Microsoft stack (mostly specializing in Microsoft SQL, with some C# on the side), but from a UNIX background (and as a result, perl is still one of my heavily used weapons in my armoury).


Dec
2
awarded  Caucus
Dec
2
awarded  Constituent
Oct
14
revised How do I generate a list of windows patches and the date they were installed on a windows 2000 server?
Added how to query from powershell
Oct
1
awarded  Popular Question
Aug
22
comment ESXi and Windows Server CPU parking
Good suggestion - ta.
Aug
22
accepted ESXi and Windows Server CPU parking
Aug
21
comment ESXi and Windows Server CPU parking
This appears to have done the trick on our test bed: load is now being spread across all the vCPUs (according to Windows), and rather than 2 concurrent threads we've got 4 concurrent threads. We'll be running on the big rig (hopefully) today so will confirm then.
Aug
20
comment ESXi and Windows Server CPU parking
I'm not trying to outsmart VMWare, I'm trying to second-guess Windows (as it doesn't appear to be scheduling an app across all vCPUs) :-) I didn't think we'd need to do owt, mostly due to the lack of information about it online (implying most/everyone leaves it as is), but just wanted to explore this aspect.
Aug
20
comment ESXi and Windows Server CPU parking
It's something we've seen on a rig under a fairly heavy CPU load - a multi-threaded app isn't appearing to be utilising all the vCPUs, with resource manager marking a couple as "parked" (despite there being more than enough threads queued to run). It's the first time we've had to ponder whether parking and VMs really are an issue: the developer on his machine (physical) sees the same code use all cores (more cores than there are on the VM). We're scratching our heads a bit and just wanted to explore this particular aspect.
Aug
20
comment ESXi and Windows Server CPU parking
Exactly - that's why I'm asking the question, I can't see the point of parking in a VM so should parking be disabled?
Aug
20
comment ESXi and Windows Server CPU parking
For me this isn't a power saving issue as the host is virtulised, so it's ESXi I need to look at. It's more aobut whether it influences/interferes with the hypervisor scheduler itself, as ultimately physical CPU time is alloacted by that, and not by the Windows scheduler. My own gut feeling is that parking should probably be disabled, so the Windows scheduler doesn't have to "park" a CPU that doesn't actually exist, and this might make better use of the underlying physical CPUs by allowing ESX to allocate time accordingly. I was just wondering whether my gut is correct :-)
Aug
20
asked ESXi and Windows Server CPU parking
Jul
2
awarded  Curious
Jun
9
awarded  Notable Question
May
14
revised Connecting to Server 2008 shares fails
MS have a KB out that might be related
Feb
5
awarded  Yearling
Feb
5
awarded  Custodian
Feb
5
reviewed No Action Needed btsync throws file not found. missing libraries?
Nov
7
comment SChannel “cannot find certificate in either LocalMachine or CurrentUser store”
Hi Ryan - question updated with further notes.
Nov
7
revised SChannel “cannot find certificate in either LocalMachine or CurrentUser store”
updates based on further trouble-shooting