mysql> show processlist; +-------+------+------+------+---------+-------+---------------------------------+-----------------------------------------------------------------------------------------+ | Id | User | Host | db | Command | Time | State | Info | +-------+------+------+------+---------+-------+---------------------------------+-----------------------------------------------------------------------------------------+ | 4 | root | | test | Sleep | 3 | | NULL | | 21 | root | | NULL | Query | 0 | NULL | show processlist | | 25309 | root | | test | Query | 11017 | Waiting for table | select * from `t1` limit 1 | | 25310 | root | | test | Query | 11017 | Waiting for release of readlock | update ignore `t1` set `id`=if(abs(-1257833935)%100<20,null,'-9449') where `id` = '-18' | +-------+------+------+------+---------+-------+---------------------------------+-----------------------------------------------------------------------------------------+ 4 rows in set (0.00 sec) (gdb) thread apply all bt Thread 13 (Thread -1208980592 (LWP 1300)): #0 0x00914402 in __kernel_vsyscall () #1 0x00de4206 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/nosegneg/libpthread.so.0 #2 0x08377107 in os_event_wait_low (event=0x900e0d0, reset_sig_count=1) at os/os0sync.c:422 #3 0x08375140 in os_aio_simulated_handle (global_segment=0, message1=0xfffffffc, message2=0xfffffffc, type=0xfffffffc) at os/os0file.c:4187 #4 0x08348364 in fil_aio_wait (segment=0) at fil/fil0fil.c:4246 #5 0x083a2041 in io_handler_thread (arg=0xfffffffc) at srv/srv0start.c:434 #6 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #7 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 12 (Thread -1240818800 (LWP 1301)): #0 0x00914402 in __kernel_vsyscall () #1 0x00de4206 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/nosegneg/libpthread.so.0 #2 0x08377107 in os_event_wait_low (event=0x900e148, reset_sig_count=3) at os/os0sync.c:422 #3 0x08375140 in os_aio_simulated_handle (global_segment=1, message1=0xfffffffc, message2=0xfffffffc, type=0xfffffffc) at os/os0file.c:4187 #4 0x08348364 in fil_aio_wait (segment=1) at fil/fil0fil.c:4246 #5 0x083a2041 in io_handler_thread (arg=0xfffffffc) at srv/srv0start.c:434 #6 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #7 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 11 (Thread -1251308656 (LWP 1302)): #0 0x00914402 in __kernel_vsyscall () #1 0x00de4206 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/nosegneg/libpthread.so.0 #2 0x08377107 in os_event_wait_low (event=0x900e1c0, reset_sig_count=2) at os/os0sync.c:422 #3 0x08375140 in os_aio_simulated_handle (global_segment=2, message1=0xfffffffc, message2=0xfffffffc, type=0xfffffffc) at os/os0file.c:4187 #4 0x08348364 in fil_aio_wait (segment=2) at fil/fil0fil.c:4246 #5 0x083a2041 in io_handler_thread (arg=0xfffffffc) at srv/srv0start.c:434 #6 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #7 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 10 (Thread -1261798512 (LWP 1303)): #0 0x00914402 in __kernel_vsyscall () #1 0x00de4206 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/nosegneg/libpthread.so.0 #2 0x08377107 in