[MonetDB-users] Crashing server

18 Apr 2005

      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  on the client.
Total operations: approximately 7500 BATs, 17,000,000 BUNs.

- Do an  on the server to confirm all tables are clean.

- Now perform an  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  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

Edmund Dengler

Stefan.Manegold＠cwi.nl

Edmund Dengler

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