bami82
14/09/09, 16:27
Beste WHT'ers,
Ik heb een setup met 2 tomcat servers die gelijk zijn geconfigureerd. Beide hebben een klein probleem, als ik een pagina open zit er af en toe een delay van tussen de 3 en de 8 seconde op voordat tomcat reageert.
Dit kan ik simuleren door simpel een wget te doen van de default tomcat index.jsp pagina. Ik heb echt geen idee wat dit veroorzaakt. Machine is niet super druk. Het gaat hier om een telefonie applicatie dus het is erg vervelend als er een paar seconde stilte valt zo af en toe. (4 a 5 op de 100 keer). Heeft iemand een idee wat het probleem kan zijn?
Attaching to process ID 1418, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 1.5.0_06-b05
using parallel threads in the new generation.
using thread-local object allocation.
Concurrent Mark-Sweep GC
Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 2147483648 (2048.0MB)
NewSize = 4194304 (4.0MB)
MaxNewSize = 96468992 (92.0MB)
OldSize = 12582912 (12.0MB)
NewRatio = 15
SurvivorRatio = 1024
PermSize = 209715200 (200.0MB)
MaxPermSize = 419430400 (400.0MB)
Heap Usage:
New Generation (Eden + 1 Survivor Space):
capacity = 96403456 (91.9375MB)
used = 15409864 (14.695991516113281MB)
free = 80993592 (77.24150848388672MB)
15.984763035881203% used
Eden Space:
capacity = 96337920 (91.875MB)
used = 15409864 (14.695991516113281MB)
free = 80928056 (77.17900848388672MB)
15.995637024340986% used
From Space:
capacity = 65536 (0.0625MB)
used = 0 (0.0MB)
free = 65536 (0.0625MB)
0.0% used
To Space:
capacity = 65536 (0.0625MB)
used = 0 (0.0MB)
free = 65536 (0.0625MB)
0.0% used
concurrent mark-sweep generation:
capacity = 2051014656 (1956.0MB)
used = 171451808 (163.50918579101562MB)
free = 1879562848 (1792.4908142089844MB)
8.35936532673904% used
Perm Generation:
capacity = 209715200 (200.0MB)
used = 73634952 (70.22376251220703MB)
free = 136080248 (129.77623748779297MB)
35.111881256103516% used
load averages: 0.54, 0.79, 0.75; up 18+04:55:53 15:24:42
115 processes: 113 sleeping, 2 on cpu
CPU states: 98.7% idle, 1.0% user, 0.3% kernel, 0.0% iowait, 0.0% swap
Memory: 8064M phys mem, 4583M free mem, 2002M swap, 2002M free swap
PID USERNAME LWP PRI NICE SIZE RES STATE TIME CPU COMMAND
1418 sfe 182 0 0 2528M 546M cpu 65.7H 24.83% java
1528 sfe 51 59 0 236M 93M sleep 78:35 2.95% java
1049 mysql 74 59 0 136M 113M sleep 360:49 2.13% mysqld
1061 root 1 59 0 18M 16M sleep 15:11 0.51% httpd
3448 sfe 1 49 0 3336K 2656K cpu 0:00 0.49% top
3451 nobody 1 59 0 18M 4400K sleep 0:00 0.28% httpd
3449 nobody 1 59 0 18M 4400K sleep 0:00 0.24% httpd
1145 noaccess 55 59 0 215M 127M sleep 37:15 0.24% java
3452 nobody 1 59 0 18M 4400K sleep 0:00 0.21% httpd
3455 nobody 1 59 0 18M 3672K sleep 0:00 0.14% httpd
3456 nobody 1 59 0 18M 3672K sleep 0:00 0.14% httpd
3450 sfe 1 53 2 1336K 1136K sleep 0:00 0.13% sleep
3457 nobody 1 59 0 18M 3672K sleep 0:00 0.13% httpd
3458 nobody 1 59 0 18M 3672K sleep 0:00 0.13% httpd
3459 sfe 1 53 2 1336K 1136K sleep 0:00 0.13% sleep
Deze is goed
15:34:12 (62.92 MB/s) - `index.jsp.36' saved [8132/8132]
--15:34:17-- http://localhost:8080/index.jsp
=> `index.jsp.37'
Resolving localhost... 127.0.0.1, ::1
Connecting to localhost|127.0.0.1|:8080... connected.
HTTP request sent, awaiting response... 200 OK
Length: 8,132 (7.9K) [text/html]
100%[================================================== ======================================>] 8,132 --.--K/s
15:34:17 (63.59 MB/s) - `index.jsp.37' saved [8132/8132]
Deze heeft 4 seconde vertraging
--15:34:22-- http://localhost:8080/index.jsp
=> `index.jsp.38'
Resolving localhost... 127.0.0.1, ::1
Connecting to localhost|127.0.0.1|:8080... connected.
