Hi, Thanks to all, for their suggestions on this post of mine.
Half of the responses I understood, half were above my head. Fortunately, Thunderbird finished all it's re-indexing. So CPU demand is back down to normal. But I'll save your ideas, and implement some of them before January next year (when this is likely to reoccur) or before I run Handbrake or Transmageddon again. I'll also be upgrading to Ubuntu 12.4 some time between now and April, when the LTS runs out. Maybe to Mint (as I like Gnome) if Mint also has LTS for 3-5 years. (Then again, maybe I'm misunderstanding the whole Distro phenomenon.) While waiting for your responses to this post, I took the lid off my tower case and pointed a small house fan at the motherboard. CPU temp dropped from 60C down to 35C in a couple of minutes. Hmm. All vents are clear, heat-sinks are clean, and fans are spinning. Maybe the case just wasn't designed for heavy workloads in Melbourne summers. A couple years ago, I spent many frustrating hours trying to find out the max safe temp for my CPUs. Somewhere, somehow, I =finally= stumbled across the following and saved it to disk. Hence my concern when it hits 60C. > Intel Pentium D 930 > Core Presler > No.Core 2 > Frequency 3000 MHz > L1 cache 12 KB + 16 KB > L2 cache 2048 KB > L3 cache 0 KB > Socket 775-FCLGA6 > Technology 65 nm > FSB 200 MHz > HT/QPI/DMI 800 MHz > Voltage 1,225-1,325V > TDP 95 W > OEM HH80553PG0804M > BOX BX80553930 BX80553930 BX80553930 > Steep B1 C1 > Max. temp. 63°C > Date 2006-01-05 > QEZJ QJZB QMVD SL8WR SL94R SL95X BTW Also worked up a quick cheap ugly but effective kludge (but I repeat myself) for cooling my laptop: Get a clean empty pizza box of appropriate size. Map out critical air vents on bottom of laptop. Cut out corresponding holes on lid of pizza box. Cut out a similar total area of holes on back "hinge" edge of pizza box for intake/exhaust. Cheers, Carl On 10/01/13 10:42, Carl Turney wrote: > Hi All, > > Running Thunderbird 15.0.1 on Ubuntu 10.4 (Please don't suggest changing > my email client or Linux to your current favourites.) > > Thunderbird is doing a major re-indexing of messages, which is really > pushing my CPU to its limits. (i.e. getting over 60C core temperature, > email process using 100-160% of CPU usage - dual core CPU) > > Full details of my hardware, and the CPU usage are documented here: > http://forums.mozillazine.org/viewtopic.php?f=31&t=2399189 > > That was this time last year. Doing the same thing now with my updated > version of TB. (Only happens for a couple days, once a year, when I > shift all my Sent messages of the previous calendar year to an "archive" > folder.) > > Could any of you point me to instructions to get Ubuntu to limit or > choke the demand that the Thunderbird process calls upon the CPU? > > Thanks =very= much. > > Carl Turney > Bayswater > _______________________________________________ > luv-main mailing list > [email protected] > http://lists.luv.asn.au/listinfo/luv-main > _______________________________________________ luv-main mailing list [email protected] http://lists.luv.asn.au/listinfo/luv-main
