Re: zfs with operations like rm -rf takes a very long time recently

Reply: void : "Re: zfs with operations like rm -rf takes a very long time recently"
In reply to: void : "Re: zfs with operations like rm -rf takes a very long time recently"
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From: Mateusz Guzik <mjguzik_at_gmail.com>
Date: Sun, 16 Oct 2022 22:07:00 UTC

On 10/17/22, void <void@f-m.fm> wrote:
> On Sun, 16 Oct 2022, at 19:55, Mateusz Guzik wrote:
>
>> Just in case, can you test with this: sysctl
>> vfs.zfs.per_txg_dirty_frees_percent=5
>>
>> As in, can you repeat the test multiple times, flipping
>> vfs.zfs.per_txg_dirty_frees_percent between 5 and 30.
>
> After setting this and starting the rm -rf, it completed!!! before I had
> time to set up the other tests :D
>
> Maybe this'll solve the problem?
>

No, it was flipped because the smaller value was causing a performance
problem the other way elsewhere.

This needs to be investigated.

>
>


-- 
Mateusz Guzik <mjguzik gmail.com>