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...ch. 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> Gave it a quick try on s390/kvm. As expected it makes no difference for big streaming workload like iperf. uperf with a 1-1 round robin got indeed faster by about 30%. The high CPU consumption is something that bothers me though, as virtualized systems tend to be full. > +static int poll_start_rate = 0; > +module_param(poll_start_rate, int, S_IRUGO|S_IWUSR); > +MODULE_PARM_DESC(poll_start_rate, &qu...

if someone has met this error report , this is on <font size="-1">Hyper-<em>V&nbsp; virthost is debian 6.0 <br><br><br>when run stress on virthoast&nbsp; use uperf <br><br><br></em></font><pre wrap="">root@SDZX:~# dmesg batch:31 [ 0.000000] ACPI: PM-Timer IO Port: 0x408 [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled) [ 0.000000] ACPI: LAPIC (acpi_id[0x...

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" it. This kick involves a PIO in the guest, and therefore an exit (and possibly

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" it. This kick involves a PIO in the guest, and therefore an exit (and possibly

In crossbow, each mac_srs has a kernel thread called "mac_rx_srs_poll_ring" to poll the hardware and crossbow will wakeup this thread to poll packets from the hardware automatically. Does crossbow provide any method to disable the polling mechanism, for example disabling the this kernel thread? Thanks Zhihui -------------- next part -------------- An HTML attachment was scrubbed... URL:

To improve the performance of scripts that manipulate zfs snapshots and the zfs snapshot service in perticular there needs to be a way to list all the snapshots for a given object and only the snapshots for that object. There are two RFEs filed that cover this: http://bugs.opensolaris.org/view_bug.do?bug_id=6352014 : ''zfs list'' should have an option to only present direct