Thank you Denis for the hint! Kind regards Peter
2016-07-05 14:35 GMT+02:00 Denis Magda <dma...@gridgain.com>: > Peter, > > Measure it basing under your load. Sometimes it’s enough to have Java > heaps 8 GB in size to work under significant load with off-heap data in > hundreds of GBs in size. > > — > Denis > > On Jul 5, 2016, at 3:20 PM, Peter Schmitt <peter.schmitt....@gmail.com> > wrote: > > Hi Denis, > > we are trying to store a huge amount of data off-heap (more than 50 GB). > Therefore, we need to know the heap-size which is needed by Ignite to > handle such a huge off-heap cache (which we only need to keep the heap-size > as low as possible due to the GC overhead). > > Kind regards > Peter > > > > 2016-07-05 11:41 GMT+02:00 Denis Magda <dma...@gridgain.com>: > >> Hi Peter, >> >> Basically it depends on your use case. Sometimes it’s enough 2 GB, >> sometimes 5 GB or 10 GB. It depends on the workload. >> However you shouldn’t allocate too big Java heaps with size more than 20 >> GB because it can lead to long stop-the-world pauses at some time. >> >> — >> Denis >> >> On Jul 3, 2016, at 11:29 AM, Peter Schmitt <peter.schmitt....@gmail.com> >> wrote: >> >> Hi Val, >> >> after several tests I can confirm that it works with more heap-memory. >> However, I'm not sure how much heap-memory is needed for 50+ GB >> off-heap-data and I can't find hints for it in the docs. >> >> Kind regards >> Peter >> >> >> >> 2016-06-30 22:23 GMT+02:00 vkulichenko <valentin.kuliche...@gmail.com>: >> >>> Hi Peter, >>> >>> It sound like you just don't give enough heap memory to a node. Heap >>> memory >>> is still required, even if you store all the data off heap. Can you try >>> to >>> your JVM at least 2GB and check if this helps? >>> >>> -Val >>> >>> >>> >>> -- >>> View this message in context: >>> http://apache-ignite-users.70518.x6.nabble.com/Non-cluster-mode-tp5959p6028.html >>> Sent from the Apache Ignite Users mailing list archive at Nabble.com >>> <http://nabble.com/>. >>> >> >> >> > >
