Re: [Resin-interest] resin hang
each time resin hang, we can find logs like this:
[2012-07-31 16:15:51.002]
{http--8080-3562$458110589}SessionImpl[abcHefmXCW84PfMKtgCJt,] LRU while in
use (use-count=1). Consider increasing session-count.
[2012-07-31 16:15:51.007]
{http--8080-3135$1712837012}SessionImpl[abcjyOkzo4PRk5OZVtAJt,] LRU while
in use (use-count=1). Consider increasing session-count.
[2012-07-31 16:15:51.025]
{http--8080-3140$1696663856}SessionImpl[abcJXzltaA3iAavORQAJt,] LRU while
in use (use-count=1). Consider increasing session-count.
2012/8/3 Chen Bangzhong
>
> Attached is the jstack dump. Can you confirm it is the same issue as 3509?
>
> If it is issue 3509, is there any workaround? Which version should I
> upgrade to ?
>
> thanks
>
>
>
>
> 2012/8/2 Scott Ferguson
>
>> On 08/01/2012 08:19 AM, Chen Bangzhong wrote:
>>
>> Hi, All
>>
>> We run resin 3.1.9 open source version in our production environment. The
>> visit is about 5M visit/day per resin instance. We ran into the resin hang
>> problem several times. We belive it is the same problem as bug 3509
>>
>> http://bugs.caucho.com/view.php?id=3509
>>
>> All the threads are deadlocked and the number of threads is approaching
>> the thread-max setting.
>>
>> Is there any workaroud to bug 3509 except upgrade to 4.0? Is this bug
>> fixed in resin 3.1 ? Can we disable access log to workaroud this problem?
>>
>>
>> Does your thread dump show the same place that it's blocking on as in
>> that bug report? i.e. the access log.
>>
>>
>>
>> Besides, what's the suggested thread-max for resin ? We set it to 3000,
>> is it too big?
>>
>>
>> That's a good value.
>>
>>
>> If we set it to a lower value, what will happen if the concurrent
>> requests exceeds the thread-max value?
>>
>>
>> In a normal situation, you shouldn't reach the thread-max ever. (Resin
>> 4.0.x enforces that better with a port-thread-max.)
>>
>> If it hits thread max, Resin will queue new thread requests until one is
>> idle.
>>
>>
>>
>> Another observation is that when the problem arise, the number of threads
>> is approaching the thread-max setting. I want to know under what condition
>> will resin start a new thread?
>>
>>
>> There's a thread-idle-min value. When the number of idle threads drops
>> below that value, Resin spawns a new one. That generally avoids any actual
>> wait for a new thread to be spawned, because they're normally taken from
>> the idle pool.
>>
>>
>>
>> Our environment:
>>
>> Jdk 1.6.21 on CentOS 5.3 64bit
>> Resin 3.1.9 open source version
>> -Xms 4G -Xmx 4G -Xmn 1200m
>>
>> -Xmn1200m
>> -Xms4000m
>> -Xmx4000m
>> -Xss128k
>>
>> 100M
>> 3000
>> 65s
>> 250
>> 10s
>>
>>
>> These look fine.
>>
>> -- Scott
>>
>>
>> thanks.
>>
>>
>>
>>
>> ___
>> resin-interest mailing
>> listresin-interest@caucho.comhttp://maillist.caucho.com/mailman/listinfo/resin-interest
>>
>>
>>
>>
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>>
>>
>
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Re: [Resin-interest] resin hang
On 08/01/2012 08:19 AM, Chen Bangzhong wrote: Hi, All We run resin 3.1.9 open source version in our production environment. The visit is about 5M visit/day per resin instance. We ran into the resin hang problem several times. We belive it is the same problem as bug 3509 http://bugs.caucho.com/view.php?id=3509 All the threads are deadlocked and the number of threads is approaching the thread-max setting. Is there any workaroud to bug 3509 except upgrade to 4.0? Is this bug fixed in resin 3.1 ? Can we disable access log to workaroud this problem? Does your thread dump show the same place that it's blocking on as in that bug report? i.e. the access log. Besides, what's the suggested thread-max for resin ? We set it to 3000, is it too big? That's a good value. If we set it to a lower value, what will happen if the concurrent requests exceeds the thread-max value? In a normal situation, you shouldn't reach the thread-max ever. (Resin 4.0.x enforces that better with a port-thread-max.) If it hits thread max, Resin will queue new thread requests until one is idle. Another observation is that when the problem arise, the number of threads is approaching the thread-max setting. I want to know under what condition will resin start a new thread? There's a thread-idle-min value. When the number of idle threads drops below that value, Resin spawns a new one. That generally avoids any actual wait for a new thread to be spawned, because they're normally taken from the idle pool. Our environment: Jdk 1.6.21 on CentOS 5.3 64bit Resin 3.1.9 open source version -Xms 4G -Xmx 4G -Xmn 1200m -Xmn1200m -Xms4000m -Xmx4000m -Xss128k 100M 3000 65s 250 10s These look fine. -- Scott thanks. ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
[Resin-interest] resin hang
Hi, All We run resin 3.1.9 open source version in our production environment. The visit is about 5M visit/day per resin instance. We ran into the resin hang problem several times. We belive it is the same problem as bug 3509 http://bugs.caucho.com/view.php?id=3509 All the threads are deadlocked and the number of threads is approaching the thread-max setting. Is there any workaroud to bug 3509 except upgrade to 4.0? Is this bug fixed in resin 3.1 ? Can we disable access log to workaroud this problem? Besides, what's the suggested thread-max for resin ? We set it to 3000, is it too big? If we set it to a lower value, what will happen if the concurrent requests exceeds the thread-max value? Another observation is that when the problem arise, the number of threads is approaching the thread-max setting. I want to know under what condition will resin start a new thread? Our environment: Jdk 1.6.21 on CentOS 5.3 64bit Resin 3.1.9 open source version -Xms 4G -Xmx 4G -Xmn 1200m -Xmn1200m -Xms4000m -Xmx4000m -Xss128k 100M 3000 65s 250 10s thanks. ___ resin-interest mailing list resin-interest@caucho.com http://maillist.caucho.com/mailman/listinfo/resin-interest
