Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-29 Thread Josef Bacik
On Tue, Jan 29, 2019 at 07:39:38PM +0100, Andrea Righi wrote: > On Mon, Jan 28, 2019 at 02:26:20PM -0500, Vivek Goyal wrote: > > On Mon, Jan 28, 2019 at 06:41:29PM +0100, Andrea Righi wrote: > > > Hi Vivek, > > > > > > sorry for the late reply. > > > > > > On Mon, Jan 21, 2019 at 04:47:15PM -0500

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-29 Thread Andrea Righi
On Mon, Jan 28, 2019 at 02:26:20PM -0500, Vivek Goyal wrote: > On Mon, Jan 28, 2019 at 06:41:29PM +0100, Andrea Righi wrote: > > Hi Vivek, > > > > sorry for the late reply. > > > > On Mon, Jan 21, 2019 at 04:47:15PM -0500, Vivek Goyal wrote: > > > On Sat, Jan 19, 2019 at 11:08:27AM +0100, Andrea

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-28 Thread Vivek Goyal
On Mon, Jan 28, 2019 at 06:41:29PM +0100, Andrea Righi wrote: > Hi Vivek, > > sorry for the late reply. > > On Mon, Jan 21, 2019 at 04:47:15PM -0500, Vivek Goyal wrote: > > On Sat, Jan 19, 2019 at 11:08:27AM +0100, Andrea Righi wrote: > > > > [..] > > > Alright, let's skip the root cgroup for no

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-28 Thread Andrea Righi
Hi Vivek, sorry for the late reply. On Mon, Jan 21, 2019 at 04:47:15PM -0500, Vivek Goyal wrote: > On Sat, Jan 19, 2019 at 11:08:27AM +0100, Andrea Righi wrote: > > [..] > > Alright, let's skip the root cgroup for now. I think the point here is > > if we want to provide sync() isolation among cg

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-21 Thread Vivek Goyal
On Sat, Jan 19, 2019 at 11:08:27AM +0100, Andrea Righi wrote: [..] > Alright, let's skip the root cgroup for now. I think the point here is > if we want to provide sync() isolation among cgroups or not. > > According to the manpage: > >sync() causes all pending modifications to file

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-19 Thread Andrea Righi
On Fri, Jan 18, 2019 at 02:46:53PM -0500, Josef Bacik wrote: > On Fri, Jan 18, 2019 at 07:44:03PM +0100, Andrea Righi wrote: > > On Fri, Jan 18, 2019 at 11:35:31AM -0500, Josef Bacik wrote: > > > On Fri, Jan 18, 2019 at 11:31:24AM +0100, Andrea Righi wrote: > > > > This is a redesign of my old cgro

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-18 Thread Josef Bacik
On Fri, Jan 18, 2019 at 07:44:03PM +0100, Andrea Righi wrote: > On Fri, Jan 18, 2019 at 11:35:31AM -0500, Josef Bacik wrote: > > On Fri, Jan 18, 2019 at 11:31:24AM +0100, Andrea Righi wrote: > > > This is a redesign of my old cgroup-io-throttle controller: > > > https://lwn.net/Articles/330531/ > >

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-18 Thread Andrea Righi
On Fri, Jan 18, 2019 at 06:07:45PM +0100, Paolo Valente wrote: > > > > Il giorno 18 gen 2019, alle ore 17:35, Josef Bacik > > ha scritto: > > > > On Fri, Jan 18, 2019 at 11:31:24AM +0100, Andrea Righi wrote: > >> This is a redesign of my old cgroup-io-throttle controller: > >> https://lwn.net/

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-18 Thread Andrea Righi
On Fri, Jan 18, 2019 at 11:35:31AM -0500, Josef Bacik wrote: > On Fri, Jan 18, 2019 at 11:31:24AM +0100, Andrea Righi wrote: > > This is a redesign of my old cgroup-io-throttle controller: > > https://lwn.net/Articles/330531/ > > > > I'm resuming this old patch to point out a problem that I think

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-18 Thread Josef Bacik
On Fri, Jan 18, 2019 at 06:07:45PM +0100, Paolo Valente wrote: > > > > Il giorno 18 gen 2019, alle ore 17:35, Josef Bacik > > ha scritto: > > > > On Fri, Jan 18, 2019 at 11:31:24AM +0100, Andrea Righi wrote: > >> This is a redesign of my old cgroup-io-throttle controller: > >> https://lwn.net/

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-18 Thread Paolo Valente
> Il giorno 18 gen 2019, alle ore 17:35, Josef Bacik ha > scritto: > > On Fri, Jan 18, 2019 at 11:31:24AM +0100, Andrea Righi wrote: >> This is a redesign of my old cgroup-io-throttle controller: >> https://lwn.net/Articles/330531/ >> >> I'm resuming this old patch to point out a problem tha

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-18 Thread Josef Bacik
On Fri, Jan 18, 2019 at 11:31:24AM +0100, Andrea Righi wrote: > This is a redesign of my old cgroup-io-throttle controller: > https://lwn.net/Articles/330531/ > > I'm resuming this old patch to point out a problem that I think is still > not solved completely. > > = Problem = > > The io.max cont

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-18 Thread Paolo Valente
> Il giorno 18 gen 2019, alle ore 12:10, Andrea Righi > ha scritto: > > On Fri, Jan 18, 2019 at 12:04:17PM +0100, Paolo Valente wrote: >> >> >>> Il giorno 18 gen 2019, alle ore 11:31, Andrea Righi >>> ha scritto: >>> >>> This is a redesign of my old cgroup-io-throttle controller: >>> htt

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-18 Thread Andrea Righi
On Fri, Jan 18, 2019 at 12:04:17PM +0100, Paolo Valente wrote: > > > > Il giorno 18 gen 2019, alle ore 11:31, Andrea Righi > > ha scritto: > > > > This is a redesign of my old cgroup-io-throttle controller: > > https://lwn.net/Articles/330531/ > > > > I'm resuming this old patch to point out

Re: [RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-18 Thread Paolo Valente
> Il giorno 18 gen 2019, alle ore 11:31, Andrea Righi > ha scritto: > > This is a redesign of my old cgroup-io-throttle controller: > https://lwn.net/Articles/330531/ > > I'm resuming this old patch to point out a problem that I think is still > not solved completely. > > = Problem = > > T

[RFC PATCH 0/3] cgroup: fsio throttle controller

2019-01-18 Thread Andrea Righi
This is a redesign of my old cgroup-io-throttle controller: https://lwn.net/Articles/330531/ I'm resuming this old patch to point out a problem that I think is still not solved completely. = Problem = The io.max controller works really well at limiting synchronous I/O (READs), but a lot of I/O r