HTTP request sent, awaiting response... 200 OK
Length: 8,132 (7.9K) [text/html]
100%[================================================== ======================================>] 8,132 --.--K/s
15:34:26 (45.89 MB/s) - `index.jsp.38' saved [8132/8132]
Ik heb een setup met 2 tomcat servers die gelijk zijn geconfigureerd. Beide hebben een klein probleem, als ik een pagina open zit er af en toe een delay van tussen de 3 en de 8 seconde op voordat tomcat reageert.
Dit kan ik simuleren door simpel een wget te doen van de default tomcat index.jsp pagina. Ik heb echt geen idee wat dit veroorzaakt. Machine is niet super druk. Het gaat hier om een telefonie applicatie dus het is erg vervelend als er een paar seconde stilte valt zo af en toe. (4 a 5 op de 100 keer). Heeft iemand een idee wat het probleem kan zijn?
Attaching to process ID 1418, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 1.5.0_06-b05
using parallel threads in the new generation.
using thread-local object allocation.
Concurrent Mark-Sweep GC
Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 2147483648 (2048.0MB)
NewSize = 4194304 (4.0MB)
MaxNewSize = 96468992 (92.0MB)
OldSize = 12582912 (12.0MB)
NewRatio = 15
SurvivorRatio = 1024
PermSize = 209715200 (200.0MB)
MaxPermSize = 419430400 (400.0MB)
Heap Usage:
New Generation (Eden + 1 Survivor Space):
capacity = 96403456 (91.9375MB)
used = 15409864 (14.695991516113281MB)
free = 80993592 (77.24150848388672MB)
15.984763035881203% used
Eden Space:
capacity = 96337920 (91.875MB)
used = 15409864 (14.695991516113281MB)
free = 80928056 (77.17900848388672MB)
15.995637024340986% used
From Space:
capacity = 65536 (0.0625MB)
used = 0 (0.0MB)
free = 65536 (0.0625MB)
0.0% used
To Space:
capacity = 65536 (0.0625MB)
used = 0 (0.0MB)
free = 65536 (0.0625MB)
0.0% used
concurrent mark-sweep generation:
capacity = 2051014656 (1956.0MB)
used = 171451808 (163.50918579101562MB)
free = 1879562848 (1792.4908142089844MB)
8.35936532673904% used
Perm Generation:
capacity = 209715200 (200.0MB)
used = 73634952 (70.22376251220703MB)
free = 136080248 (129.77623748779297MB)
35.111881256103516% used
load averages: 0.54, 0.79, 0.75; up 18+04:55:53 15:24:42
115 processes: 113 sleeping, 2 on cpu
CPU states: 98.7% idle, 1.0% user, 0.3% kernel, 0.0% iowait, 0.0% swap
Memory: 8064M phys mem, 4583M free mem, 2002M swap, 2002M free swap
PID USERNAME LWP PRI NICE SIZE RES STATE TIME CPU COMMAND
1418 sfe 182 0 0 2528M 546M cpu 65.7H 24.83% java
1528 sfe 51 59 0 236M 93M sleep 78:35 2.95% java
1049 mysql 74 59 0 136M 113M sleep 360:49 2.13% mysqld
1061 root 1 59 0 18M 16M sleep 15:11 0.51% httpd
3448 sfe 1 49 0 3336K 2656K cpu 0:00 0.49% top
3451 nobody 1 59 0 18M 4400K sleep 0:00 0.28% httpd
3449 nobody 1 59 0 18M 4400K sleep 0:00 0.24% httpd
1145 noaccess 55 59 0 215M 127M sleep 37:15 0.24% java
3452 nobody 1 59 0 18M 4400K sleep 0:00 0.21% httpd
3455 nobody 1 59 0 18M 3672K sleep 0:00 0.14% httpd
3456 nobody 1 59 0 18M 3672K sleep 0:00 0.14% httpd
3450 sfe 1 53 2 1336K 1136K sleep 0:00 0.13% sleep
3457 nobody 1 59 0 18M 3672K sleep 0:00 0.13% httpd
3458 nobody 1 59 0 18M 3672K sleep 0:00 0.13% httpd
3459 sfe 1 53 2 1336K 1136K sleep 0:00 0.13% sleep
Deze is goed
15:34:12 (62.92 MB/s) - `index.jsp.36' saved [8132/8132]
--15:34:17-- http://localhost:8080/index.jsp
=> `index.jsp.37'
Resolving localhost... 127.0.0.1, ::1
Connecting to localhost|127.0.0.1|:8080... connected.
HTTP request sent, awaiting response... 200 OK
Length: 8,132 (7.9K) [text/html]
100%[================================================== ======================================>] 8,132 --.--K/s
15:34:17 (63.59 MB/s) - `index.jsp.37' saved [8132/8132]
Deze heeft 4 seconde vertraging
--15:34:22-- http://localhost:8080/index.jsp
=> `index.jsp.38'
Resolving localhost... 127.0.0.1, ::1
Connecting to localhost|127.0.0.1|:8080... connected.
HTTP request sent, awaiting response... 200 OK
Length: 8,132 (7.9K) [text/html]
100%[================================================== ======================================>] 8,132 --.--K/s
15:34:26 (45.89 MB/s) - `index.jsp.38' saved [8132/8132]