Date: Wed, 17 Feb 2021 12:08:39 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 235031] [em] em0: poor NFS performance, strange behavior Message-ID: <bug-235031-7501-V0SvIsK1mp@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-235031-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-235031-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235031 --- Comment #40 from Marko Cupać <marko.cupac@mimar.rs> --- Hi, I just got advice to try and disable LRO on em0 interface with base driver, and it resulted in acceptable performance in my VirtualBox VMs with bridged networking. I noticed different options between the two drivers: if_em: options=81249b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LRO,WOL_MAGIC,VLAN_HWFILTER> if_em_updated: options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO> The difference is that if_em_updated has TSO4 and not LRO, also VLAN_HWTSO and not VLAN_HWFILTER I am back to if_em_updated for now, but hopefully this information will be helpful in fixing if_em. Regards, -- You are receiving this mail because: You are the assignee for the bug.
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