== sanity test 255a: check 'lfs ladvise -a willread' ===== 16:12:37 (1775765557)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 10.273 s, 10.2 MB/s
ladvise: range [2, 1] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: range [2, 2] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: conflicting arguments of -l and -e
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

Synchronous ladvise should wait
fail_val=8
fail_loc=0x237
Asynchronous ladvise shouldn't wait
llite.lustre-ffff8dbc42c6f000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.33083
Iter 1/10: OSS cache speed: 0.333941
Iter 1/10: ladvise speed: 0.303461
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.3252
Iter 2/10: OSS cache speed: 0.305007
Iter 2/10: ladvise speed: 0.316255
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.272464
Iter 3/10: OSS cache speed: 0.289249
Iter 3/10: ladvise speed: 0.307441
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.276057
Iter 4/10: OSS cache speed: 0.295769
Iter 4/10: ladvise speed: 0.308265
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.308563
Iter 5/10: OSS cache speed: 0.320687
Iter 5/10: ladvise speed: 0.32079
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.311962
Iter 6/10: OSS cache speed: 0.283437
Iter 6/10: ladvise speed: 0.329535
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.28719
Iter 7/10: OSS cache speed: 0.317603
Iter 7/10: ladvise speed: 0.294468
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.305618
Iter 8/10: OSS cache speed: 0.327854
Iter 8/10: ladvise speed: 0.351632
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.332209
Iter 9/10: OSS cache speed: 0.305956
Iter 9/10: ladvise speed: 0.324264
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.305283
Iter 10/10: OSS cache speed: 0.297973
Iter 10/10: ladvise speed: 0.302869
Average uncached read: .30
Average speedup with OSS cached read:  .30 = +0%
Average speedup with ladvise willread:  .31 = +3%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0