tcp ethernet RX overrun
From: Vamshi Damidi <dbaprimatics_at_gmail.com>
Date: Tue, 22 May 2012 14:21:20 -0400
Message-ID: <CAKshVhw-tKC79vd3KM+2zas1_XpMxcHSTcPcuHpLju6Qzmx3hw_at_mail.gmail.com>
To all network masters:
Can you please throw some light on how to debug ethernet errors and overruns.
below is network interface.
# the default is 131072
node.conn[0].iscsi.MaxRecvDataSegmentLength = 16776192
# the default is 32768
discovery.sendtargets.iscsi.MaxRecvDataSegmentLength = 16776192 node.conn[0].iscsi.HeaderDigest = None
node.session.iscsi.FastAbort = No
Date: Tue, 22 May 2012 14:21:20 -0400
Message-ID: <CAKshVhw-tKC79vd3KM+2zas1_XpMxcHSTcPcuHpLju6Qzmx3hw_at_mail.gmail.com>
To all network masters:
Can you please throw some light on how to debug ethernet errors and overruns.
below is network interface.
eth4 Link encap:Ethernet HWaddr 00:10:18:98:D7:18 inet6 addr: fe80::210:18ff:fe98:d718/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:91675115854 errors:3057985 dropped:0 overruns:3057245 frame:740 TX packets:20876846657 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:118442063462040 (107.7 TiB) TX bytes:21442788961564 (19.5 TiB) Interrupt:40 Memory:dc800000-dcffffff
We are using 10G broadcom dual nics with tcp buffersize #SCSI TCP buffer fix
net.core.rmem_max = 1073741824 net.core.wmem_max = 1073741824 net.ipv4.tcp_rmem = 1048576 16777216 1073741824 net.ipv4.tcp_wmem = 1048576 16770216 1073741824 net.ipv4.tcp_mem = 1048576 16770216 1073741824
and iscsi config as below.
node.startup = automatic node.session.timeo.replacement_timeout = 120 node.conn[0].timeo.login_timeout = 15 node.conn[0].timeo.logout_timeout = 15 node.conn[0].timeo.noop_out_interval = 10 node.conn[0].timeo.noop_out_timeout = 15 node.session.initial_login_retry_max = 4 node.session.cmds_max = 128 node.session.queue_depth = 128 node.session.iscsi.InitialR2T = No node.session.iscsi.ImmediateData = Yes node.session.iscsi.FirstBurstLength = 16776192 node.session.iscsi.MaxBurstLength = 16776192
# the default is 131072
node.conn[0].iscsi.MaxRecvDataSegmentLength = 16776192
# the default is 32768
discovery.sendtargets.iscsi.MaxRecvDataSegmentLength = 16776192 node.conn[0].iscsi.HeaderDigest = None
node.session.iscsi.FastAbort = No
Thanks,
Vamshi .D
-- http://www.freelists.org/webpage/oracle-lReceived on Tue May 22 2012 - 13:21:20 CDT