Re: loop block-mq conversion scalability issues

2015-04-27 Thread Justin M. Forbes
On Sun, 2015-04-26 at 23:27 +0800, Ming Lei wrote: > Hi Justin, > > On Fri, 24 Apr 2015 16:46:02 -0500 > "Justin M. Forbes" wrote: > > > On Fri, 2015-04-24 at 10:59 +0800, Ming Lei wrote: > > > Hi Justin, > > > > > > Thanks for the report. > > > > > > On Thu, 23 Apr 2015 16:04:10 -0500 > > >

Re: loop block-mq conversion scalability issues

2015-04-27 Thread Justin M. Forbes
On Sun, 2015-04-26 at 23:27 +0800, Ming Lei wrote: Hi Justin, On Fri, 24 Apr 2015 16:46:02 -0500 Justin M. Forbes jfor...@fedoraproject.org wrote: On Fri, 2015-04-24 at 10:59 +0800, Ming Lei wrote: Hi Justin, Thanks for the report. On Thu, 23 Apr 2015 16:04:10 -0500

Re: loop block-mq conversion scalability issues

2015-04-26 Thread Ming Lei
Hi Justin, On Fri, 24 Apr 2015 16:46:02 -0500 "Justin M. Forbes" wrote: > On Fri, 2015-04-24 at 10:59 +0800, Ming Lei wrote: > > Hi Justin, > > > > Thanks for the report. > > > > On Thu, 23 Apr 2015 16:04:10 -0500 > > "Justin M. Forbes" wrote: > > > > > The block-mq conversion for loop in

Re: loop block-mq conversion scalability issues

2015-04-26 Thread Ming Lei
Hi Justin, On Fri, 24 Apr 2015 16:46:02 -0500 Justin M. Forbes jfor...@fedoraproject.org wrote: On Fri, 2015-04-24 at 10:59 +0800, Ming Lei wrote: Hi Justin, Thanks for the report. On Thu, 23 Apr 2015 16:04:10 -0500 Justin M. Forbes jfor...@redhat.com wrote: The block-mq

Re: loop block-mq conversion scalability issues

2015-04-25 Thread Ming Lei
On Sat, Apr 25, 2015 at 5:46 AM, Justin M. Forbes wrote: > On Fri, 2015-04-24 at 10:59 +0800, Ming Lei wrote: >> Hi Justin, >> >> Thanks for the report. >> >> On Thu, 23 Apr 2015 16:04:10 -0500 >> "Justin M. Forbes" wrote: >> >> > The block-mq conversion for loop in 4.0 kernels is showing us an

Re: loop block-mq conversion scalability issues

2015-04-25 Thread Ming Lei
On Sat, Apr 25, 2015 at 5:46 AM, Justin M. Forbes jfor...@fedoraproject.org wrote: On Fri, 2015-04-24 at 10:59 +0800, Ming Lei wrote: Hi Justin, Thanks for the report. On Thu, 23 Apr 2015 16:04:10 -0500 Justin M. Forbes jfor...@redhat.com wrote: The block-mq conversion for loop in 4.0

Re: loop block-mq conversion scalability issues

2015-04-24 Thread Justin M. Forbes
On Fri, 2015-04-24 at 10:59 +0800, Ming Lei wrote: > Hi Justin, > > Thanks for the report. > > On Thu, 23 Apr 2015 16:04:10 -0500 > "Justin M. Forbes" wrote: > > > The block-mq conversion for loop in 4.0 kernels is showing us an > > interesting scalability problem with live CDs (ro, squashfs).

Re: loop block-mq conversion scalability issues

2015-04-24 Thread Justin M. Forbes
On Fri, 2015-04-24 at 10:59 +0800, Ming Lei wrote: Hi Justin, Thanks for the report. On Thu, 23 Apr 2015 16:04:10 -0500 Justin M. Forbes jfor...@redhat.com wrote: The block-mq conversion for loop in 4.0 kernels is showing us an interesting scalability problem with live CDs (ro,

Re: loop block-mq conversion scalability issues

2015-04-23 Thread Ming Lei
Hi Justin, Thanks for the report. On Thu, 23 Apr 2015 16:04:10 -0500 "Justin M. Forbes" wrote: > The block-mq conversion for loop in 4.0 kernels is showing us an > interesting scalability problem with live CDs (ro, squashfs). It was > noticed when testing the Fedora beta that the more CPUs a

loop block-mq conversion scalability issues

2015-04-23 Thread Justin M. Forbes
The block-mq conversion for loop in 4.0 kernels is showing us an interesting scalability problem with live CDs (ro, squashfs). It was noticed when testing the Fedora beta that the more CPUs a liveCD image was given, the slower it would boot. A 4 core qemu instance or bare metal instance took more

loop block-mq conversion scalability issues

2015-04-23 Thread Justin M. Forbes
The block-mq conversion for loop in 4.0 kernels is showing us an interesting scalability problem with live CDs (ro, squashfs). It was noticed when testing the Fedora beta that the more CPUs a liveCD image was given, the slower it would boot. A 4 core qemu instance or bare metal instance took more

Re: loop block-mq conversion scalability issues

2015-04-23 Thread Ming Lei
Hi Justin, Thanks for the report. On Thu, 23 Apr 2015 16:04:10 -0500 Justin M. Forbes jfor...@redhat.com wrote: The block-mq conversion for loop in 4.0 kernels is showing us an interesting scalability problem with live CDs (ro, squashfs). It was noticed when testing the Fedora beta that the