search for: ladelsky

Displaying 19 results from an estimated 19 matches for "ladelsky".

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2014 Aug 21
2
[PATCH] vhost: Add polling mode
...B/sec -> 5545 MB/sec). > > > > filebench, 1 vm: > > ops/sec improved by 13% with the polling patch. Number of exits > was reduced by > > 31%. > > The same experiment with 3 vms running filebench showed similar numbers. > > > > Signed-off-by: Razya Ladelsky <razya at il.ibm.com> > > This really needs more thourough benchmarking report, including > system data. One good example for a related patch: > http://lwn.net/Articles/551179/ > though for virtualization, we need data about host as well, and if you > want to look at strea...
2014 Aug 21
2
[PATCH] vhost: Add polling mode
...B/sec -> 5545 MB/sec). > > > > filebench, 1 vm: > > ops/sec improved by 13% with the polling patch. Number of exits > was reduced by > > 31%. > > The same experiment with 3 vms running filebench showed similar numbers. > > > > Signed-off-by: Razya Ladelsky <razya at il.ibm.com> > > This really needs more thourough benchmarking report, including > system data. One good example for a related patch: > http://lwn.net/Articles/551179/ > though for virtualization, we need data about host as well, and if you > want to look at strea...
2014 Aug 11
2
[PATCH] vhost: Add polling mode
From: "Michael S. Tsirkin" <mst at redhat.com> Date: Sun, 10 Aug 2014 21:45:59 +0200 > On Sun, Aug 10, 2014 at 11:30:35AM +0300, Razya Ladelsky wrote: ... > And, did your tests actually produce 100% load on both host CPUs? ... Michael, please do not quote an entire patch just to ask a one line question. I truly, truly, wish it was simpler in modern email clients to delete the unrelated quoted material because I bet when people do th...
2014 Aug 11
2
[PATCH] vhost: Add polling mode
From: "Michael S. Tsirkin" <mst at redhat.com> Date: Sun, 10 Aug 2014 21:45:59 +0200 > On Sun, Aug 10, 2014 at 11:30:35AM +0300, Razya Ladelsky wrote: ... > And, did your tests actually produce 100% load on both host CPUs? ... Michael, please do not quote an entire patch just to ask a one line question. I truly, truly, wish it was simpler in modern email clients to delete the unrelated quoted material because I bet when people do th...
2014 Aug 12
2
[PATCH] vhost: Add polling mode
"Michael S. Tsirkin" <mst at redhat.com> wrote on 12/08/2014 12:18:50 PM: > From: "Michael S. Tsirkin" <mst at redhat.com> > To: David Miller <davem at davemloft.net> > Cc: Razya Ladelsky/Haifa/IBM at IBMIL, kvm at vger.kernel.org, Alex > Glikson/Haifa/IBM at IBMIL, Eran Raichstein/Haifa/IBM at IBMIL, Yossi > Kuperman1/Haifa/IBM at IBMIL, Joel Nider/Haifa/IBM at IBMIL, > abel.gordon at gmail.com, linux-kernel at vger.kernel.org, > netdev at vger.kernel.org, virtualiz...
2014 Aug 12
2
[PATCH] vhost: Add polling mode
"Michael S. Tsirkin" <mst at redhat.com> wrote on 12/08/2014 12:18:50 PM: > From: "Michael S. Tsirkin" <mst at redhat.com> > To: David Miller <davem at davemloft.net> > Cc: Razya Ladelsky/Haifa/IBM at IBMIL, kvm at vger.kernel.org, Alex > Glikson/Haifa/IBM at IBMIL, Eran Raichstein/Haifa/IBM at IBMIL, Yossi > Kuperman1/Haifa/IBM at IBMIL, Joel Nider/Haifa/IBM at IBMIL, > abel.gordon at gmail.com, linux-kernel at vger.kernel.org, > netdev at vger.kernel.org, virtualiz...
2014 Aug 13
0
[PATCH] vhost: Add polling mode
On Tue, Aug 12, 2014 at 01:57:05PM +0300, Razya Ladelsky wrote: > "Michael S. Tsirkin" <mst at redhat.com> wrote on 12/08/2014 12:18:50 PM: > > > From: "Michael S. Tsirkin" <mst at redhat.com> > > To: David Miller <davem at davemloft.net> > > Cc: Razya Ladelsky/Haifa/IBM at IBMIL, kvm at vger...
2014 Aug 20
0
[PATCH] vhost: Add polling mode
On 10/08/14 10:30, Razya Ladelsky wrote: > From: Razya Ladelsky <razya at il.ibm.com> > Date: Thu, 31 Jul 2014 09:47:20 +0300 > Subject: [PATCH] vhost: Add polling mode > > When vhost is waiting for buffers from the guest driver (e.g., more packets to > send in vhost-net's transmit queue), it normally g...
