Re: [Qemu-devel] slow xbzrle

2012-10-25 Thread Stefan Priebe
Am 25.10.2012 15:15, schrieb Orit Wasserman: Looks like a lot of cache miss, you can try increasing the cache size (migrate_set_cache_size). But you should remember that for an idle guest XBZRLE is wasteful, it is useful for workload that changes the same memory pages frequently. sure here are

Re: [Qemu-devel] slow xbzrle

2012-10-25 Thread Orit Wasserman
On 10/25/2012 02:18 PM, Stefan Priebe - Profihost AG wrote: > Am 25.10.2012 13:39, schrieb Orit Wasserman: >> On 10/25/2012 12:35 PM, Stefan Priebe - Profihost AG wrote: >>> Am 25.10.2012 11:44, schrieb Orit Wasserman: > Is this known or is something wrong? My guess this workload migrates

Re: [Qemu-devel] slow xbzrle

2012-10-25 Thread Stefan Priebe - Profihost AG
Am 25.10.2012 13:39, schrieb Orit Wasserman: On 10/25/2012 12:35 PM, Stefan Priebe - Profihost AG wrote: Am 25.10.2012 11:44, schrieb Orit Wasserman: Is this known or is something wrong? My guess this workload migrates fine without XBZRLE so it is not the speed or downtime :). it could be tha

Re: [Qemu-devel] slow xbzrle

2012-10-25 Thread Orit Wasserman
On 10/25/2012 12:35 PM, Stefan Priebe - Profihost AG wrote: > Am 25.10.2012 11:44, schrieb Orit Wasserman: >>> Is this known or is something wrong? >> My guess this workload migrates fine without XBZRLE so it is not the speed >> or downtime :). >> it could be that the cache size is too small resul

Re: [Qemu-devel] slow xbzrle

2012-10-25 Thread Stefan Priebe - Profihost AG
Am 25.10.2012 11:44, schrieb Orit Wasserman: Is this known or is something wrong? My guess this workload migrates fine without XBZRLE so it is not the speed or downtime :). it could be that the cache size is too small resulting with a lot of cache misses which means XBZRLE makes things worse a

Re: [Qemu-devel] slow xbzrle

2012-10-25 Thread Orit Wasserman
On 10/25/2012 10:12 AM, Stefan Priebe - Profihost AG wrote: > Hello list, > > i'm using 1.2 stable and wanted to use xbzrle but xbzrle is extremely slow. > > While trying to transfer a simple VM with 4GB memory through a 10GBe nic > while running a MySQL (with NO LOAD) it takes up to 10 - 15 min

[Qemu-devel] slow xbzrle

2012-10-25 Thread Stefan Priebe - Profihost AG
Hello list, i'm using 1.2 stable and wanted to use xbzrle but xbzrle is extremely slow. While trying to transfer a simple VM with 4GB memory through a 10GBe nic while running a MySQL (with NO LOAD) it takes up to 10 - 15 minutes. Remaining is often jumping or just lowering pretty slow. Is th