Re: OOM killer changes
From: Michal Hocko <hidden>
Date: 2016-08-01 20:26:19
Possibly related (same subject, not in this thread)
- 2016-08-01 · Re: OOM killer changes · Michal Hocko <hidden>
On Mon 01-08-16 13:16:49, Ralf-Peter Rohbeck wrote:
On 08/01/16 13:09, Michal Hocko wrote:quoted
On Mon 01-08-16 12:52:40, Ralf-Peter Rohbeck wrote:
[...]
quoted
quoted
root@fs:~# lsscsi [0:2:0:0] disk LSI MR9271-8iCC 3.29 /dev/sda [0:2:1:0] disk LSI MR9271-8iCC 3.29 /dev/sdb [9:0:0:0] disk TOSHIBA External USB 3.0 5438 /dev/sdf [10:0:0:0] disk Seagate Backup+ Desk 050B /dev/sdc [11:0:0:0] disk Seagate Expansion Desk 9400 /dev/sdd [12:0:0:0] disk Seagate Backup+ Desk 050B /dev/sde [13:0:0:0] disk Seagate Expansion Desk 9400 /dev/sdg [14:0:0:0] disk TOSHIBA External USB 3.0 5438 /dev/sdl [15:0:0:0] disk Seagate Expansion Desk 9400 /dev/sdh [16:0:0:0] disk Seagate Expansion Desk 9400 /dev/sdi [17:0:0:0] disk TOSHIBA External USB 3.0 5438 /dev/sdm [18:0:0:0] disk Seagate Expansion Desk 9400 /dev/sdj [19:0:0:0] disk Seagate Expansion Desk 9400 /dev/sdk sda is a 6x 1TB RAID5 and sdb is a single 480GB SSD, both on a MegaRAID controller. The rest are 4TB USB drives that I'm experimenting with.Which devices did you write when hitting the OOM killer?sdc, sdd and sde each at max speed, with a little bit of garden variety IO on sda and sdb.
So do I get it right that the majority of the IO is to those slower USB disks? If yes then does lowering the dirty_bytes to something smaller help? -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>