mersenneforum.org prime95 and Chrome
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 2014-08-09, 02:54 #1 Beaumont   Jul 2014 22 Posts prime95 and Chrome I'm running prime95 with Priority 1. For just about all processes and programs that I run, the priority system seems to be working, prime95 drops down and the other process takes over. However, Chrome does not work that way. For the first few weeks of running prime95 on my new computer everything worked fine, including Chrome. However, at some point (and I don't know what changed if anything), Chrome stopped taking priority over prime95. It takes a long time to change tabs, type anything, open Chrome, let alone actually perform anything. But the instant that I stop all my worker threads, Chrome catches back up to itself and everything I clicked or tried to do snaps into place. Is this a known issue with a known fix? Any suggestions? I've been working like this for about three weeks now and I'm getting tired of pulling up prime95 and stopping it every time I want to go online. Also, my girlfriend tends to forget to start prime95 back up which defeats the purpose of having it running. Any help or suggestions would be greatly appreciated! Thanks!
 2014-08-09, 04:40 #2 TheMawn     May 2013 East. Always East. 11·157 Posts http://mersenneforum.org/showthread.php?t=19502 I'm glad to see someone else is having this problem too. Sorry you're having the problems, though. I know they can be frustrating. Other people use this PC but until now they wouldn't even know Prime is running. Now, I'm considering just giving up and running just three workers so that chrome can respond properly.
 2014-08-09, 04:48 #3 Beaumont   Jul 2014 416 Posts Yeah, I saw that thread right after I posted mine. Did loading an older version of Chrome solve your issue at all?
 2014-08-09, 05:22 #4 LaurV Romulan Interpreter     Jun 2011 Thailand 5·11·157 Posts There is not only Chrome, but other programs too, including Acrobat Reader (newer versions after v9, that is years ago already), just to say one of the most known tool. All this programs have in common the fact that they have parts of them (threads) running at priority 1, same as P95, so they won't push P95 out of the way. For all these, there is a simple solution, discussed already many times, "pause one thread while running xxxx program". See undoc.txt [edit: the bad guy in me says: use firefox! hehe] Last fiddled with by LaurV on 2014-08-09 at 05:23
2014-08-09, 05:46   #5
Uncwilly
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Quote:
 Originally Posted by LaurV There is not only Chrome, but other programs too, including Acrobat Reader (newer versions after v9, that is years ago already), just to say one of the most known tool. All this programs have in common the fact that they have parts of them (threads) running at priority 1, same as P95, so they won't push P95 out of the way.
I noticed once, when installing Acrobat Reader X, that the install program had that problem.

 2014-08-09, 06:05 #6 TheMawn     May 2013 East. Always East. 110101111112 Posts I looked into changing the priorities. In Windows 7's task manager, I can right click processes to see their priority and change it. There are multiple Chrome.exe's (it has always been this way), some of which run at "normal" priority and some of which run at "below normal" priority. What confuses me is prime95.exe runs at "normal" priority. There is also a "low" which is not used.
 2014-08-09, 06:09 #7 TheMawn     May 2013 East. Always East. 11·157 Posts Setting everything to normal did nothing. Same issues. Is the 1-10 numbering system a Windows 95 relic?
 2014-08-09, 06:46 #8 kladner     "Kieren" Jul 2011 In My Own Galaxy! 9,923 Posts As to Prime95 priority, George has explained that it operates at a different level than that accessed through Task Manager > Processes. I don't remember the terminology for these different mechanisms, but P95 is supposed to run so that it always yields to other processes, regardless of the Normal setting seen in Task Manager. Unfortunately, a number of Adobe applications, including Photoshop, get stalled by P95 running on all cores. I used Code: PauseWhileRunning=photoshop[3],bridge[3] in Prime.txt for quite some time when the CPU was completely occupied. The numbers in square brackets indicate how many cores to stop. Currently, I have this line commented as I'm only using 6 of 8 cores for P95. Last fiddled with by kladner on 2014-08-09 at 06:47
 2014-08-10, 18:15 #10 garo     Aug 2002 Termonfeckin, IE 2,753 Posts A recent update of chrome caused this problem for me too.I put the following line in prime.txt and it seems to have solved the issue. Code: PauseWhileRunning=chrome.exe[1] It was annoying losing a day's worth of crunching every time I forgot to turn Prime95 back on.
 2014-08-10, 22:41 #11 TheMawn     May 2013 East. Always East. 11·157 Posts Is there a way to control which worker is stopped?

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