LSM throttling bug

(gdb) print *lsm_tree

...

  throttle_sleep = 14038831697358, chunk_fill_ms = 3074457346313,

...

  chunk_alloc = 160, nchunks = 7, last = 30, old_chunks = 0x7f297d0c2ce0,

  old_alloc = 80, nold_chunks = 0, flags = 28}

(gdb) print *lsm_tree->chunk[0]

$4 = {id = 10, generation = 1, uri = 0x7f297d051040 "file:wt-000010.lsm",

  bloom_uri = 0x0, count = 99248, create_ts = {tv_sec = 1381426119,

    tv_nsec = 928171662}, refcnt = 0, txnid_max = 0, flags = 20}

(gdb) print *lsm_tree->chunk[1]

$5 = {id = 20, generation = 1, uri = 0x7f291cc09180 "file:wt-000020.lsm",

  bloom_uri = 0x7f297d132ca0 "file:wt-000020.bf", count = 115791, create_ts = {

    tv_sec = 1381426132, tv_nsec = 460307811}, refcnt = 0, txnid_max = 0,

  flags = 21}

(gdb) print *lsm_tree->chunk[2]

$6 = {id = 29, generation = 1, uri = 0x7f298c4251c0 "file:wt-000029.lsm",

  bloom_uri = 0x7f297d0b6ac0 "file:wt-000029.bf", count = 79525, create_ts = {

    tv_sec = 1381426141, tv_nsec = 677431242}, refcnt = 0, txnid_max = 0,

  flags = 21}

(gdb) print *lsm_tree->chunk[3]

$7 = {id = 26, generation = 0, uri = 0x7f296f416a40 "file:wt-000026.lsm",

  bloom_uri = 0x0, count = 25180, create_ts = {tv_sec = 1381426137,

    tv_nsec = 278737985}, refcnt = 0, txnid_max = 307242, flags = 0}

(gdb) print *lsm_tree->chunk[4]

$8 = {id = 27, generation = 0, uri = 0x7f291e1434a0 "file:wt-000027.lsm",

  bloom_uri = 0x0, count = 25368, create_ts = {tv_sec = 1381426138,

    tv_nsec = 465214936}, refcnt = 0, txnid_max = 314017, flags = 0}

(gdb) print *lsm_tree->chunk[5]

$9 = {id = 28, generation = 0, uri = 0x7f291e1433c0 "file:wt-000028.lsm",

  bloom_uri = 0x0, count = 15186, create_ts = {tv_sec = 1381426141,

    tv_nsec = 670444784}, refcnt = 0, txnid_max = 325815, flags = 0}

(gdb) print *lsm_tree->chunk[6]

$10 = {id = 30, generation = 0, uri = 0x7f29343e70a0 "file:wt-000030.lsm",

  bloom_uri = 0x0, count = 1800, create_ts = {tv_sec = 1381426144,

    tv_nsec = 19573522}, refcnt = 0, txnid_max = 327238, flags = 0}