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Michael wrote: |
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> On Saturday, 2 May 2020 09:53:06 BST Dale wrote: |
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>> Wols Lists wrote: |
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>>> On 01/05/20 21:29, Dale wrote: |
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>>>> It gets really slow to respond when it uses swap but it beats crashing. |
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>>>> Just set swapiness to a low number. I think mine is set to 10. |
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>>>> |
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>>>> Given the cheapness of hard drives, I'm not sure why having several |
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>>>> gigabytes of swap space is of much concern. I have the same amount of |
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>>>> ram as you and I have a 12GB swap space. I use LVM so I can grow it if |
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>>>> needed or just add another swap space. I might add, I've seen times |
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>>>> where it gets used. |
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>>> That first paragraph is why too much swap space is bad - if an app goes |
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>>> rogue it can kill system response and make regaining control of the |
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>>> system a nightmare. |
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>>> |
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>>> Accidentally or on purpose, if a system runs out of ram and starts |
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>>> thrashing, you're in big trouble if it's an app eating memory like no |
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>>> tomorrow. |
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>>> |
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>>> Cheers, |
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>>> Wol |
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>>> |
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>>> . |
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>> That's why I set swapiness to a low number. I don't want it to use swap |
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>> unless it is to prevent a crash. If I set it to a higher number, it |
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>> wants to use swap even when there is memory available. Once it starts |
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>> using swap, it gets slow. The more it uses, the worse it gets. |
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>> However, it beats it rebooting without umounting partitions and such. |
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>> If nothing else, it may give me time to use the alt-sys sequence. |
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>> |
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>> I'm maxed out on memory at the moment but wish I could get and afford |
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>> 64GBs, in a way. Still, I'd have a swap partition. |
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>> |
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>> Dale |
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>> |
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>> :-) :-) |
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> I'd be interested to know as a comparison if Nikos' and Dale's I/O |
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> unresponsiveness in swapping sees an improvement with the I/O scheduler for |
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> spinning drives set to bfq; e.g.: |
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> |
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> echo bfq > /sys/block/sda/queue/scheduler |
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|
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This is its setting at the moment. |
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|
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|
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root@fireball / # cat /sys/block/sda/queue/scheduler |
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noop deadline [cfq] |
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root@fireball / # |
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|
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I know I can echo it in but where do I set that to that when booting? |
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Same as swappiness?? I'm willing to set it and see what it does next |
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time swap pops into gear. Given it is me, it may not be to long. LOL |
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I have to say, while sddm-helper is still absorbing to much memory, it |
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is holding steady at around 1GB or 3.3%. It's nowhere near enough to |
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test this theory, yet. :/ |
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|
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Dale |
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|
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:-) :-) |
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