From e3d91783eb0ba66ca3fc73175f6bb9ad47fc2dc3 Mon Sep 17 00:00:00 2001 From: Fiona Ebner Date: Fri, 17 Feb 2023 17:08:36 +0100 Subject: [PATCH] qm: emulated devices: make recommendation for virtio devices more visible Signed-off-by: Fiona Ebner --- qm.adoc | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/qm.adoc b/qm.adoc index c3865cb..bd535a2 100644 --- a/qm.adoc +++ b/qm.adoc @@ -79,11 +79,11 @@ paravirtualized virtio devices, which includes a paravirtualized generic disk controller, a paravirtualized network card, a paravirtualized serial port, a paravirtualized SCSI controller, etc ... -It is highly recommended to use the virtio devices whenever you can, as they -provide a big performance improvement and are generally better maintained. Using -the virtio generic disk controller versus an emulated IDE controller will double -the sequential write throughput, as measured with `bonnie++(8)`. Using the -virtio network interface can deliver up to three times the throughput of an +TIP: It is *highly recommended* to use the virtio devices whenever you can, as +they provide a big performance improvement and are generally better maintained. +Using the virtio generic disk controller versus an emulated IDE controller will +double the sequential write throughput, as measured with `bonnie++(8)`. Using +the virtio network interface can deliver up to three times the throughput of an emulated Intel E1000 network card, as measured with `iperf(1)`. footnote:[See this benchmark on the KVM wiki https://www.linux-kvm.org/page/Using_VirtIO_NIC]