os_event_wait_low (event=0x900e238, reset_sig_count=1) at os/os0sync.c:422 #3 0x08375140 in os_aio_simulated_handle (global_segment=3, message1=0xfffffffc, message2=0xfffffffc, type=0xfffffffc) at os/os0file.c:4187 #4 0x08348364 in fil_aio_wait (segment=3) at fil/fil0fil.c:4246 #5 0x083a2041 in io_handler_thread (arg=0xfffffffc) at srv/srv0start.c:434 #6 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #7 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 9 (Thread -1287558256 (LWP 1305)): #0 0x00914402 in __kernel_vsyscall () #1 0x00d59ea1 in ___newselect_nocancel () from /lib/i686/nosegneg/libc.so.6 #2 0x0837784f in os_thread_sleep (tm=0) at os/os0thread.c:281 #3 0x0839f32f in srv_lock_timeout_and_monitor_thread (arg=0x0) at srv/srv0srv.c:1905 #4 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #5 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 8 (Thread -1298048112 (LWP 1306)): #0 0x00914402 in __kernel_vsyscall () #1 0x00d59ea1 in ___newselect_nocancel () from /lib/i686/nosegneg/libc.so.6 #2 0x0837784f in os_thread_sleep (tm=0) at os/os0thread.c:281 #3 0x0839f8b3 in srv_error_monitor_thread (arg=0x0) at srv/srv0srv.c:2131 #4 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #5 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 7 (Thread -1308537968 (LWP 1307)): #0 0x00914402 in __kernel_vsyscall () #1 0x00de4206 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/nosegneg/libpthread.so.0 #2 0x08377107 in os_event_wait_low (event=0x8c8da90, reset_sig_count=1) at os/os0sync.c:422 #3 0x083a0317 in srv_master_thread (arg=0x0) at srv/srv0srv.c:2620 #4 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #5 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 6 (Thread -1272288368 (LWP 1308)): #0 0x00914402 in __kernel_vsyscall () #1 0x00de806e in do_sigwait () from /lib/i686/nosegneg/libpthread.so.0 #2 0x00de810f in sigwait () from /lib/i686/nosegneg/libpthread.so.0 #3 0x081ca3d2 in signal_hand (arg=0x0) at mysqld.cc:2707 #4 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #5 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 5 (Thread -1272689776 (LWP 1313)): #0 0x00914402 in __kernel_vsyscall () #1 0x00de6e2b in __read_nocancel () from /lib/i686/nosegneg/libpthread.so.0 #2 0x084073c6 in vio_read (vio=0xfffffe00, buf=0x90a7070 "\001", size=4) at viosocket.c:44 #3 0x081c39dc in my_real_read (net=0x907e620, complen=0xb4244358) at net_serv.cc:815 #4 0x081c36ae in my_net_read (net=0x907e620) at net_serv.cc:996 #5 0x081d3d7e in do_command (thd=0x907e5a8) at sql_parse.cc:736 #6 0x081d2301 in handle_one_connection (arg=0x0) at sql_connect.cc:1115 #7 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #8 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 4 (Thread -1273492592 (LWP 1331)): #0 0x00914402 in __kernel_vsyscall () #1 0x00de6e2b in __read_nocancel () from /lib/i686/nosegneg/libpthread.so.0 #2 0x084073c6 in vio_read (vio=0xfffffe00, buf=0x90c2e60 "\001", size=4) at viosocket.c:44 #3 0x081c39dc in my_real_read (net=0x90bcd88, complen=0xb4180358) at net_serv.cc:815 #4 0x081c36ae in my_net_read (net=0x90bcd88) at net_serv.cc:996 #5 0x081d3d7e in do_command (thd=0x90bcd10) at