From: Ali Shirvani <alishirv@protonmail.com>
To: "bridge@lists.linux-foundation.org" <bridge@lists.linux-foundation.org>
Subject: [Bridge] Packet loss when ~400 virtual machine connected to a bridge
Date: Wed, 25 Jan 2023 17:58:53 +0000 [thread overview]
Message-ID: <QN_UgY3rBNWFL2DBKZbkL7M7cmBq9mW5TmbuPxERfKBw5TsF_2fMsywMm3GZyRW5t7vdj2qLwJVtMozgj_dLJSLxuvSnQ28tmsX8iEKwQJU=@protonmail.com> (raw)
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Hello everyone,
We have a physical server that hosts about 400 virtual machines. Each virtual machine has a TAP device connected to a Linux bridge. We tried to use Linux-KVM suggestions for QEMU networking according to this link https://www.linux-kvm.org/page/10G_NIC_performance:_VFIO_vs_virtio
Unfortunately, we have a packet loss when pinging virtual machines' IP addresses. Pining the physical server is ok, and there is no packet loss. Would you please guide me on how I should find the root cause of the packet loss? Also, it would be great if you share your experience of connecting ~400 VMs to a Linux bridge and if it requires any tuning for handling this number of VMs.
Best regards,
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reply other threads:[~2023-01-25 17:58 UTC|newest]
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