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From Vladimir Ozerov <voze...@gridgain.com>
Subject Re: Performance Issue - Threads blocking
Date Fri, 22 Apr 2016 12:07:08 GMT
Hi,

Could you please explain why do you think that the thread is blocked? I see
it is in a RUNNABLE state.

Vladimir.

On Fri, Apr 22, 2016 at 2:41 AM, ccanning <ccanning@stubhub.com> wrote:

> We seem to be having some serious performance issues after adding Apache
> Ignite Local cache to our APIs'. Looking at a heap dump, we seem to have a
> bunch of threads blocked by this lock:
>
> "ajp-0.0.0.0-8009-70" - Thread t@641
>    java.lang.Thread.State: RUNNABLE
>         at
>
> org.apache.ignite.internal.binary.BinaryReaderExImpl.<init>(BinaryReaderExImpl.java:166)
>         at
>
> org.apache.ignite.internal.binary.BinaryUtils.doReadObject(BinaryUtils.java:1486)
>         at
>
> org.apache.ignite.internal.binary.BinaryUtils.deserializeOrUnmarshal(BinaryUtils.java:1830)
>         at
>
> org.apache.ignite.internal.binary.BinaryUtils.doReadMap(BinaryUtils.java:1813)
>         at
>
> org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize(BinaryReaderExImpl.java:1597)
>         at
>
> org.apache.ignite.internal.binary.BinaryReaderExImpl.readField(BinaryReaderExImpl.java:1646)
>         at
>
> org.apache.ignite.internal.binary.BinaryFieldAccessor$DefaultFinalClassAccessor.read(BinaryFieldAccessor.java:643)
>         at
>
> org.apache.ignite.internal.binary.BinaryClassDescriptor.read(BinaryClassDescriptor.java:714)
>         at
>
> org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize(BinaryReaderExImpl.java:1450)
>         at
>
> org.apache.ignite.internal.binary.BinaryObjectImpl.deserializeValue(BinaryObjectImpl.java:537)
>         at
>
> org.apache.ignite.internal.binary.BinaryObjectImpl.value(BinaryObjectImpl.java:117)
>         at
>
> org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinary(CacheObjectContext.java:280)
>         at
>
> org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinaryIfNeeded(CacheObjectContext.java:145)
>         at
>
> org.apache.ignite.internal.processors.cache.GridCacheEventManager.addEvent(GridCacheEventManager.java:276)
>         at
>
> org.apache.ignite.internal.processors.cache.GridCacheEventManager.addEvent(GridCacheEventManager.java:159)
>         at
>
> org.apache.ignite.internal.processors.cache.GridCacheEventManager.addEvent(GridCacheEventManager.java:92)
>         at
>
> org.apache.ignite.internal.processors.cache.GridCacheMapEntry.innerGet0(GridCacheMapEntry.java:862)
>         - locked <70d32489> (a
> org.apache.ignite.internal.processors.cache.local.GridLocalCacheEntry)
>         at
>
> org.apache.ignite.internal.processors.cache.GridCacheMapEntry.innerGet(GridCacheMapEntry.java:669)
>         at
>
> org.apache.ignite.internal.processors.cache.local.atomic.GridLocalAtomicCache.getAllInternal(GridLocalAtomicCache.java:587)
>         at
>
> org.apache.ignite.internal.processors.cache.local.atomic.GridLocalAtomicCache.get(GridLocalAtomicCache.java:483)
>         at
>
> org.apache.ignite.internal.processors.cache.GridCacheAdapter.get(GridCacheAdapter.java:1378)
>         at
>
> org.apache.ignite.internal.processors.cache.IgniteCacheProxy.get(IgniteCacheProxy.java:864)
>         at
> org.apache.ignite.cache.spring.SpringCache.get(SpringCache.java:52)
>
> **** - locked <70d32489> (a
> org.apache.ignite.internal.processors.cache.local.GridLocalCacheEntry)
>
> Should this be causing blocking in a high-throughput API? Do you have any
> pointers in how we could solve this issue?
>
> Thanks.
>
>
>
> --
> View this message in context:
> http://apache-ignite-users.70518.x6.nabble.com/Performance-Issue-Threads-blocking-tp4433.html
> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
>

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