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Date: Fri, 18 Jul 2014 10:41:37 +0200 From: Eric Dumazet <eric.dumazet@...il.com> To: Denys Fedoryshchenko <nuclearcat@...learcat.com> Cc: netdev@...r.kernel.org, kaber@...sh.net, davem@...emloft.net Subject: Re: /proc/net/sockstat invalid memory accounting or memory leak in latest kernels? On Fri, 2014-07-18 at 11:12 +0300, Denys Fedoryshchenko wrote: > More updates. Now i found out how to see if tcp are under memory > pressure mode, i guess when it is active, speed might degrade. Now > almost all sockets are released, is it normal that tcp pressure still > "yes" ? > > balancer-backup ~ # cat /proc/net/protocols > protocol size sockets memory press maxhdr slab module cl co di ac > io in de sh ss gs se re sp bi br ha uh gp em > PACKET 1216 0 -1 NI 0 no kernel n n n n > n n n n n n n n n n n n n n n > ALG 624 0 0 NI 0 no kernel n n n n > n n n n n n n n n n n n n n n > UNIX 832 1 -1 NI 0 yes kernel n n n n > n n n n n n n n n n n n n n n > UDP-Lite 800 0 -1 NI 0 yes kernel y y y n > y y y n y y y y y n y y y y n > PING 760 0 -1 NI 0 yes kernel y y y n > n y n n y y y y n y y y y y n > RAW 768 0 -1 NI 0 yes kernel y y y n > y y y n y y y y n y y y y n n > UDP 800 1 0 NI 0 yes kernel y y y n > y n y n y y y y y n y y y y n > TCP 1608 24 1823119 yes 208 yes kernel y y y > y y y y y y y y y y n y y y y y > NETLINK 992 0 -1 NI 0 no kernel n n n n > n n n n n n n n n n n n n n n > balancer-backup ~ # cat /proc/net/sockstat > sockets: used 51 > TCP: inuse 21 orphan 13 tw 2 alloc 21 mem 1823120 > UDP: inuse 1 mem 0 > UDPLITE: inuse 0 > RAW: inuse 0 > FRAG: inuse 0 memory tcp believes its under pressure because of some bug on accounting. If you change /proc/sys/net/ipv4/tcp_mem (3rd value), it might say it is not under pressure. I am taking a look, thanks again for the report. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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