Re: rbd_cache, limiting read on high iops around 40k

, ceph-users ceph-us...@lists.ceph.com Envoyé: Vendredi 12 Juin 2015 08:58:21 Objet: Re: rbd_cache, limiting read on high iops around 40k Thanks, posted the question in openstack list. Hopefully will get some expert opinion. On Fri, Jun 12, 2015 at 11:33 AM, Alexandre DERUMIER aderum

Re: rbd_cache, limiting read on high iops around 40k

Roy somnath@sandisk.com, Irek Fasikhov malm...@gmail.com, ceph-devel ceph-devel@vger.kernel.org, ceph-users ceph-us...@lists.ceph.com Envoyé: Lundi 22 Juin 2015 07:58:47 Objet: Re: rbd_cache, limiting read on high iops around 40k Just an update, there seems to be no proper way to pass

Re: rbd_cache, limiting read on high iops around 40k

-devel ceph-devel@vger.kernel.org, ceph-users ceph-us...@lists.ceph.com Envoyé: Lundi 22 Juin 2015 11:04:42 Objet: Re: rbd_cache, limiting read on high iops around 40k | Proxmox 4.0 will allow to enable|disable 1 iothread by disk. Alexandre, Useful option! In proxmox 3.4 will it be possible to add

Re: rbd_cache, limiting read on high iops around 40k

@vger.kernel.org, ceph-users ceph-us...@lists.ceph.com Envoyé: Lundi 22 Juin 2015 09:22:13 Objet: Re: rbd_cache, limiting read on high iops around 40k It is already possible to do in proxmox 3.4 (with the latest updates qemu-kvm 2.2.x). But it is necessary to register in the conf file iothread:1. For single

Re: rbd_cache, limiting read on high iops around 40k

:58:21 Objet: Re: rbd_cache, limiting read on high iops around 40k Thanks, posted the question in openstack list. Hopefully will get some expert opinion. On Fri, Jun 12, 2015 at 11:33 AM, Alexandre DERUMIER aderum...@odiso.com wrote: Hi, here a libvirt xml sample from libvirt src (you need

Re: rbd_cache, limiting read on high iops around 40k

À: aderumier aderum...@odiso.com Cc: Somnath Roy somnath@sandisk.com, Irek Fasikhov malm...@gmail.com, ceph-devel ceph-devel@vger.kernel.org, ceph-users ceph-us...@lists.ceph.com Envoyé: Vendredi 12 Juin 2015 07:52:41 Objet: Re: rbd_cache, limiting read on high iops around 40k

Re: rbd_cache, limiting read on high iops around 40k

Objet: Re: rbd_cache, limiting read on high iops around 40k Hi Alexandre, I agree with your rational, of one iothread per disk. CPU consumed in IOwait is pretty high in each VM. But I am not finding a way to set the same on a nova instance. I am using openstack Juno with QEMU+KVM. As per libvirt

Re: rbd_cache, limiting read on high iops around 40k

@vger.kernel.org, ceph-users ceph-us...@lists.ceph.com Envoyé: Vendredi 12 Juin 2015 07:52:41 Objet: Re: rbd_cache, limiting read on high iops around 40k Hi Alexandre, I agree with your rational, of one iothread per disk. CPU consumed in IOwait is pretty high in each VM. But I am not finding a way to set

Re: rbd_cache, limiting read on high iops around 40k

...@odiso.com, Irek Fasikhov malm...@gmail.com Cc: ceph-devel ceph-devel@vger.kernel.org, pushpesh sharma pushpesh@gmail.com, ceph-users ceph-us...@lists.ceph.com Envoyé: Mercredi 10 Juin 2015 09:06:32 Objet: RE: rbd_cache, limiting read on high iops around 40k Hi Alexandre, Thanks

Re: rbd_cache, limiting read on high iops around 40k

: aderumier aderum...@odiso.com, Irek Fasikhov malm...@gmail.com Cc: ceph-devel ceph-devel@vger.kernel.org, pushpesh sharma pushpesh@gmail.com, ceph-users ceph-us...@lists.ceph.com Envoyé: Mercredi 10 Juin 2015 09:06:32 Objet: RE: rbd_cache, limiting read on high iops around 40k Hi Alexandre

RE: rbd_cache, limiting read on high iops around 40k

- De: pushpesh sharma pushpesh@gmail.com À: aderumier aderum...@odiso.com Cc: ceph-devel ceph-devel@vger.kernel.org , ceph-users ceph-us...@lists.ceph.com Envoyé: Mardi 9 Juin 2015 09:21:04 Objet: Re: rbd_cache, limiting read on high iops around 40k Hi Alexandre, We have