timing_stress_split_9=1

(gdb) where
#0  0x00007f50cfc367a3 in select () from /lib64/libc.so.6
#1  0x000000000045b147 in __wt_sleep (seconds=0, micro_seconds=13340) at ../src/os_posix/os_sleep.c:32
#2  0x000000000050deb8 in __wt_timing_stress (session=0x7f50d13281b0, flag=1024)
    at ../src/include/misc.i:272
#3  0x0000000000510886 in __wt_row_search (session=0x7f50d13281b0, srch_key=0x2248f50, leaf=0x0, 
    cbt=0x2248e50, insert=false, restore=false) at ../src/btree/row_srch.c:435
#4  0x00000000005965c3 in __cursor_row_search (session=0x7f50d13281b0, cbt=0x2248e50, leaf=0x0, 
    insert=false) at ../src/btree/bt_cursor.c:385
#5  0x0000000000596c2e in __wt_btcur_search (cbt=0x2248e50) at ../src/btree/bt_cursor.c:530
#6  0x000000000052f07c in __curfile_search (cursor=0x2248e50) at ../src/cursor/cur_file.c:200
#7  0x000000000040a07c in read_row_worker (cursor=0x2248e50, keyno=613197, key=0x7ffc6730f190, 
    value=0x7ffc6730f160, sn=false) at ../../../test/format/ops.c:1252
#8  0x0000000000409eee in wts_read_scan () at ../../../test/format/ops.c:1202
#9  0x000000000040d89c in main (argc=4, argv=0x7ffc6730f398) at ../../../test/format/t.c:207
(gdb) f 8
#8  0x0000000000409eee in wts_read_scan () at ../../../test/format/ops.c:1202
1202			switch (ret = read_row_worker(
(gdb) p keyno
$14 = 613197
(gdb) p g.key_cnt
$11 = 1000000