Seems like my problems with F25 a year ago, so here is what I did, sorry for lack of details (I'll access the HW within next couple of hours) - SD Card does matter: I used some budget Sandisk (class 10 I believe) worked really slow. I moved to some Samsung Evo (class 10 as well - much better).
I also observerd an improvement when I changed io scheduler to noop. Also an upgrade from 25 to 26 improved a lot. Now hearing You have problems with 27 I'm i doubt... I was about to upgrade this week. 2018-01-24 5:50 GMT+01:00 linux guy <linuxguy123@xxxxxxxxx>:
Update.The dnf update process is still very, very slow on the RPi3. It will take all night (8 hours) to run. For comparison, I installed F27 workstation on a Celeron N3000 machine with 2 GB of RAM and a 128 GB SSD earlier this week. A much larger (workstation versus minimal server) dnf update took in the order of 10 minutes on that machine. I don't think the I/0 speed and processing power difference is an order of 1000 between these two machines.I ran $top in another console while #dnf update was running. dnf is rarely at the top of the top listing. And when it is, it is using ~40% of the CPU and only 12% of the memory. None of the swap memory is being used at all. 90% of the time $top itself is the largest resource user.So why is the #dnf update process so slow ? Is it I/O bound ? Is it an I/O access algorithm problem ?On Tue, Jan 23, 2018 at 9:00 PM, linux guy <linuxguy123@xxxxxxxxx> wrote:So I checked a few things.My SD card was a Kingston 16 GB Class 10, rated for 45MB/sec. It should be OK.The power adapter was a Samsung unit rated at 2A at 5V. I replaced it with a unit rated at 2.4A at 5.25V.I rewrote the SD card. I used gparted to resize the root partition to be the remainder of the space on the card. It was 3.2GB with 2.3 GB used. Now it is ~12GB with 2.3 GB used. I wanted to resize the swap partition, which is set to 488 MB. For some reason gparted wouldn't let me touch it.I rebooted and reinitialized things. It runs much, much faster, but it still seems slow. Each package upgrade in #dnf upgrade is probably taking a minute now, versus 5 minutes before.
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