sql_parse.cc:736 #6 0x081d2301 in handle_one_connection (arg=0x0) at sql_connect.cc:1115 #7 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #8 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 3 (Thread -1274070128 (LWP 26892)): #0 0x00914402 in __kernel_vsyscall () #1 0x00de4206 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/nosegneg/libpthread.so.0 #2 0x08204c6b in open_table (thd=0xb6a06738, table_list=0x9096d48, mem_root=0xb40f20d0, refresh=0xb40f20bd, flags=0) at sql_base.cc:2141 #3 0x08205ecb in open_tables (thd=0xb6a06738, start=0xb40f2144, counter=0xb40f2128, flags=0) at sql_base.cc:4513 #4 0x082060ee in open_and_lock_tables_derived (thd=0xb6a06738, tables=0x9096d48, derived=true) at sql_base.cc:4913 #5 0x081de695 in execute_sqlcom_select (thd=0xb6a06738, all_tables=0x9096d48) at mysql_priv.h:1528 #6 0x081da4ab in mysql_execute_command (thd=0xb6a06738) at sql_parse.cc:2073 #7 0x081db911 in mysql_parse (thd=0xb6a06738, inBuf=0xb40f2d38 "", length=3020893216, found_semicolon=0xb40f2d38) at sql_parse.cc:5645 #8 0x081d424e in dispatch_command (command=COM_QUERY, thd=0xb6a06738, packet=0xb6a0c1a1 "select * from `t1` limit 1", packet_length=3020893496) at sql_parse.cc:1137 #9 0x081d3dd3 in do_command (thd=0xb6a06738) at sql_parse.cc:794 #10 0x081d2301 in handle_one_connection (arg=0x0) at sql_connect.cc:1115 #11 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #12 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 2 (Thread -1272489072 (LWP 26893)): #0 0x00914402 in __kernel_vsyscall () #1 0x00de4206 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/nosegneg/libpthread.so.0 #2 0x081c71f9 in wait_if_global_read_lock (thd=0xb6a00570, abort_on_refresh=true, is_not_commit=true) at lock.cc:1509 #3 0x081c62fd in mysql_lock_tables (thd=0xb6a00570, tables=0x90a46e8, count=1, flags=4, need_reopen=0xb427443b) at lock.cc:224 #4 0x082066c7 in lock_tables (thd=0xb6a00570, tables=0x90a3d28, count=71027, need_reopen=0xb427443b) at sql_base.cc:5213 #5 0x08240fc1 in mysql_update (thd=0xb6a00570, table_list=0x90a3d28, fields=@0xb6a01938, values=@0xb6a01b54, conds=0x90a45f8, order_num=0, order=0x0, limit=18446744073709551615, handle_duplicates=DUP_ERROR, ignore=true) at sql_update.cc:223 #6 0x081d60f9 in mysql_execute_command (thd=0xb6a00570) at sql_parse.cc:2841 #7 0x081db911 in mysql_parse (thd=0xb6a00570, inBuf=0xb4274d38 "", length=3022474272, found_semicolon=0xb4274d38) at sql_parse.cc:5645 #8 0x081d424e in dispatch_command (command=COM_QUERY, thd=0xb6a00570, packet=0xb6a025e9 "update ignore `t1` set `id`=if(abs(-1257833935)%100<20,null,'-9449') where `id` = '-18'", packet_length=3022474552) at sql_parse.cc:1137 #9 0x081d3dd3 in do_command (thd=0xb6a00570) at sql_parse.cc:794 #10 0x081d2301 in handle_one_connection (arg=0x0) at sql_connect.cc:1115 #11 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 #12 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 Thread 1 (Thread -1208977728 (LWP 1298)): #0 0x00914402 in __kernel_vsyscall () #1 0x00d59ea1 in ___newselect_nocancel () from /lib/i686/nosegneg/libc.so.6 #2 0x081cae73 in handle_connections_sockets (arg=0x0) at mysqld.cc:4881 #3 0x081ca9ef in main (argc=6, argv=0x1) at mysqld.cc:4380 #0 0x00914402 in __kernel_vsyscall () (gdb) (gdb) (gdb) thread 2 [Switching to thread 2 (Thread -1272489072 (LWP 26893))]#0 0x00914402 in __kernel_vsyscall () (gdb) bt full #0 0x00914402 in __kernel_vsyscall () No symbol table info available. #1 0x00de4206 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/nosegneg/libpthread.so.0 No symbol table info available. #2 0x081c71f9 in wait_if_global_read_lock (thd=0xb6a00570, abort_on_refresh=true, is_not_commit=true) at lock.cc:1509 old_message = 0x0 result = false need_exit_cond = true #3 0x081c62fd in mysql_lock_tables (thd=0xb6a00570, tables=0x90a46e8, count=1, flags=4, need_reopen=0xb427443b) at lock.cc:224 sql_lock = (MYSQL_LOCK *) 0x8c82ff0 write_lock_used = (TABLE *) 0x90a5c08 rc = 1 #4 0x082066c7 in lock_tables (thd=0xb6a00570, tables=0x90a3d28, count=71027, need_reopen=0xb427443b) at sql_base.cc:5213 start = (TABLE **) 0x90a46e8 ptr = (TABLE **) 0x1 table = (TABLE_LIST *) 0x0 #5 0x08240fc1 in mysql_update (thd=0xb6a00570, table_list=0x90a3d28, fields=@0xb6a01938, values=@0xb6a01b54, conds=0x90a45f8, order_num=0, order=0x0, limit=18446744073709551615, handle_duplicates=DUP_ERROR, ignore=true) at sql_update.cc:223 using_limit = false used_key_is_modified = 132 transactional_table = 60 will_batch = 80 res = -4 error = 13336 loc_error = -1272494716 used_index = 64 dup_key_found = 0 need_sort = true want_privilege = 3022472580 table_count = 1 updated = 12981419728810541056 found = 4294967299 table = (TABLE *) 0xb6a00570 select = (SQL_SELECT *) 0x1f71 info = {table = 0x1330, file = 0x2, forms = 0x3, read_record = 0xb6a00000, thd = 0x851f1d0, select = 0x0, cache_records = 1, ref_length = 151665960, struct_length = 3063940464, reclength = 0, rec_cache_size = 3022472552, error_offset = 136161646, index = 3063940464, ref_pos = 0x4
, record = 0x90a3d28 "", rec_buf = 0x0, cache = 0x1
, cache_pos = 0x0, cache_end = 0x0, read_positions = 0x0, io_cache = 0xb6a08110, print_error = 80, ignore_not_found_rows = 60} select_lex = (SELECT_LEX *) 0xb6a018a4 need_reopen = false id = 12981419478429943172 all_fields = { = { = {}, first = 0x866b614, last = 0xb42744f0, elements = 0}, } killed_status = 3063943868 #6 0x081d60f9 in mysql_execute_command (thd=0xb6a00570) at sql_parse.cc:2841 sv = (SAVEPOINT **) 0xb6a01938 newsv = (SAVEPOINT *) 0xb6a018a4 res = 0 need_start_waiting = false up_result = -4 lex = (LEX *) 0xb6a015d0 select_lex = (SELECT_LEX *) 0xb6a018a4 first_table = (TABLE_LIST *) 0x90a3d28 all_tables = (TABLE_LIST *) 0x90a3d28 unit = (SELECT_LEX_UNIT *) 0xb6a0162c #7 0x081db911 in mysql_parse (thd=0xb6a00570, inBuf=0xb4274d38 "", length=3022474272, found_semicolon=0xb4274d38) at sql_parse.cc:5645 lex = (LEX *) 0xb6a015d0 lip = {m_thd = 0xb6a00570, yylineno = 1, yytoklen = 3, yylval = 0xb4274ba0, m_ptr = 0x90a3c58 "unlock tables", m_tok_start = 0x90a3c58 "unlock tables", m_tok_end = 0x90a3c58 "unlock tables", m_end_of_query = 0x90a3c57 "", m_tok_start_prev = 0x90a3c57 "", m_buf = 0x90a3c00 "update ignore `t1` set `id`=if(abs(-1257833935)%100<20,null,'-9449') where `id` = '-18'", m_buf_length = 