[etherlab-users] ec_igb memory leak?
gavin.lambert at tomra.com
Thu Mar 12 23:27:55 CET 2020
The IGB driver is relatively new and probably hasn't been as well tested as the other drivers.
Any chance you can try it with kernel 4.4? This is the only (4.x) version provided by upstream Etherlab, so it'd be good to work out whether the leak is present in that version as well or if I've somehow managed to introduce it during the course of trying to patch it for newer kernel versions.
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From: Gary Grobe
Sent: Friday, 13 March 2020 09:57
To: etherlab-users at etherlab.org
Subject: [etherlab-users] ec_igb memory leak?
Has anyone else noticed memory leaks when loading the ec_igb mod?
I'm running a 4.19.106 LTS release with RT 44 and Etherlabs 1.5.2 with patch 20190904. I've tested every RT release as far back as 4.19.82 with the same results. I have had days of running the master without issue when used with ec_generic and ec_e1000e.
In this case, it appears to be the ec_igb driver.
I'll boot the kernel without any of the Etherlab modules and watch the used memory in top while performing no other tasks. It'll stay quite stable for as long as I run it. Then I'll add in the ec_master module and other than a slight bump, it'll stay quite stable for as long as I run it.
Then I'll add the ec_igb module and that's when the used mem will continuously increase. Within 5 minutes I noticed an increase of 55320KiB.
I find it strange I've not heard other reports about this happening, but would like to know if anyone else has thoughts on this.
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