| Summary: | Constant I/O from process kworker events_freezable_power | ||
|---|---|---|---|
| Product: | Mageia | Reporter: | Ken Arromdee <arromdee2> |
| Component: | RPM Packages | Assignee: | Kernel and Drivers maintainers <kernel> |
| Status: | NEW --- | QA Contact: | |
| Severity: | normal | ||
| Priority: | Normal | CC: | davidwhodgins, rolfpedersen |
| Version: | 8 | ||
| Target Milestone: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Source RPM: | kernel 5.10.52-desktop-1.mga8 | CVE: | |
| Status comment: | |||
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Description
Ken Arromdee
2021-07-25 19:03:47 CEST
Thank you for your report. To tell us something about your system, please post the O/P of: $ inxi -MSDp CC:
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lewyssmith /home/arromdee% inxi -MSDp System: Host: localhost Kernel: 5.10.52-desktop-1.mga8 x86_64 bits: 64 Desktop: fVWM2 2.6.9 Distro: Mageia 8 mga8 Machine: Type: Desktop Mobo: Micro-Star model: A520M PRO (MS-7D14) v: 1.0 serial: <superuser required> BIOS: American Megatrends v: 1.00 date: 08/21/2020 Drives: Local Storage: total: 1.82 TiB used: 635.32 GiB (34.1%) ID-1: /dev/sda vendor: Samsung model: SSD 850 EVO 2TB size: 1.82 TiB Partition: ID-1: / size: 57.42 GiB used: 11.08 GiB (19.3%) fs: ext4 dev: /dev/sda5 ID-2: /home size: 1.14 TiB used: 527.16 GiB (45.0%) fs: ext4 dev: /dev/sda7 ID-3: /media/windows size: 585.94 GiB used: 97.05 GiB (16.6%) fs: ntfs dev: /dev/sda2 ID-4: /media/windows-boot size: 100 MiB used: 28.6 MiB (28.6%) fs: ntfs dev: /dev/sda1 ID-5: swap-1 size: 29.3 GiB used: N/A (0.0%) fs: swap dev: /dev/sda6 /home/arromdee% Thank you for that. My own box is a humdrum uncomplicated desktop system with SATA disc. I have been running for a bit with nothing user active. The machine disc light flashes occasionally and variably: sometimes idle for longish intervals, sometimes a few flashes in a short time, or single ones at shorter intervals. This seems normal: there are things like cron, mgaapplet, msec. Running just iotop, same behaviour; and like the report, mostly at the top a couple of kworker things. > I just upgraded my computer Is the installed Mageia system the same as before? Is it possible that the two systems indicate(d) disc activity differently? In any event, I feel that what you are seeing is 'normal' - except for your "every few seconds". -------------------- The Arch thread you found in comment 0 is very similar, and worth a read. At one point it says: "This constant idle disk writing (a SSD killer btw) is caused by the "workqueue power-efficient mode" power management option. The kernel config flag is WQ_POWER_EFFICIENT_DEFAULT and should be off by default. There is a good reason this is off in the kernel defconfig." Which of course may not be relevant. In the light of that discussion, assigning this to the kernel team. Assignee:
bugsquad =>
kernel Do you have smartd.service or hddtemp.service running? CC:
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davidwhodgins >Is the installed Mageia system the same as before? Yes. >Is it possible that the two systems indicate(d) disc activity differently? It's possible but I have no way to determine this. iotop always shows it as I/O, not as disk reads/disk writes. I occasionally get a [jdb2/sda7-8] which is writing a journal, and that does show disk reads/writes, but that goes away if I leave the machine running without doing anything, so it's probably unrelated. >The kernel config flag is WQ_POWER_EFFICIENT_DEFAULT and should be off by default. As I said, I checked this and it's already set to 'N'. >Do you have smartd.service or hddtemp.service running? No. These aren't in mcc and don't seem to be running. [root@localhost arromdee]# service --status-all|grep smart [root@localhost arromdee]# service --status-all|grep hdd [root@localhost arromdee]# Further information: This problem doesn't appear while I am on the grub2 menu. It does appear if I reboot into single user mode or into the Mageia 8.0 disk using rscue. And now that I look more closely, this isn't that similar to the archlinux thread. That one has writes every minute, and they actually show up as writes, not only as I/O. This one is every two seconds or so and they are I/O only. I'm only assuming that the I/O is turning on the drive light, since there's no real disk activity. Even if it is, it may be that my BIOS is just buggy and shouldn't be turning on the light. It's the kind of bug that would go unnoticed, because Windows accesses the disk a lot and that'd mnask it. Try booting with the kernel options pcie_port_pm=off pcie_aspm=off Does not help. /home/arromdee% cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-5.10.52-desktop-1.mga8 root=UUID=312bf85e-3d2e-4ba7-ac79-411bd00afc2a ro pcie_port_pm=off pcie_aspm=off nosplash quiet noiswmd resume=UUID=ab7e7f00-83e0-4d28-9671-745379099456 audit=0 rd.systemd.unit=multi-user.target vga=791 /home/arromdee% (In reply to Ken Arromdee from comment #5) ... > > >Do you have smartd.service or hddtemp.service running? > > No. These aren't in mcc and don't seem to be running. > > [root@localhost arromdee]# service --status-all|grep smart > [root@localhost arromdee]# service --status-all|grep hdd > [root@localhost arromdee]# [rolf@x570i ~]$ sudo service --status-all|grep smart [rolf@x570i ~]$ rpm -qf `which service` initscripts-9.78-27.mga8 I see the cmdline in Comment #9 references systemd, an "upgrade" to initscripts, aiui. Whereas `service` on my machine returns the same as you, I'm not so ambitious as to try to hang on to initscripts. [rolf@x570i ~]$ sudo systemctl -a | grep smart smartd.service loaded active running Self Monitoring and Reporting Technology (SMART) Daemon [rolf@x570i ~]$ rpm -qf `which systemctl` systemd-246.15-1.mga8 FWIW. CC:
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rolfpedersen [root@localhost arromdee]# systemctl -a | grep smart [root@localhost arromdee]# |