87, m_echo = true, m_cpp_buf = 0x90a3ca0 "update ignore `t1` set `id`=if(abs(-1257833935)%100<20,null,'-9449') where `id` = '-18'", m_cpp_ptr = 0x90a3cf7 "", m_cpp_tok_start = 0x90a3cf7 "", m_cpp_tok_start_prev = 0x90a3cf7 "", m_cpp_tok_end = 0x90a3cf7 "", m_body_utf8 = 0x0, m_body_utf8_ptr = 0xde6b10 "SQR\213\\$\024ð\203+\001t\034¹\001", m_cpp_utf8_processed_ptr = 0x0, next_state = MY_LEX_END, found_semicolon = 0x0, tok_bitmap = 63 '?', ignore_space = false, stmt_prepare_mode = false, in_comment = NO_COMMENT, m_cpp_text_start = 0x90a3cf3 "-18'", m_cpp_text_end = 0x90a3cf6 "'", m_underscore_cs = 0x0} err = 252 #8 0x081d424e in dispatch_command (command=COM_QUERY, thd=0xb6a00570, packet=0xb6a025e9 "update ignore `t1` set `id`=if(abs(-1257833935)%100<20,null,'-9449') where `id` = '-18'", packet_length=3022474552) at sql_parse.cc:1137 packet_end = 0x90a3c57 "" end_of_stmt = 0x0 net = (NET *) 0xb6a005e8 error = false #9 0x081d3dd3 in do_command (thd=0xb6a00570) at sql_parse.cc:794 return_value = 252 packet = 0xb6a025e8 "\003update ignore `t1` set `id`=if(abs(-1257833935)%100<20,null,'-9449') where `id` = '-18'" packet_length = 88 net = (NET *) 0xb6a005e8 command = COM_QUERY #10 0x081d2301 in handle_one_connection (arg=0x0) at sql_connect.cc:1115 net = (NET *) 0xb6a005e8 thd = (class THD *) 0xb6a00570 launch_time = 0 #11 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 No symbol table info available. #12 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 No symbol table info available. (gdb) (gdb) thread 3 [Switching to thread 3 (Thread -1274070128 (LWP 26892))]#0 0x00914402 in __kernel_vsyscall () (gdb) bt full #0 0x00914402 in __kernel_vsyscall () No symbol table info available. #1 0x00de4206 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/nosegneg/libpthread.so.0 No symbol table info available. #2 0x08204c6b in open_table (thd=0xb6a06738, table_list=0x9096d48, mem_root=0xb40f20d0, refresh=0xb40f20bd, flags=0) at sql_base.cc:2141 error = -4 table = (TABLE *) 0x90a5c08 key = "test\000t1\000\000\000\000\000Ýb\000\000ØúÇ\b8g ¶\t\000\000\000 \037\017´\b\037\017´08Þ\000h\037\017´©\216/\b8g ¶ôïÜ\000 \001Ý\000ø\n\b\tX\037\017´@ÃÏ\000 \001Ý\000ø\n\b\t°ÏÇ\bðÏÇ\b0ÐÇ\bð\n\b\tpÏÇ\b¡\215Ï\000\210\037\017´ø\n\b\t\000\000\000\000\210\aU\bx\037\017´Nß@\bø\n\b\t\210\aU\b\000\004Ý\000ç\037\017´X\004Ý\000x×(\bX\001Ý\000P\001Ý\000ø\n\b\t¸o\t\tq\037\000\000\037l\t\t\003\000\000\000\001\000\000\000Ø\037\017´\023l\t\t ,\017´\005\000\000\000"... key_length = 8 alias = 0x9096d40 "t1" state = 0 #3 0x08205ecb in open_tables (thd=0xb6a06738, start=0xb40f2144, counter=0xb40f2128, flags=0) at sql_base.cc:4513 tables = (TABLE_LIST *) 0x9096d48 refresh = false result = 0 new_frm_mem = {free = 0x909d668, used = 0x0, pre_alloc = 0x909d668, min_malloc = 32, block_size = 7996, block_num = 4, first_block_usage = 0, error_handler = 0x81873f4 } query_tables_last_own = (TABLE_LIST **) 0x0 safe_to_ignore_table = false #4 0x082060ee in open_and_lock_tables_derived (thd=0xb6a06738, tables=0x9096d48, derived=true) at sql_base.cc:4913 counter = 1 need_reopen = false #5 0x081de695 in execute_sqlcom_select (thd=0xb6a06738, all_tables=0x9096d48) at