| OS2 and P4 Hyper-Threading Technology |
|
|
Normal member in user
     posts: 135 since: 21 Mar, 2003 |
|
21. Re:OS2 and P4 Hyper-Threading Technology |
|
|
What I would like to know is if vpc can make use of the hyperthreading as it seems to use the processor directly. If it can then even if OS/2 can't make use of it then maybe windoze running under VPC/2 could and thereby get better performance. Andy |
| Date: 14 Jan, 2004 on 15:12 |
|
|
Normal member in user
       posts: 20 since: 16 Aug, 2003 |
|
22. Re:OS2 and P4 Hyper-Threading Technology |
|
|
| Hi, Andy. Fancy meeting you here!? My recollection is that VPC is informed of the running CPU from the underlying OS. However, if the underlying OS' kernel doesn't support particular features of the CPU (e.g., hyperthreading), then neither will the virtual machine. There was some talk of the upside and downside of hyperthreading (specifically under OS/2) on the newsgroups some time back. Scott weighed in on this, and his initial thought was that hyperthreading would give little if any performance gain, and the overhead might even impose a penalty (under OS/2). Considering his comments, I doubt that he's got support for hyperthreading on his short list, but you never know; Scott is one of those guys who's likely to surprise us with a gift or two when we least expect it! I just set up a new NetWare 6 server for a client. This one is a Proliant (gee, I hate the sound of "HP" Proliant; it's still a Compaq to me) ML370 G3 with a single P4 Xeon 2.8GHz CPU. NetWare 6 immediately recognized two CPUs (hyperthreading enabled). In fact, I had to actually open the case, as I swore that I ordered the box with only one CPU for this client (I usually do dual processors on NetWare these days). Sure enough, one processor and a terminator. I'm not sure if the system would perform better with the hyperthreading stuff turned off, though; it's pretty kickin' right now...  Have a good one. Catch you later.
Lewis -------------------------- Lewis G Rosenthal, CNA Rosenthal & Rosenthal
|
| Date: 19 Jan, 2004 on 07:15 |
|
|
Normal member in user
     posts: 135 since: 21 Mar, 2003 |
|
23. Re:OS2 and P4 Hyper-Threading Technology |
|
|
LewisR (19 Jan, 2004 08:15): Hi, Andy. Fancy meeting you here!?My recollection is that VPC is informed of the running CPU from the underlying OS. However, if the underlying OS' kernel doesn't support particular features of the CPU (e.g., hyperthreading), then neither will the virtual machine.
Howdy Lewis, This is what I would expect but it was one of those things I couldn't give up the idea without running it past others. Andy |
| Date: 19 Jan, 2004 on 16:51 |
|
|
Normal member in user
     posts: 5 since: 08 Jan, 2004 |
|
24. Re:OS2 and P4 Hyper-Threading Technology |
|
|
abwillis (19 Jan, 2004 17:51):
LewisR (19 Jan, 2004 08:15): Hi, Andy. Fancy meeting you here!?My recollection is that VPC is informed of the running CPU from the underlying OS. However, if the underlying OS' kernel doesn't support particular features of the CPU (e.g., hyperthreading), then neither will the virtual machine.
