You are better off using Sun Java 6 to run Cassandra. In the past there were issues reported on 7. Can you try running it on Sun Java 6?
kind regards Joost On Tue, Jul 24, 2012 at 10:04 AM, Nikolay Kоvshov <nkovs...@yandex.ru> wrote: > 48 G of Ram on that machine, swap is not used. I will disable swap at all > just in case > I have 4 cassandra processes (parts of 4 different clusters), each allocated > 8 GB and using 4 of them > >>java -version > java version "1.7.0" > Java(TM) SE Runtime Environment (build 1.7.0-b147) > Java HotSpot(TM) 64-Bit Server VM (build 21.0-b17, mixed mode) > > > > > 23.07.2012, 20:12, "Joost van de Wijgerd" <jwijg...@gmail.com>: >> Howmuch memory do you have on the machine. Seems like you have 8G >> reserved for the Cassandra java process, If this is all the memory on >> the machine you might be swapping. Also which jvm do you use? >> >> kind regards >> >> Joost >> >> On Mon, Jul 23, 2012 at 10:07 AM, Nikolay Kоvshov <nkovs...@yandex.ru> wrote: >> >>> 21th I have mirgated to cassandra 1.1.2 but see no improvement >>> >>> cat /var/log/cassandra/Earth1.log | grep "GC for" >>> INFO [ScheduledTasks:1] 2012-05-22 17:42:48,445 GCInspector.java (line >>> 123) GC for ParNew: 345 ms for 1 collections, 82451888 used; max is >>> 8464105472 >>> INFO [ScheduledTasks:1] 2012-05-23 02:47:13,911 GCInspector.java (line >>> 123) GC for ParNew: 312 ms for 1 collections, 110617416 used; max is >>> 8464105472 >>> INFO [ScheduledTasks:1] 2012-05-23 11:57:54,317 GCInspector.java (line >>> 123) GC for ParNew: 298 ms for 1 collections, 98161920 used; max is >>> 8464105472 >>> INFO [ScheduledTasks:1] 2012-07-02 08:52:37,019 GCInspector.java (line >>> 123) GC for ParNew: 196886 ms for 1 collections, 2310058496 used; max is >>> 8464105472 >>> INFO [ScheduledTasks:1] 2012-07-16 17:41:25,940 GCInspector.java (line >>> 123) GC for ParNew: 200146 ms for 1 collections, 2345987088 used; max is >>> 8464105472 >>> === Migrated from 1.0.0 to 1.1.2 >>> INFO [ScheduledTasks:1] 2012-07-21 09:05:08,280 GCInspector.java (line >>> 122) GC for ParNew: 282 ms for 1 collections, 466406864 used; max is >>> 8464105472 >>> INFO [ScheduledTasks:1] 2012-07-21 12:38:43,132 GCInspector.java (line >>> 122) GC for ParNew: 233 ms for 1 collections, 405269504 used; max is >>> 8464105472 >>> INFO [ScheduledTasks:1] 2012-07-22 02:29:09,596 GCInspector.java (line >>> 122) GC for ParNew: 253 ms for 1 collections, 389700768 used; max is >>> 8464105472 >>> INFO [ScheduledTasks:1] 2012-07-22 17:45:46,357 GCInspector.java (line >>> 122) GC for ParNew: 57391 ms for 1 collections, 400083984 used; max is >>> 8464105472 >>> >>> Memory and yaml memory-related settings are default >>> I do not do deletes >>> I have 2 CF's and no secondary indexes >>> >>> LiveRatio's: >>> INFO [pool-1-thread-1] 2012-06-09 02:36:07,759 Memtable.java (line 177) >>> CFS(Keyspace='Keyspace1', ColumnFamily='PSS') liveRatio is 1.0 >>> (just-counted was 1.0). calculation took 85ms for 6236 columns >>> INFO [MemoryMeter:1] 2012-07-21 09:04:47,614 Memtable.java (line 213) >>> CFS(Keyspace='Keyspace1', ColumnFamily='Standard1') liveRatio is 1.0 >>> (just-counted was 1.0). calculation took 8ms for 1 columns >>> INFO [MemoryMeter:1] 2012-07-21 09:04:51,012 Memtable.java (line 213) >>> CFS(Keyspace='Keyspace1', ColumnFamily='PSS') liveRatio is 1.0 >>> (just-counted was 1.0). calculation took 99ms for 1094 columns >>> INFO [MemoryMeter:1] 2012-07-21 09:04:51,331 Memtable.java (line 213) >>> CFS(Keyspace='Keyspace1', ColumnFamily='Standard1') liveRatio is 1.0 >>> (just-counted was 1.0). calculation took 80ms for 242 columns >>> INFO [MemoryMeter:1] 2012-07-21 09:04:51,856 Memtable.java (line 213) >>> CFS(Keyspace='Keyspace1', ColumnFamily='PSS') liveRatio is 1.0 >>> (just-counted was 1.0). calculation took 505ms for 2678 columns >>> INFO [MemoryMeter:1] 2012-07-21 09:04:52,881 Memtable.java (line 213) >>> CFS(Keyspace='Keyspace1', ColumnFamily='PSS') liveRatio is 1.0 >>> (just-counted was 1.0). calculation took 776ms for 5236 columns >>> INFO [MemoryMeter:1] 2012-07-21 09:04:52,945 Memtable.java (line 213) >>> CFS(Keyspace='Keyspace1', ColumnFamily='Standard1') liveRatio is 1.0 >>> (just-counted was 1.0). calculation took 64ms for 389 columns >>> INFO [MemoryMeter:1] 2012-07-21 09:04:55,162 Memtable.java (line 213) >>> CFS(Keyspace='Keyspace1', ColumnFamily='PSS') liveRatio is 1.0 >>> (just-counted was 1.0). calculation took 1378ms for 8948 columns >>> INFO [MemoryMeter:1] 2012-07-21 09:04:55,304 Memtable.java (line 213) >>> CFS(Keyspace='Keyspace1', ColumnFamily='Standard1') liveRatio is 1.0 >>> (just-counted was 1.0). calculation took 140ms for 1082 columns >>> INFO [MemoryMeter:1] 2012-07-21 09:05:08,439 Memtable.java (line 213) >>> CFS(Keyspace='Keyspace1', ColumnFamily='Standard1') liveRatio is >>> 2.5763038186160894 (just-counted was 2.5763038186160894). calculation took >>> 8796ms for 102193 columns >>> >>> 18.07.2012, 07:51, "aaron morton" <aa...