mysql_priv.h:1528 param = (SELECT_LEX *) 0xb6a07a6c lex = (LEX *) 0xb6a07798 result = (class select_result *) 0x0 res = false #6 0x081da4ab in mysql_execute_command (thd=0xb6a06738) at sql_parse.cc:2073 res = 0 need_start_waiting = false up_result = -4 lex = (LEX *) 0xb6a07798 select_lex = (SELECT_LEX *) 0xb6a07a6c first_table = (TABLE_LIST *) 0x9096d48 all_tables = (TABLE_LIST *) 0x9096d48 unit = (SELECT_LEX_UNIT *) 0xb6a077f4 #7 0x081db911 in mysql_parse (thd=0xb6a06738, inBuf=0xb40f2d38 "", length=3020893216, found_semicolon=0xb40f2d38) at sql_parse.cc:5645 lex = (LEX *) 0xb6a07798 lip = {m_thd = 0xb6a06738, yylineno = 1, yytoklen = 1, yylval = 0xb40f2ba0, m_ptr = 0x9096c1b " = '6934'", m_tok_start = 0x9096c1b " = '6934'", m_tok_end = 0x9096c1b " = '6934'", m_end_of_query = 0x9096c1a "", m_tok_start_prev = 0x9096c1a "", m_buf = 0x9096c00 "select * from `t1` limit 1", m_buf_length = 26, m_echo = true, m_cpp_buf = 0x9096c60 "select * from `t1` limit 1", m_cpp_ptr = 0x9096c7a "", m_cpp_tok_start = 0x9096c7a "", m_cpp_tok_start_prev = 0x9096c7a "", m_cpp_tok_end = 0x9096c7a "", m_body_utf8 = 0x0, m_body_utf8_ptr = 0xde6b10 "SQR\213\\$\024ð\203+\001t\034¹\001", m_cpp_utf8_processed_ptr = 0x0, next_state = MY_LEX_END, found_semicolon = 0x0, tok_bitmap = 168 '¨', ignore_space = false, stmt_prepare_mode = false, in_comment = NO_COMMENT, m_cpp_text_start = 0x9096c79 "1", m_cpp_text_end = 0x9096c7a "", m_underscore_cs = 0x0} err = 252 #8 0x081d424e in dispatch_command (command=COM_QUERY, thd=0xb6a06738, packet=0xb6a0c1a1 "select * from `t1` limit 1", packet_length=3020893496) at sql_parse.cc:1137 packet_end = 0x9096c1a "" end_of_stmt = 0x0 net = (NET *) 0xb6a067b0 error = false #9 0x081d3dd3 in do_command (thd=0xb6a06738) at sql_parse.cc:794 return_value = 252 packet = 0xb6a0c1a0 "\003select * from `t1` limit 1" packet_length = 27 net = (NET *) 0xb6a067b0 command = COM_QUERY #10 0x081d2301 in handle_one_connection (arg=0x0) at sql_connect.cc:1115 net = (NET *) 0xb6a067b0 thd = (class THD *) 0xb6a06738 launch_time = 0 #11 0x00de0402 in start_thread () from /lib/i686/nosegneg/libpthread.so.0 No symbol table info available. #12 0x00d612ae in clone () from /lib/i686/nosegneg/libc.so.6 No symbol table info available. original testcase: gypsy --generate-queryfile=0 --queryfile=1.sql --threads=2 --shuffle-queries=1 --duration=60000 --host=192.168.250.4 i|1|set global concurrent_insert=2| i|1|drop table if exists `t1`| i|1|CREATE TABLE `t1` ( `id` varchar(255) DEFAULT NULL, KEY `id` (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1| n|5|insert ignore into `t1` set `id`=if(abs(?)%100<20,null,'?')|int,smallint n|5|insert delayed into `t1` set `id`=if(abs(?)%100<20,null,'?')|int,smallint n|1|start transaction| n|2|delete from `t1` where `id` = '?'|smallint n|2|select * from `t1` where `id` = '?'|smallint n|2|update ignore `t1` set `id`=if(abs(?)%100<20,null,'?') where `id` = '?'|int,smallint,smallint n|1|commit| n|1|select * from `t1` limit 1| p|2|select * from `t1` limit 1| n|1|lock table t1 write| n|1|unlock tables| n|1|flush tables| n|1|flush tables with read lock| n|1|kill connection| n|1|check table t1|