On 27/05/2010 10:03, sesfei wrote: > hi, all > > there is a problem with my webapp.
What is the problem exactly? > by manual configuration, i allocated 1G(1024M) memory for webapp. > where the gc new capacity automatically is 262M, the gc old capacity > automatically is 699M, S0/S1 automatically is 43.6M/43.6M., PC > automatically > is 42M > > When my webapp is started, I use the jvm's own tools(jstat) to trace the > garbage collections. > the Utilization rate of the PC capacity is always 100%. is it normal? If you're reading the stats correctly, it would be right on the edge of an OOM, I think. You can also use jmap -heap <pid> to get a more readable output of the current heap status. You can post that here too. > Firstly the 1 Full GC is occurrenced within 1 hour, > 5 hours later that took place within 1 hour 100 Full GC. > is it normal? Probably. Depends on your app. p > [web operating environment:] > tomcat5.5.27 + Apache/2.2.3 + jdk1.5.0_13 + Linux_x86_64 > > [blow is my manual configurations for tomcat JVM:] > CATALINA_OPTS="-Xms1024M -Xmx1024M > -Dorg.apache.jasper.compiler.Parser.STRICT_QUOTE_ESCAPING=false" > > [Jstat Tracking data (csv data)] > systime, S0C, S1C, S0U, S1U, EC, EU, OC, OU, PC, PU, YGC, YGCT, > FGCT, GCT > 11:13:41, 9600, 3392, 0, 3369.3, 53568, 36562.3, 699072, 481787.7, > 61184, 61167, 249, 3.148, 0.005, 3.153 > 11:48:02, 4032, 3520, 0, 3520, 39616, 0, 699072, 697526, 67712, > 67573.5, 385, 4.849, 0.005, 4.854 > 13:23:53, 2496, 2496, 0, 0, 29568, 5620.2, 699072, 100281.5, > 71360, > 71236.5, 1003, 10.057, 3.48, 13.537 > 14:49:13, 2624, 2624, 0, 0, 27712, 12302, 679936, 74349.4, 78080, > 71771.3, 1898, 15.979, 3.962, 19.941 > 16:07:54, 3392, 3712, 1664, 0, 50496, 28601.3, 688000, 109525.6, > 78080, 74945.2, 2804, 21.46, 4.567, 26.027 > 16:24:03, 4480, 2304, 0, 0, 77632, 27240.9, 656960, 103414.1, > 78080, 75622.1, 3107, 23.191, 4.943, 28.134 > 16:33:39, 4160, 2304, 0, 0, 78144, 25196.7, 658752, 98731.2, > 78080, > 76421.6, 3365, 24.604, 5.329, 29.933 > 16:41:50, 5568, 3008, 0, 2952.4, 103424, 96055.6, 606976, 69788.7, > 78080, 74229.1, 3591, 25.889, 5.742, 31.631 > 16:42:40, 7360, 10176, 0, 0, 174464, 0, 652544, 91210.1, 86016, > 86010.7, 3620, 26.067, 6.081, 32.148 > 16:43:25, 19520, 19200, 0, 0, 179328, 12770.2, 681728, 55882.2, > 86016, 84680.4, 3637, 26.329, 7.634, 33.963 > 16:44:22, 21376, 20608, 0, 0, 181504, 13683.9, 681600, 55718.4, > 86016, 84905.3, 3653, 26.507, 8.276, 34.784 > 16:47:34, 22656, 23744, 17914.8, 0, 182656, 135109.5, 687232, > 56195.2, 86016, 85854.9, 3710, 27.079, 9.954, 37.032 > 16:51:16, 23360, 24064, 0, 0, 183872, 6675.4, 695232, 56231, > 86016, > 84901.6, 3784, 27.828, 13.631, 41.459 > 16:53:46, 24768, 23808, 0, 18298.8, 191872, 161459.7, 695616, > 56960.4, 86016, 85728.5, 3833, 28.605, 15.221, 43.826 > 16:57:43, 28800, 26944, 0, 21923, 200768, 5245.9, 699072, 66807, > 86016, 85505, 3909, 29.494, 17.746, 47.24 > 17:02:02, 28608, 10752, 0, 10720, 205824, 118015.1, 696128, > 56332.7, > 86016, 85880.8, 3999, 30.492, 22.473, 52.965 > 17:03:57, 32384, 32448, 17668.8, 0, 209152, 64383, 699072, 65796.8, > 86016, 85142.6, 4038, 31.049, 24.71, 55.759 > 17:09:19, 32256, 32576, 18938.8, 0, 224512, 43783.8, 699072, > 73448.4, 86016, 84862.6, 4146, 32.986, 30.05, 63.035 > 17:12:59, 54208, 52608, 0, 36976.4, 224640, 76931.5, 699072, > 63084.4, 86016, 85367, 4221, 34.258, 33.295, 67.553 > 17:16:21, 45632, 45760, 26864.6, 0, 224512, 158991.5, 699072, > 60327, > 86016, 85273.6, 4356, 37.225, 35.458, 72.683 > 17:24:47, 29120, 30016, 0, 14856.2, 274944, 103582.1, 697344, > 57937.4, 86016, 85176.8, 4525, 40.282, 40.071, 80.352 > 17:33:57, 32832, 34688, 25448.2, 0, 250560, 19438.8, 695808, 55692, > 86016, 85489.8, 4686, 44.335, 44.935, 89.27 > 17:44:33, 29952, 28672, 0, 22952.2, 280896, 175914.9, 696512, > 85648.5, 86016, 85940.8, 4845, 47.238, 47.198, 94.436 > > > thanks.. > > > -------------------------------------- > 2010 FIFA World Cup News [Yahoo!Sports/sportsnavi] > http://pr.mail.yahoo.co.jp/southafrica2010/ > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org >
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