Re: btrfs balance problems

2018-01-06 Thread James Courtier-Dutton
On 28 December 2017 at 00:39, Duncan <1i5t5.dun...@cox.net> wrote: > > AFAIK, ionice only works for some IO schedulers, not all. It does work > with the default CFQ scheduler, but I don't /believe/ it works with > deadline, certainly not with noop, and I'd /guess/ it doesn't work with > block-mult

Re: btrfs balance problems

2017-12-29 Thread Hans van Kranenburg
On 12/28/2017 12:15 PM, Nikolay Borisov wrote: > > On 23.12.2017 13:19, James Courtier-Dutton wrote: >> >> During a btrfs balance, the process hogs all CPU. >> Or, to be exact, any other program that wishes to use the SSD during a >> btrfs balance is blocked for long periods. Long periods being mo

Re: btrfs balance problems

2017-12-29 Thread Kai Krakow
Am Thu, 28 Dec 2017 00:39:37 + schrieb Duncan: >> I can I get btrfs balance to work in the background, without adversely >> affecting other applications? > > I'd actually suggest a different strategy. > > What I did here way back when I was still on reiserfs on spinning rust, > where it made

Re: btrfs balance problems

2017-12-28 Thread Nikolay Borisov
On 23.12.2017 13:19, James Courtier-Dutton wrote: > Hi, > > During a btrfs balance, the process hogs all CPU. > Or, to be exact, any other program that wishes to use the SSD during a > btrfs balance is blocked for long periods. Long periods being more > than 5 seconds. > Is there any way to mult

Re: btrfs balance problems

2017-12-27 Thread Duncan
James Courtier-Dutton posted on Wed, 27 Dec 2017 21:39:30 + as excerpted: > Thank you for your suggestion. Please put your reply in standard list quote/reply-in-context order. It makes further replies, /in/ /context/, far easier. I've moved the rest of your reply to do that, but I shouldn

Re: btrfs balance problems

2017-12-27 Thread waxhead
James Courtier-Dutton wrote: Hi, Thank you for your suggestion. It does not help at all. btrfs balance's behaviour seems to be unchanged by ionice. It still takes 100% while working and starves all other processes of disk access. I can I get btrfs balance to work in the background, without adve

Re: btrfs balance problems

2017-12-27 Thread James Courtier-Dutton
Hi, Thank you for your suggestion. It does not help at all. btrfs balance's behaviour seems to be unchanged by ionice. It still takes 100% while working and starves all other processes of disk access. I can I get btrfs balance to work in the background, without adversely affecting other applicati

Re: btrfs balance problems

2017-12-23 Thread Alberto Bursi
On 12/23/2017 12:19 PM, James Courtier-Dutton wrote: > Hi, > > During a btrfs balance, the process hogs all CPU. > Or, to be exact, any other program that wishes to use the SSD during a > btrfs balance is blocked for long periods. Long periods being more > than 5 seconds. > Is there any way to mu

btrfs balance problems

2017-12-23 Thread James Courtier-Dutton
Hi, During a btrfs balance, the process hogs all CPU. Or, to be exact, any other program that wishes to use the SSD during a btrfs balance is blocked for long periods. Long periods being more than 5 seconds. Is there any way to multiplex SSD access while btrfs balance is operating, so that other a