ISQL sessions finished extremely slow when database moves to SHUTDOWN state
(2.5.x only)
----------------------------------------------------------------------------------------
Key: CORE-5106
URL: http://tracker.firebirdsql.org/browse/CORE-5106
Project: Firebird Core
Issue Type: Bug
Components: Engine
Affects Versions: 2.5.5
Reporter: Pavel Zotov
Attachments:
gdb-pausing-fb_smp_server-and-fn_lock_print-two-snapshots-with-_a-then-with_-l__-n-switches.7z,
shut-active_25.7z
After database state is moved to shutdown, some of ISQL sessions (which do
intensive DML at this moment) can return control to OS extremely slow, elapsed
time is measured about 5-7 minutes.
Batch + .sql scripts are in attached .zip.
When this occured, I've ran:
1) gdb (without arguments) for suspending FB process,
2) made two "snapshots" of lock table (with "-a" and "-l -n" swicthes), and
finally
3) obtain remaining stacktrace by issuing commands in gdb prompt:
===
set logging on
set height 0
thread apply all bt
===
Lock-print data and stack trace see also in attached file.
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