Date: Fri, 09 Apr 2021 08:26:29 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 254333] [tcp] sysctl net.inet.tcp.hostcache.list hangs Message-ID: <bug-254333-7501-tXRZI7FtmA@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-254333-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-254333-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254333 --- Comment #26 from Maxim Shalomikhin <maxim.shalomikhin@kaspersky.com> --- We have one more machine with hanging sysctl. # sysctl net.inet.tcp.hostcache net.inet.tcp.hostcache.purgenow: 0 net.inet.tcp.hostcache.purge: 0 net.inet.tcp.hostcache.prune: 300 net.inet.tcp.hostcache.expire: 3600 net.inet.tcp.hostcache.count: 4294961495 net.inet.tcp.hostcache.bucketlimit: 30 net.inet.tcp.hostcache.hashsize: 65536 net.inet.tcp.hostcache.cachelimit: 1966080 net.inet.tcp.hostcache.enable: 1 # netstat -sptcp ... 195494221 hostcache entries added 88163 bucket overflow ... loader.conf: accf_data_load=3D"YES" accf_dns_load=3D"YES"=20 accf_http_load=3D"YES" net.inet.tcp.tcbhashsize=3D131072 net.inet.tcp.syncache.hashsize=3D65536 net.inet.tcp.syncache.cachelimit=3D1966080 net.inet.tcp.hostcache.hashsize=3D65536 net.inet.tcp.hostcache.cachelimit=3D1966080 sysctl.conf: net.inet.icmp.drop_redirect=3D1 net.inet.icmp.icmplim=3D2000 net.inet.icmp.icmplim_output=3D1 net.inet.ip.fw.dyn_buckets=3D2048 net.inet.ip.fw.dyn_max=3D100000 net.inet.tcp.blackhole=3D2 net.inet.tcp.drop_synfin=3D1 net.inet.tcp.fast_finwait2_recycle=3D1 net.inet.tcp.msl=3D10000 net.inet.udp.blackhole=3D1 The issue reproduces every 3-4 months on each of 60 servers in different locations. All servers are Dell/IBM with different hw specs but all with ECC RAM, so I don't think this is HW issue. Please let me know any other information I can collect. --=20 You are receiving this mail because: You are on the CC list for the bug.=
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