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#1 2016-10-31 22:30:48

Potomac
Member
Registered: 2011-12-25
Posts: 526

system lags when hard disk is heavily used since linux 4.8.4-1

Hello,

I notice since linux 4.8.4-1 that during high I/O operations ( hard disk, decompression of a huge zip/tar.gz file ) that my system seems to have "micro-freezes", I notice lags ( mouse doesn't response immediatly ) and some operations like a "pacman -Syu" takes much more time,

I have an old motherboard : gigabyte GA-P31-DS3L, socket 775, chipset intel P31, cpu intel dual core E6800 3.3 Ghz, 4 Gb ram,

I want to know if I am alone with this problem ?

smart infos of my hard disk ( western digital 640 Gb ) seems ok, no problems, so it's not a hardware problem, it's probably a bug in linux kernel

thanks

Last edited by Potomac (2016-10-31 22:33:34)

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#2 2016-11-03 08:26:44

tabsterleir
Member
Registered: 2015-07-27
Posts: 17

Re: system lags when hard disk is heavily used since linux 4.8.4-1

Possibly related to your I/O scheduler? I've found with the kernel's default I/O scheduler I would get hangs during heavy I/O operations on my platter-based systems.

See here: https://wiki.archlinux.org/index.php/Im … schedulers

I personally use the "Multi-Queue Block IO Queuing Mechanism" on all my systems (low/high end, HDD/SSD). It seems to balance the load nicely and minimise hangs/stutters.


[PRIMARY / Arch Linux x86_64 / HP ENVY x360 / Ryzen 3 2300U / 8GB / 256GB / Radeon Vega Mobile / Plasma 5]

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#3 2016-11-04 17:52:03

Potomac
Member
Registered: 2011-12-25
Posts: 526

Re: system lags when hard disk is heavily used since linux 4.8.4-1

thanks for your answer,

so it seems that the default setting for I/O scheduler in linux kernel package is not optimized,

but with previous versions of linux kernel I didn't have this problem, maybe it's a bug, a regression in 4.8.x kernel

Last edited by Potomac (2016-11-04 17:52:19)

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