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On 05/04/2022 14:58, Laurence Perkins wrote: |
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> |
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>> -----Original Message----- |
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>> From: Dale <rdalek1967@×××××.com> |
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>> Sent: Monday, April 4, 2022 4:37 PM |
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>> To: gentoo-user@l.g.o |
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>> Subject: Re: [gentoo-user] LVM and moving things around |
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>> One thing that annoys me, it trying to use swap. I don't want to disable it because on occasion Firefox goes nuts and starting hogging memory really bad. I have swappiness set to like 5 or something which means it shouldn't use it but when using rsync, it creeps some in. When it does, that results in some slowness. I have a little script thing that clears all that but still, I may set it to 3 or maybe 2 for a bit. Me ponders the thought. |
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>> I'm making progress. Feel sorry for those hard drives tho. ;-) |
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>> Dale |
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>> :-) :-) |
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>> |
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> |
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> I'm told that you can use cgroups for dealing with that kind of thing such that, for example, only Firefox is allowed to be swapped. I haven't had time to dig into it, but it seems like a useful tool. |
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> Also, the compressed swap and zram swap devices with backing stores offer a fairly significant boost to the speed of swap so long as the data being swapped is compressible. |
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I don't know how you take advantage of it, but linux by default caches |
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disk i/o. You can tell it to "don't cache" and apparently it makes a |
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major difference. Given that rsync reads once and then never uses it |
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again, you don't want it cached. |
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I guess that would improve things for you massively if you could use it. |
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Cheers, |
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Wol |
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