Re: [lfs-dev] kvm performance

2013-09-24 Thread Pierre Labastie
Le 24/09/2013 09:05, Pierre Labastie a écrit : > Le 23/09/2013 23:30, Bruce Dubbs a écrit : >> Pierre Labastie wrote: >>> Le 23/09/2013 18:10, Bruce Dubbs a écrit : >>> On the pdf of the above, it measured KVM I/O at about 60% of the host. See pages 56-58. That seems to be consistent wit

Re: [lfs-dev] kvm performance

2013-09-24 Thread Pierre Labastie
Le 23/09/2013 23:30, Bruce Dubbs a écrit : > Pierre Labastie wrote: >> Le 23/09/2013 18:10, Bruce Dubbs a écrit : >> >>> On the pdf of the above, it measured KVM I/O at about 60% of the host. >>> See pages 56-58. That seems to be consistent with my results. >>> >>> >> It is really amazing, because

Re: [lfs-dev] kvm performance

2013-09-23 Thread Stuart Stegall
I ran binutils only with -smp 1 and I get a like 180% runtime. I suspect it's some sort of threading management issue in KVM Go n-éirí leat, Stuart On Mon, Sep 23, 2013 at 4:30 PM, Bruce Dubbs wrote: > Pierre Labastie wrote: > > Le 23/09/2013 18:10, Bruce Dubbs a écrit : > > > >> On the pdf o

Re: [lfs-dev] kvm performance

2013-09-23 Thread Bruce Dubbs
Bruce Dubbs wrote: > Pierre Labastie wrote: >> Le 23/09/2013 18:10, Bruce Dubbs a écrit : >> >>> On the pdf of the above, it measured KVM I/O at about 60% of the host. >>> See pages 56-58. That seems to be consistent with my results. >>> >>> >> It is really amazing, because for the SBU benchmark,

Re: [lfs-dev] kvm performance

2013-09-23 Thread Bruce Dubbs
Pierre Labastie wrote: > Le 23/09/2013 18:10, Bruce Dubbs a écrit : > >> On the pdf of the above, it measured KVM I/O at about 60% of the host. >> See pages 56-58. That seems to be consistent with my results. >> >> > It is really amazing, because for the SBU benchmark, I consistently get not > mo

Re: [lfs-dev] kvm performance

2013-09-23 Thread Pierre Labastie
Le 23/09/2013 18:10, Bruce Dubbs a écrit : > On the pdf of the above, it measured KVM I/O at about 60% of the host. > See pages 56-58. That seems to be consistent with my results. > > It is really amazing, because for the SBU benchmark, I consistently get not more than a 10 % increase of the

Re: [lfs-dev] kvm performance

2013-09-23 Thread Bruce Dubbs
Stuart Stegall wrote: > I use virtio with the cache set to none on KVM. I get 57s on Host (16 > threads, 64GB RAM, single SSD storage, using -j4) and 69s in a VM (4 > threads, 8GB RAM, virtio is on the same SSD formated ext2, using -j4). Not > sure if these metrics are helpful for anyone or not,

Re: [lfs-dev] kvm performance

2013-09-23 Thread Bruce Dubbs
Pierre Labastie wrote: > 170 s on host (running Debian) and 182s on a VM under qemu > (running (B)LFS) > > I do not use the virtio interface, but I have > -drive file=/mnt/virtualMachines/qemu/blfs.qcow2,cache=writeback > > I do not remember now how I chose the 'cache' part. > But I think it is wo

Re: [lfs-dev] kvm performance

2013-09-23 Thread Stuart Stegall
I use virtio with the cache set to none on KVM. I get 57s on Host (16 threads, 64GB RAM, single SSD storage, using -j4) and 69s in a VM (4 threads, 8GB RAM, virtio is on the same SSD formated ext2, using -j4). Not sure if these metrics are helpful for anyone or not, but there you go. Go n-éirí l

Re: [lfs-dev] kvm performance

2013-09-23 Thread Fernando de Oliveira
Em 23-09-2013 00:45, Bruce Dubbs escreveu: > Walter P. Little wrote: >> I finished an LFS 7.4 install in VMware recently (Ubuntu 12.04 LTS host) >> and was not disappointed with the performance... Binutils clocked in at >> roughly 75 seconds if I recall correctly. However, I'm not in a position >>

Re: [lfs-dev] kvm performance

2013-09-23 Thread Pierre Labastie
Le 23/09/2013 03:48, Bruce Dubbs a écrit : > For the last couple of days I've been playing around with qemu/kvm. > I've built LFS on it from a Fedora 19 host and I'm disappointed with the > VM performance. > > On my host system, LFS-7.4, I can build binutils with a SBU benchmark of > 129 seconds.

Re: [lfs-dev] kvm performance

2013-09-22 Thread Bruce Dubbs
Walter P. Little wrote: > I finished an LFS 7.4 install in VMware recently (Ubuntu 12.04 LTS host) > and was not disappointed with the performance... Binutils clocked in at > roughly 75 seconds if I recall correctly. However, I'm not in a position > to build LFS on this host system directly, so I

Re: [lfs-dev] kvm performance

2013-09-22 Thread Walter P. Little
I finished an LFS 7.4 install in VMware recently (Ubuntu 12.04 LTS host) and was not disappointed with the performance... Binutils clocked in at roughly 75 seconds if I recall correctly. However, I'm not in a position to build LFS on this host system directly, so I have no basis for comparison. T

[lfs-dev] kvm performance

2013-09-22 Thread Bruce Dubbs
For the last couple of days I've been playing around with qemu/kvm. I've built LFS on it from a Fedora 19 host and I'm disappointed with the VM performance. On my host system, LFS-7.4, I can build binutils with a SBU benchmark of 129 seconds. Using that same LFS-7.4 system, I run qemu. I sett