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Thread: CPU Usage - lots of spikes |
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Thread Status: Active Total posts in this thread: 34
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AgrFan
Senior Cruncher USA Joined: Apr 17, 2008 Post Count: 397 Status: Offline Project Badges: 
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What advantage would I have for using Tthrottle if I already limit the CPU usage % on Boinc and the CPU clock and fan are already automatically adjusted by the OS, according to the temperature? wcgridmember, did the cpu usage settings I suggested above help?
[Edit 3 times, last edit by AgrFan at Jul 25, 2016 11:36:03 PM] |
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KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges: 
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What advantage would I have for using Tthrottle if I already limit the CPU usage % on Boinc and the CPU clock and fan are already automatically adjusted by the OS, according to the temperature? 1. no spikes, constant temp. & less fan speeding up - slowing down 2. 50% CPU clock = 50% time on WCG 50% throttle on Tthrottle = 100% time on WCG with 50% throttle yes, you do have to run Tthrottle & spend some time on running it...but it's OK, 'cause it's less than 50% CPU time on BOINC!  |
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wcgridmember
Advanced Cruncher Joined: Mar 30, 2005 Post Count: 112 Status: Offline Project Badges: 
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@AgrFan
Yes, if I use 25/100 the spikes are practically eliminated, but I'm afraid I am not distributing the load between the two cores evenly even if the task hops between the two cores from time to time and I'm also afraid that this setting might cause more overheating than 50/50. @KLiK I could not understand what you meant with your second comment: ==== 2. 50% CPU clock = 50% time on WCG 50% throttle on Tthrottle = 100% time on WCG with 50% throttle yes, you do have to run Tthrottle & spend some time on running it...but it's OK, 'cause it's less than 50% CPU time on BOINC! ==== Another thing that bothers me: how do I know the best temperature to set on TThrottle? Does TThrottle have a database with optimal temperatures for most hardware? Thank you for your time! |
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KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges:
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when you use BOINC % of CPU, it calcs the % of time of CPU...
----------------------------------------when you use TThrottlem, you set the desired temp...& yes, it has Tjunc for most of the modern processors - but you check it out before setting the Tthrottle! Anyway, you set the top temp that Tthrottle regulates...so it works on 100% of CPU time, just that CPU is tasked up to some % for BOINC...in other words you get the 100% of CPU time! ;) & 'cause of WCG stimulates out "time donation"...so using sthg like Tthrottle is great advantage than setting CPU on time % in BOINC! ---------------------------------------- [Edit 1 times, last edit by KLiK at Aug 18, 2016 9:12:50 PM] |
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wcgridmember
Advanced Cruncher Joined: Mar 30, 2005 Post Count: 112 Status: Offline Project Badges:
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What is Tjunc?
If what you're saying is that with TThrottle I am reporting more time used on tasks, I disagree that that is an advantage. First, it seems to me that's cheating. Also, it's a low quality cheating, because the results and points gained won't increase as much as the reported time used on tasks, thus decreasing Efficiency (Pts/h). |
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KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges:
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What is Tjunc? If what you're saying is that with TThrottle I am reporting more time used on tasks, I disagree that that is an advantage. First, it seems to me that's cheating. Also, it's a low quality cheating, because the results and points gained won't increase as much as the reported time used on tasks, thus decreasing Efficiency (Pts/h). to answer your Tjunc question, here: http://www.intel.com/content/www/us/en/support/processors/000005597.html https://en.wikipedia.org/wiki/Junction_temperature Well, it might be viewed that way! But: 1. using BOINC on 50% will get you 12h per day (24h) 2. using BOINC with Tthrottle on some 60-90% of Tjunc °C, will get you sthg like 23h 30min You say it's cheating... I say: my computers are ON for 24/7...so it's nice to get as most from it as I can! & as WCG gives people badges according to "time spend on project"...it's up to me to take the most out of that! Your number of results will actually increase...'cause all my desktops run on 90-100% on Tthrottle...while I have 75-80°C set on Tthrottle on CPU! Same settings on laptops gives 30-70% on smaller T60...or 90-100% on bigger Dells or T61! Also, it was scotching hot during the summer with up to 37°C in Zagreb, Croatia...not it's 15-24°C these days...as the temp. with go down with season, my use of computer will increase the number of % of CPU use...with that more results & more points will come! Do know that I've "melted" few nVidia with SETi@home with cooler failing (8500GT, 220GT, etc.)...so Tthrottle can also manage throttling of GPU on BOINC! So, using Tthrottle is a way to keep my CPUs & GPUs from junction temp & damage! & it's upon us to keep our hardware "safe & working"...so using Tthrottle (or similar program) is advisable!  (these are only my opinions, based on my current knowledge) |
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wcgridmember
Advanced Cruncher Joined: Mar 30, 2005 Post Count: 112 Status: Offline Project Badges:
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I now have an idea of what is Tjunc. I've just tried TThrottle and it's strange, because setting CPU to 50/100 the temperatures seem relatively low, not much above 40º C. My father said the temperature shouldn't go above 80º C. So, I've set Tjunc to this value, but it seems TThrottle has not much work since the temp is around 43º C.
----------------------------------------Any comments? [Edit 1 times, last edit by wcgridmember at Aug 19, 2016 8:45:41 AM] |
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KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges:
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I now have an idea of what is Tjunc. I've just tried TThrottle and it's strange, because setting CPU to 50/100 the temperatures seem relatively low, not much above 40º C. My father said the temperature shouldn't go above 80º C. So, I've set Tjunc to this value, but it seems TThrottle has not much work since the temp is around 43º C. Any comments? if you run BOINC & on Tthrottle Tjunc is set on 80°C...while your CPU heats to 43°C, then you got a very efficient cooling! also, when you use Tthrottle, you have to put a BOINC on 100% CPU time & 100% cores... & yes, 75-80°C is more than enough for desktop! |
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wcgridmember
Advanced Cruncher Joined: Mar 30, 2005 Post Count: 112 Status: Offline Project Badges:
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Tjunc was set on 100ºC. It was I who changed it to 80ºC. Now that I've set it back to 100ºC and set core temp to 60ºC, the CPU temperature is around 60ºC.
----------------------------------------You said with TThrottle you have to put BOINC @ 100/100. My father prefers 50/100 and says if I insist on 100/100 he will uninstall BOINC. Auch! What do you mean with "75-80°C is more than enough for desktop"? Is it that for a desktop 75-80ºC is a good range for setting the core temp? Please note that I'm using BOINC only on laptops. Also on http://www.pcadvisor.co.uk/how-to/desktop-pc/...emperature-image-3498564/ I've read: "In general you should consider 60 degrees Celcius the absolute maximum for long periods, but aim for 45-50 degrees to be safe." What should I take from this? [Edit 1 times, last edit by wcgridmember at Aug 19, 2016 12:03:39 PM] |
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deltavee
Ace Cruncher Texas Hill Country Joined: Nov 17, 2004 Post Count: 4894 Status: Offline Project Badges: 
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What should I take from this? Everyone has their own opinions. You need to make the decisions that you think are best for your systems. |
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