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[Wrapper-user] Wrapper did not ping JVM for several minutes
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From: Osiris <os...@ia...> - 2010-08-16 07:34:32
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I am running the Linux Java Service Wrapper (3.5.3) and have been having the
following problem for months: every few hours (randomly it seems), the
wrapper does not ping the JVM for about 5 minutes:
STATUS | wrapper | 2010/08/15 18:47:08 | Ticks=0001c8b5,
WrapperState=STARTED, JVMState=STARTED JVMStateTimeoutTicks=0001c9ed (31s),
Exit=false, RestartMode=0, Orphan=false
INFO | jvm 1 | 2010/08/15 18:52:08 | WrapperManager Debug: Read
Timed out. (Last Ping was 303,200 milliseconds ago)
CPU usage is minimal during this time, and the server was given a hardware
swap to rule out faulty hardware and there is no power management on the
server. Has anyone seen this behaviour before?
In the following sar output (logs every minute), there are some missing
entries (18:49, 18:51), which might indicate CPU suspension for some reason:
sar -s 18:48:00 -e 18:52:00 -f /var/log/sysstat/sa15 -u -d -r -n ALL
18:48:01 CPU %user %nice %system %iowait %steal
%idle
18:50:01 all 0.10 0.00 0.16 0.01 0.00
99.74
Average: all 0.10 0.00 0.16 0.01 0.00
99.74
18:48:01 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit
%commit
18:50:01 3078524 1033780 25.14 144144 487128 665964
3.19
Average: 3078524 1033780 25.14 144144 487128 665964
3.19
18:48:01 DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz
await svctm %util
18:50:01 dev8-0 22.40 0.00 307.20 13.71 0.14
6.43 5.93 13.28
18:50:01 dev8-16 22.40 0.00 307.20 13.71 0.14
6.07 5.57 12.48
18:50:01 dev9-0 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00
18:50:01 dev9-1 25.60 0.00 204.80 8.00 0.00
0.00 0.00 0.00
Average: dev8-0 22.40 0.00 307.20 13.71 0.14
6.43 5.93 13.28
Average: dev8-16 22.40 0.00 307.20 13.71 0.14
6.07 5.57 12.48
Average: dev9-0 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00
Average: dev9-1 25.60 0.00 204.80 8.00 0.00
0.00 0.00 0.00
18:48:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s
txcmp/s rxmcst/s
18:50:01 lo 0.00 0.00 0.00 0.00 0.00
0.00 0.00
18:50:01 eth0 0.00 0.00 0.00 0.00 0.00
0.00 0.00
Average: lo 0.00 0.00 0.00 0.00 0.00
0.00 0.00
Average: eth0 0.00 0.00 0.00 0.00 0.00
0.00 0.00
18:48:01 IFACE rxerr/s txerr/s coll/s rxdrop/s txdrop/s
txcarr/s rxfram/s rxfifo/s txfifo/s
18:50:01 lo 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00
18:50:01 eth0 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00
Average: lo 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00
Average: eth0 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00
18:48:01 call/s retrans/s read/s write/s access/s getatt/s
18:50:01 0.00 0.00 0.00 0.00 0.00 0.00
Average: 0.00 0.00 0.00 0.00 0.00 0.00
18:48:01 scall/s badcall/s packet/s udp/s tcp/s hit/s
miss/s sread/s swrite/s saccess/s sgetatt/s
18:50:01 0.00 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00 0.00
Average: 0.00 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00 0.00
18:48:01 totsck tcpsck udpsck rawsck ip-frag tcp-tw
18:50:01 105 12 2 0 0 0
Average: 105 12 2 0 0 0
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