Greetings! Having some problems with the MonetDB server crashing. - Start a server - Have a client perform a lot of operations (_lots_ of BATs creation, bun insertions, etc). - Every 10,000 or so operations, perform a <commit();> on the client. Total operations: approximately 7500 BATs, 17,000,000 BUNs. - Do an <ls();> on the server to confirm all tables are clean. - Now perform an <abort();> on the server with every table clean. MonetDB>abort(); #GDKmmap(6553600) fail => BBPtrim(enter) usage[mem=736705664,vm=2137835808] # !mallinfo.arena = 35753984 !mallinfo.ordblks = 4454 !mallinfo.smblks = 0 !mallinfo.hblkhd = 122863616 !mallinfo.hblks = 33 !mallinfo.usmblks = 0 !mallinfo.fsmblks = 0 !mallinfo.uordblks = 15990816 !mallinfo.fordblks = 19763168 #GDKmmap(6553600) fail => BBPtrim(ready) usage[mem=736705664,vm=2137835808] # !mallinfo.arena = 35753984 ... (and so on) Doing a <ulimit -a> shows: core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited file size (blocks, -f) unlimited max locked memory (kbytes, -l) 32 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 14336 virtual memory (kbytes, -v) unlimited Anybody have any ideas on why the server died? If I do it with less (_much_ less) operations, it at least succeeds (even though there is a lot of I/O occurring). Regards! Ed