Howdy Lewis, This is what I would expect but it was one of those things I couldn't give up the idea without running it past others. Andy
Question is... is it a scheduler issue? If so, then all you have to do is to prioritize the virtual machine. To do so, you need Priority Master. Also read the white paper and the article.Peace marcus |
| Date: 27 Jan, 2004 on 01:45 |
|
|
Normal member in user
     posts: 135 since: 21 Mar, 2003 |
|
25. Re:OS2 and P4 Hyper-Threading Technology |
|
|
It's ironic that you mention priority master. I was wondering if it would work under eCS and had downloaded it today. I installed it, ran it and decided I would waste more time trying to set it up than I would gain from lost cpu cycles. If I could launch my apps and then use priority master on them would be good but it looks like i have to launch everything through it. Andy |
| Date: 27 Jan, 2004 on 21:55 |
|
|
Normal member in user
     posts: 26 since: 02 Jan, 2001 |
|
26. Re:OS2 and P4 Hyper-Threading Technology |
|
|
| Checked with VPC on a XP system that supported HT and No it didn't support HT so "only" one CPU was available within the system settings. |
| Date: 27 Jan, 2004 on 22:24 |
|
|
Normal member in user
     posts: 5 since: 08 Jan, 2004 |
 |
27. Re:OS2 and P4 Hyper-Threading Technology |
|
|
abwillis (27 Jan, 2004 22:55): It's ironic that you mention priority master. I was wondering if it would work under eCS and had downloaded it today. I installed it, ran it and decided I would waste more time trying to set it up than I would gain from lost cpu cycles. If I could launch my apps and then use priority master on them would be good but it looks like i have to launch everything through it. Andy
Sorry for the late response. [I don't follow the forum as close as some do.] As you found out, the progam does run under eCS since it is OS/2, and the program was originally written for OS/2 by the man who wrote its [OS/2] scheduler. The problem(s) you are having with the program are covered in the Tour for Priority Master and the FAQ. In the Tour, you are shown how to set up the program, and you are also able to set up the 'Run from List'. The GUI page will show better pictures. However, your problem with launching apps not through Priority Master is covered at the bottom of the FAQ. [The last question and answer.] Peace marcus |
| Date: 02 Feb, 2004 on 21:10 |
|
|
Normal member in user
     posts: 135 since: 21 Mar, 2003 |
|
28. Re:OS2 and P4 Hyper-Threading Technology |
|
|
kidmarc (02 Feb, 2004 22:10): The problem(s) you are having with the program are covered in the Tour for Priority Master and the FAQ. In the Tour, you are shown how to set up the program, and you are also able to set up the 'Run from List'. The GUI page will show better pictures.However, your problem with launching apps not through Priority Master is covered at the bottom of the FAQ. [The last question and answer.] Peace marcus
If it were usable in the way the faq references that they didn't release I would be all for it but as is it isn't something I care to fight with. It seems odd that something a dozen people have asked them warrants a place under frequently asked questions. Andy |
| Date: 02 Feb, 2004 on 23:27 |
|
|
Normal member in user
     posts: 5 since: 08 Jan, 2004 |
 |
29. Re:OS2 and P4 Hyper-Threading Technology |
|
|
abwillis (03 Feb, 2004 00:27):It seems odd that something a dozen people have asked them warrants a place under frequently asked questions. Andy
It wasn't a dozen asking them; it was a dozen responses to Ted's comments to users on a bug. Ted, a former IBMer, is the sole author of Priority Master. As stated, he found a glitch in the development of version 3 that brought down the system. He then inquired as to how many people were interested in further development of PM and he received 12 responses. Essentially, costs to fix the problem and further develop PM would overwhelm interest in another version. Unless interest increases to warrant a return to development or someone(s) ante up's funding, PM for OS/2 - eCS will stay frozen at 2.6. Ted dropped the price drastically on the OS/2 version while maintaining a higher price on the Windows version, yet more people have purchased the Windows version than the OS/2 one. This speaks greatly of the OS/2 - eCS Community. It's too bad Ted changed the website (for a second time). He had some interesting testimonials as well as helpful information. One testimonial told of a businessman who had a problem with the employees wanting new computers because the current ones were too slow. After applying PM, and challenging them to make the computer less responsive (using a monitoring application to check CPU useage), he never had a problem with the employees again. Another had problems with SSIQ (aka SIQ). After PM, no more SSIQ/SIQ problems. It's a great piece of software; it's sad few recognize or need its value. Peace marcus |
| Date: 03 Feb, 2004 on 01:40 |
|
|
Normal member in user
     posts: 135 since: 21 Mar, 2003 |
|
30. Re:OS2 and P4 Hyper-Threading Technology |
|
|
I can see the benefit but unfortunately it won't be updated to be used as I would use it. I would easily pay twice the current cost if it worked as I would use it but it isn't worth half the cost to me the way it works currently. I am looking for a program I can set the priority on running apps which is what prompted me to check out PM. In order to use it as is requires such a fundamental shift in the way I run apps as to make it unproductive for me. If I thought there was any chance it would be updated I would go ahead and buy it now and then purchase the upgraded version later but as that is apparently not going to occur I can't justify the expense for an app I wouldn't use. Oh well, I certainly don't blame him for not updating when it would be a losing proposition but I certainly wish I had what it had promise to be. Andy |
| Date: 03 Feb, 2004 on 03:06 |
|
|
| OS2 and P4 Hyper-Threading Technology |
|
|
| All times are CET+1. |
< Prev. | P. 1 2 | Next > |
|