Global Cache Blocks Lost
Hi everyone,
I'm received this warning day after day, I checked my Interconnect with netstat -i and netstat -s and I can not found any error.
I have a SUN Switch 4Gbit Interconnect.
Metric=Global Cache Blocks Lost
Timestamp=Nov 9, 2007 11:10:21 PM BRST
Severity=Warning
Message=Metrics "Global Cache Blocks Lost" is at 2
Any Idea ?
Thank you All ! Sorry my pool English. ;-)
System Settings
Machine and version Linux gdasrv01.dediniagro.com.br 2.6.9-42.ELlargesmp #1 SMP Wed Jul 12 23:46:39 EDT 2006 x86_64
Fully qualified host name gdasrv01.dediniagro.com.br
Platform 64-bit Red Hat Linux
O/S Version 2.6.9
8 x Intel(R) Xeon(TM) CPU 3.40GHz Dual Core = 16 CPUs Total.
Physical Memory Installed
Using: cat /proc/meminfo | head -2
MemTotal: 32902816 kB
MemFree: 1118768 kB
TCP/IP Settings
Gathered from File Contents of /proc/sys/net/ipv4/tcp*
tcp_bic_beta = 819
tcp_tso_win_divisor = 8
tcp_moderate_rcvbuf = 1
tcp_bic_low_window = 14
tcp_bic_fast_convergence = 1
tcp_bic = 1
tcp_vegas_gamma = 2
tcp_vegas_beta = 6
tcp_vegas_alpha = 2
tcp_vegas_cong_avoid = 0
tcp_westwood = 0
tcp_no_metrics_save = 0
tcp_low_latency = 0
tcp_frto = 0
tcp_tw_reuse = 0
tcp_adv_win_scale = 2
tcp_app_win = 31
tcp_rmem = 4096 87380 174760
tcp_wmem = 4096 16384 131072
tcp_mem = 786432 1048576 1572864
tcp_dsack = 1
tcp_ecn = 0
tcp_reordering = 3
tcp_fack = 1
tcp_orphan_retries = 0
tcp_max_syn_backlog = 1024
tcp_rfc1337 = 0
tcp_stdurg = 0
tcp_abort_on_overflow = 0
tcp_tw_recycle = 0
tcp_syncookies = 0
tcp_fin_timeout = 60
tcp_retries2 = 15
tcp_retries1 = 3
tcp_keepalive_intvl = 75
tcp_keepalive_probes = 9
tcp_keepalive_time = 7200
tcp_max_tw_buckets = 180000
tcp_max_orphans = 262144
tcp_synack_retries = 5
tcp_syn_retries = 5
tcp_retrans_collapse = 1
tcp_sack = 1
tcp_window_scaling = 1
tcp_timestamps = 1
UDP Settings
Gathered from File Contents of /proc/sys/net/core/*mem*
optmem_max = 20480
rmem_default = 262144
wmem_default = 262144
rmem_max = 262144
wmem_max = 262144
Network Interface Table
Using: netstat -i
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0 1500 0 640177086 0 0 0 677883558 0 0 0 BMRU
eth0:1 1500 0 - no statistics available - BMRU
eth1 1500 0 713575512 0 0 0 1139797781 0 0 0 BMRU
lo 16436 0 50991626 0 0 0 50991626 0 0 0 LRU
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Network Performance Statistics
Using: netstat -s
Ip:
1351110921 total packets received
17276 with invalid headers
0 forwarded
0 incoming packets discarded
1158986171 incoming packets delivered
1247802121 requests sent out
10 dropped because of missing route
33 fragments dropped after timeout
241843609 reassemblies required
50206252 packets reassembled ok
33 packet reassembles failed
127920149 fragments received ok
Icmp:
205958 ICMP messages received
25955 input ICMP message failed.
ICMP input histogram:
destination unreachable: 17997
timeout in transit: 2953
source quenches: 93
redirects: 156848
echo requests: 1880
echo replies: 263
4271 ICMP messages sent
0 ICMP messages failed
ICMP output histogram:
destination unreachable: 2366
time exceeded: 25
echo replies: 1880
Tcp:
336030 active connections openings
527441 passive connection openings
14 failed connection attempts
171369 connection resets received
207 connections established
711797408 segments received
722065567 segments send out
1302312 segments retransmited
7 bad segments received.
15392 resets sent
Udp:
424498796 packets received
386 packets to unknown port received.
856 packet receive errors
525732067 packets sent
TcpExt:
651 packets pruned from receive queue because of socket buffer overrun
55 ICMP packets dropped because they were out-of-window
ArpFilter: 0
414388 TCP sockets finished time wait in fast timer
87 time wait sockets recycled by time stamp
2617206 delayed acks sent
1514 delayed acks further delayed because of locked socket
Quick ack mode was activated 59809 times
678118261 packets directly queued to recvmsg prequeue.
77980117 packets directly received from backlog
1671360216 packets directly received from prequeue
4726597 packets header predicted
64645263 packets header predicted and directly queued to user
TCPPureAcks: 24015653
TCPHPAcks: 71818583
TCPRenoRecovery: 0
TCPSackRecovery: 141505
TCPSACKReneging: 0
TCPFACKReorder: 228
TCPSACKReorder: 25
TCPRenoReorder: 0
TCPTSReorder: 0
TCPFullUndo: 2
TCPPartialUndo: 1
TCPDSACKUndo: 2
TCPLossUndo: 873
TCPLoss: 168072
TCPLostRetransmit: 1
TCPRenoFailures: 0
TCPSackFailures: 17185
TCPLossFailures: 24
TCPFastRetrans: 211488
TCPForwardRetrans: 55431
TCPSlowStartRetrans: 130033
TCPTimeouts: 855943
TCPRenoRecoveryFail: 0
TCPSackRecoveryFail: 1467
TCPSchedulerFailed: 441
TCPRcvCollapsed: 12679
TCPDSACKOldSent: 60645
TCPDSACKOfoSent: 12
TCPDSACKRecv: 47
TCPDSACKOfoRecv: 0
TCPAbortOnSyn: 0
TCPAbortOnData: 181
TCPAbortOnClose: 83335
TCPAbortOnMemory: 0
TCPAbortOnTimeout: 1418
TCPAbortOnLinger: 0
TCPAbortFailed: 0
TCPMemoryPressures: 0
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Network Routing Table
Using: netstat -r
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
172.16.0.0 * 255.255.255.0 U 0 0 0 eth1
10.8.0.0 * 255.255.0.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth1
default 10.8.10.250 0.0.0.0 UG 0 0 0 eth0