**** BEGIN LOGGING AT Tue Jun 02 02:59:57 2020
Jun 02 10:33:52 <Herrie> JaMa: New modules just arrived, even though same model these are v4.31 vs v5.38 so now I have Samsung B-die instead of Hynix
Jun 02 10:34:08 <Herrie> That might help in terms of getting higher clocks
Jun 02 11:18:21 <Herrie> JaMa: Posts @ 2933Mhz @ 1.35V, now running Memtest86+
Jun 02 12:42:04 <Herrie> JaMa: Few errors in Memtest86+ on 2933Mhz, didn't use the tool for optimal memsettings yet though. Could be some tweaking might help.
Jun 02 12:42:26 <Herrie> Number of errors is very small though. Now running the oe-tests. I noticed you added MBW tests?
Jun 02 16:57:15 <JaMa> MBW tests are there almost from the start, I was trying to find out how tmpfs performance depends on mem bandwidth (assuming that you need a lot of bandwidth to make tmpfs useful), but it seems that it's other way around, tmpfs with 2 channel memory has much bigger benefit than on 4 channel config (on my trx shown in "individual builds" sheet), probably because a lot of those compilations are executed
Jun 02 16:57:21 <JaMa> in-place in tmpfs
Jun 02 16:58:23 <JaMa> but you still need a lot of ram to use tmpfs (while leaving enough for e.g. linking), so the only real benefit is being more nice to SSDs if you don't really care about the build artifacts
Jun 02 17:02:11 <JaMa> and even that is dubious, because extra 128G ram kit (e.g.
Jun 02 17:02:11 <JaMa> https://www.newegg.com/g-skill-128gb-288-pin-ddr4-sdram/p/N82E16820232953?Item=N82E16820232953&nm_mc=AFC-RAN-COM&cm_mmc=AFC-RAN-COM&utm_medium=affiliates&utm_source=afc-PCPartPicker&AFFID=2558510&AFFNAME=PCPartPicker&ACRID=1&ASID=https%3a%2f%2fpcpartpicker.com%2fproduct%2fTfVG3C%2fgskill-trident-z-neo-128-gb-4-x-32-gb-ddr4-3200-memory-f4-3200c16q-128gtzn&ranMID=44583&ranEAID=2558510&ranSiteID=8BacdVP0GFs
Jun 02 17:02:17 <JaMa> -Rdvb1.f0yPZ7ofFc4V2pCQ is 570USD) while you can get 2TB NVMe PCIe 4.0 for 460USD (e.g. https://www.amazon.com/GIGABYTE-PCI-Express-Interface-Performance-GP-ASM2NE6200TTTD/dp/B07TJX83W2/ref=sr_1_2?dchild=1&keywords=Gigabyte+AORUS+NVMe&qid=1591117292&s=electronics&sr=1-2)
Jun 02 17:05:21 <JaMa> so if the only use of extra ram is to be able to use tmpfs, then you can get extra NVMe instead and with 3600TBW it will probably last as long as DDR4 in mainstream platforms
Jun 02 17:06:25 <JaMa> unless you manage to sell your used ram for good price when upgrading to DDR5 in 2-3 years
Jun 02 17:07:04 <JaMa> which might be easier (or at least more fair) than trying to sell ssd with 3500TB already written to it in 2-3 years, but that is _a lot_ of builds :)
Jun 02 17:09:20 <JaMa> last time I've checked (in windows) my drive didn't have as much data written to it as I've expected, maybe really long commit interval + rm_work help to remove WORKDIRs before they reach the ssd
Jun 02 17:15:36 <Herrie> JaMa: Seems I'm getting quite some fethcing errors with oe-tst
Jun 02 17:15:43 <Herrie> Firefox, Rust, Chromiumx11 etc
Jun 02 17:16:11 <Herrie> Is that known?
Jun 02 17:57:55 <JaMa> Herrie: for metadata or actual source code? but both worked fine for me a week ago
**** ENDING LOGGING AT Wed Jun 03 02:59:57 2020