== sanity test 255a: check 'lfs ladvise -a willread' ===== 20:14:13 (1781223253)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 16.0656 s, 6.5 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-ffff985a471b0000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.344127
Iter 1/10: OSS cache speed: 0.394078
Iter 1/10: ladvise speed: 0.398193
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.402677
Iter 2/10: OSS cache speed: 0.302481
Iter 2/10: ladvise speed: 0.412814
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.47768
Iter 3/10: OSS cache speed: 0.459675
Iter 3/10: ladvise speed: 0.376916
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.324036
Iter 4/10: OSS cache speed: 0.302441
Iter 4/10: ladvise speed: 0.344904
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.463409
Iter 5/10: OSS cache speed: 0.466076
Iter 5/10: ladvise speed: 0.389118
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.333109
Iter 6/10: OSS cache speed: 0.382131
Iter 6/10: ladvise speed: 0.397125
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.352116
Iter 7/10: OSS cache speed: 0.331656
Iter 7/10: ladvise speed: 0.373858
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.267177
Iter 8/10: OSS cache speed: 0.373004
Iter 8/10: ladvise speed: 0.324697
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.407201
Iter 9/10: OSS cache speed: 0.359511
Iter 9/10: ladvise speed: 0.375652
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.382871
Iter 10/10: OSS cache speed: 0.36377
Iter 10/10: ladvise speed: 0.349915
Average uncached read: .37
Average speedup with OSS cached read:  .37 = +0%
Average speedup with ladvise willread:  .37 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0