Date: Tue, 04 Apr 2023 12:54:13 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 270636] Netmap leaks mbufs when receiving frames in generic mode on AMD Ryzen Message-ID: <bug-270636-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D270636 Bug ID: 270636 Summary: Netmap leaks mbufs when receiving frames in generic mode on AMD Ryzen Product: Base System Version: 13.1-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: koverskeid@gmail.com $uname -a FreeBSD freebsd 13.1-RELEASE FreeBSD 13.1-RELEASE releng/13.1-n250148-fc952ac2212 GENERIC amd64 $sysctl hw.model hw.machine hw.ncpu hw.model: AMD Ryzen Embedded V1202B with Radeon Vega Gfx hw.machine: amd64 hw.ncpu: 2 $pciconf -lv | grep -A1 -B3 network igb0@pci0:1:0:0: class=3D0x020000 rev=3D0x03 hdr=3D0x00 vendor=3D0x8= 086 device=3D0x1533 subvendor=3D0x8086 subdevice=3D0x1533 vendor =3D 'Intel Corporation' device =3D 'I210 Gigabit Network Connection' class =3D network subclass =3D ethernet $sysctl net.inet.tcp.functions_available net.inet.tcp.functions_available: Stack D Alias PCB count freebsd * freebsd 6 In netmap native mode after bombarding the machine with packets: $netstat -m 6145/2240/8385 mbufs in use (current/cache/total) 2048/2270/4318/438928 mbuf clusters in use (current/cache/total/max) 0/508 mbuf+clusters out of packet secondary zone in use (current/cache) 0/508/508/219464 4k (page size) jumbo clusters in use (current/cache/total/= max) 0/0/0/65026 9k jumbo clusters in use (current/cache/total/max) 0/0/0/36577 16k jumbo clusters in use (current/cache/total/max) 5632K/7132K/12764K bytes allocated to network (current/cache/total) 0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters) 0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters) 0/0/0 requests for jumbo clusters delayed (4k/9k/16k) 0/0/0 requests for jumbo clusters denied (4k/9k/16k) 0 sendfile syscalls 0 sendfile syscalls completed without I/O request 0 requests for I/O initiated by sendfile 0 pages read by sendfile as part of a request 0 pages were valid at time of a sendfile request 0 pages were valid and substituted to bogus page 0 pages were requested for read ahead by applications 0 pages were read ahead by sendfile 0 times sendfile encountered an already busy page 0 requests for sfbufs denied 0 requests for sfbufs delayed In generic mode: $sysctl dev.netmap.admode=3D2 ***bombarding the machine with frames***=20 $netstat -m 442160/1330/443490 mbufs in use (current/cache/total) 438080/848/438928/438928 mbuf clusters in use (current/cache/total/max) 0/508 mbuf+clusters out of packet secondary zone in use (current/cache) 0/508/508/219464 4k (page size) jumbo clusters in use (current/cache/total/= max) 0/0/0/65026 9k jumbo clusters in use (current/cache/total/max) 0/0/0/36577 16k jumbo clusters in use (current/cache/total/max) 986700K/4060K/990760K bytes allocated to network (current/cache/total) 0/264033/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters) 0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters) 0/0/0 requests for jumbo clusters delayed (4k/9k/16k) 0/0/0 requests for jumbo clusters denied (4k/9k/16k) 0 sendfile syscalls 0 sendfile syscalls completed without I/O request 0 requests for I/O initiated by sendfile 0 pages read by sendfile as part of a request 0 pages were valid at time of a sendfile request 0 pages were valid and substituted to bogus page 0 pages were requested for read ahead by applications 0 pages were read ahead by sendfile 0 times sendfile encountered an already busy page 0 requests for sfbufs denied 0 requests for sfbufs delayed $dmesg [zone: mbuf_cluster] kern.ipc.nmbclusters limit reached The number of mbuf clusters in use doesn't decrease even if I remove the network traffic or close the netmap port.=20 I am testing withouth sending any frames from the machine. I have reproduced the behavior on 13.2-STABLE and 14.0-CURRENT. I am running exactly the same testprogram on HW with Intel Atom processor a= nd the same NIC(I210) without a problem. --=20 You are receiving this mail because: You are the assignee for the bug.=
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