2014 Aug 21
0
[PATCH] vhost: Add polling mode
From: Razya Ladelsky > "Michael S. Tsirkin" <mst at redhat.com> wrote on 20/08/2014 01:57:10 PM: > > > > Results: > > > > > > Netperf, 1 vm: > > > The polling patch improved throughput by ~33% (1516 MB/sec -> 2046 MB/sec). > > > Number of exits/sec...
2014 Aug 10
7
[PATCH] vhost: Add polling mode
From: Razya Ladelsky <razya at il.ibm.com> Date: Thu, 31 Jul 2014 09:47:20 +0300 Subject: [PATCH] vhost: Add polling mode When vhost is waiting for buffers from the guest driver (e.g., more packets to send in vhost-net's transmit queue), it normally goes to sleep and waits for the guest to "kick" i...
2014 Aug 10
7
[PATCH] vhost: Add polling mode
From: Razya Ladelsky <razya at il.ibm.com> Date: Thu, 31 Jul 2014 09:47:20 +0300 Subject: [PATCH] vhost: Add polling mode When vhost is waiting for buffers from the guest driver (e.g., more packets to send in vhost-net's transmit queue), it normally goes to sleep and waits for the guest to "kick" i...
2014 Aug 10
0
[PATCH] vhost: Add polling mode
On Sun, Aug 10, 2014 at 11:30:35AM +0300, Razya Ladelsky wrote: > From: Razya Ladelsky <razya at il.ibm.com> > Date: Thu, 31 Jul 2014 09:47:20 +0300 > Subject: [PATCH] vhost: Add polling mode > > When vhost is waiting for buffers from the guest driver (e.g., more packets to > send in vhost-net's transmit queue), it normally g...
2014 Aug 20
0
[PATCH] vhost: Add polling mode
On Sun, Aug 10, 2014 at 11:30:35AM +0300, Razya Ladelsky wrote: > From: Razya Ladelsky <razya at il.ibm.com> > Date: Thu, 31 Jul 2014 09:47:20 +0300 > Subject: [PATCH] vhost: Add polling mode > > When vhost is waiting for buffers from the guest driver (e.g., more packets to > send in vhost-net's transmit queue), it normally g...
2014 Aug 12
0
[PATCH] vhost: Add polling mode
On Mon, Aug 11, 2014 at 12:46:21PM -0700, David Miller wrote: > From: "Michael S. Tsirkin" <mst at redhat.com> > Date: Sun, 10 Aug 2014 21:45:59 +0200 > > > On Sun, Aug 10, 2014 at 11:30:35AM +0300, Razya Ladelsky wrote: > ... > > And, did your tests actually produce 100% load on both host CPUs? > ... > > Michael, please do not quote an entire patch just to ask a one line > question. > > I truly, truly, wish it was simpler in modern email clients to delete > the unrelated qu...
2014 Aug 17
0
[PATCH] vhost: Add polling mode
On Sun, Aug 17, 2014 at 03:35:39PM +0300, Razya Ladelsky wrote: > > > > > > Hi Michael, > > > > > > Sorry for the delay, had some problems with my mailbox, and I realized > > > > just now that > > > my reply wasn't sent. > > > The vm indeed ALWAYS utilized 100% cpu, whether pollin...
2014 Aug 19
1
[PATCH] vhost: Add polling mode
> That was just one example. There many other possibilities. Either > actually make the systems load all host CPUs equally, or divide > throughput by host CPU. > The polling patch adds this capability to vhost, reducing costly exit overhead when the vm is loaded. In order to load the vm I ran netperf with msg size of 256: Without polling: 2480 Mbits/sec, utilization: vm - 100%
2014 Aug 19
1
[PATCH] vhost: Add polling mode
> That was just one example. There many other possibilities. Either > actually make the systems load all host CPUs equally, or divide > throughput by host CPU. > The polling patch adds this capability to vhost, reducing costly exit overhead when the vm is loaded. In order to load the vm I ran netperf with msg size of 256: Without polling: 2480 Mbits/sec, utilization: vm - 100%
2014 Aug 17
2
[PATCH] vhost: Add polling mode
> > > > Hi Michael, > > > > Sorry for the delay, had some problems with my mailbox, and I realized > > just now that > > my reply wasn't sent. > > The vm indeed ALWAYS utilized 100% cpu, whether polling was enabled or > > not. > > The vhost thread utilized less than 100% (of the other cpu) when polling > > was disabled. >
2014 Aug 17
2
[PATCH] vhost: Add polling mode
> > > > Hi Michael, > > > > Sorry for the delay, had some problems with my mailbox, and I realized > > just now that > > my reply wasn't sent. > > The vm indeed ALWAYS utilized 100% cpu, whether polling was enabled or > > not. > > The vhost thread utilized less than 100% (of the other cpu) when polling > > was disabled. >