@thelastpickle.com>: >>>> Assuming all the memory and yaml settings default that does not sound >>>> right. The first thought would be the memory meter not counting >>>> correctly... >>>> Do you do a lot of deletes ? >>>> Do you have a lot of CF's and/or secondary indexes ? >>>> Can you see log lines about the "liveRatio" for your cf's ? >>>> I would upgrade to 1.0.10 before getting too carried away though. >>>> Cheers >>>> >>>> ----------------- >>>> Aaron Morton >>>> Freelance Developer >>>> @aaronmorton >>>> http://www.thelastpickle.com >>>> >>>> On 17/07/2012, at 8:14 PM, Nikolay Kоvshov wrote: >>>>> This is a cluster of 2 nodes, each having 8G of operating memory, >>>>> replicationfactor=2 >>>>> Write/read pressure is quite low and almost never exceeds 10/second >>>>> >>>>> From time to time (2-3 times in a month) I see GC activity in logs and >>>>> for this time cassandra stops responding to requests which results in a >>>>> timeout in upper-layer application. Total time of unavailability can be >>>>> over 5 minues (like in the following case) >>>>> >>>>> What can I do with that? Wiil it become much worse when my cluster grows >>>>> up? >>>>> >>>>> INFO [GossipTasks:1] 2012-07-16 13:10:50,055 Gossiper.java (line 736) >>>>> InetAddress /10.220.50.9 is now dead. >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,056 GCInspector.java (line >>>>> 123) GC for ParNew: 391383 ms for 1 collections, 2025808488 used; max is >>>>> 8464105472 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,067 StatusLogger.java (line >>>>> 50) Pool Name Active Pending Blocked >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,071 StatusLogger.java (line >>>>> 65) ReadStage 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,071 StatusLogger.java (line >>>>> 65) RequestResponseStage 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,072 StatusLogger.java (line >>>>> 65) ReadRepairStage 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,072 StatusLogger.java (line >>>>> 65) MutationStage 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,073 StatusLogger.java (line >>>>> 65) ReplicateOnWriteStage 0 0 0 >>>>> INFO [GossipStage:1] 2012-07-16 13:10:50,074 Gossiper.java (line 722) >>>>> InetAddress /10.220.50.9 is now UP >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,075 StatusLogger.java (line >>>>> 65) GossipStage 1 59 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,075 StatusLogger.java (line >>>>> 65) AntiEntropyStage 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,076 StatusLogger.java (line >>>>> 65) MigrationStage 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,076 StatusLogger.java (line >>>>> 65) StreamStage 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,077 StatusLogger.java (line >>>>> 65) MemtablePostFlusher 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,077 StatusLogger.java (line >>>>> 65) FlushWriter 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,077 StatusLogger.java (line >>>>> 65) MiscStage 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,078 StatusLogger.java (line >>>>> 65) InternalResponseStage 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,078 StatusLogger.java (line >>>>> 65) HintedHandoff 0 0 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,079 StatusLogger.java (line >>>>> 69) CompactionManager n/a 0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,079 StatusLogger.java (line >>>>> 81) MessagingService n/a 0,0 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,080 StatusLogger.java (line >>>>> 85) ColumnFamily Memtable ops,data Row cache size/cap >>>>> Key cache size/cap >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,080 StatusLogger.java (line >>>>> 88) Keyspace1.PSS 36712,343842617 0/0 >>>>> 97995/1000000 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,085 StatusLogger.java (line >>>>> 88) Keyspace1.Standard1 128679,162567721 0/0 >>>>> 0/1000000 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,085 StatusLogger.java (line >>>>> 88) system.NodeIdInfo 0,0 0/0 >>>>> 0/1 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,086 StatusLogger.java (line >>>>> 88) system.IndexInfo 0,0 0/0 >>>>> 0/1 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,086 StatusLogger.java (line >>>>> 88) system.LocationInfo 0,0 0/0 >>>>> 1/2 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,086 StatusLogger.java (line >>>>> 88) system.Migrations 0,0 0/0 >>>>> 3/3 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,087 StatusLogger.java (line >>>>> 88) system.HintsColumnFamily 1,528 0/0 >>>>> 0/1 >>>>> INFO [ScheduledTasks:1] 2012-07-16 13:10:50,087 StatusLogger.java (line >>>>> 88) system.Schema 0,0 0/0 >>>>> 2/3 >>>>> -------- Завершение пересылаемого сообщения -------- >> -- >> Joost van de Wijgerd >> Visseringstraat 21B >> 1051KH Amsterdam >> +31624111401 >> joost.van.de.wijgerd@Skype >> http://www.linkedin.com/in/jwijgerd -- Joost van de Wijgerd Visseringstraat 21B 1051KH Amsterdam +31624111401 joost.van.de.wijgerd@Skype http://www.linkedin.com/in/jwijgerd
