== sanity test 255a: check 'lfs ladvise -a willread' ===== 03:11:06 (1787469066)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.1111 s, 8.0 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-ffffa083d89a0000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.325967
Iter 1/10: OSS cache speed: 0.330865
Iter 1/10: ladvise speed: 0.327201
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.262303
Iter 2/10: OSS cache speed: 0.316591
Iter 2/10: ladvise speed: 0.304466
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.346062
Iter 3/10: OSS cache speed: 0.366849
Iter 3/10: ladvise speed: 0.308978
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.333215
Iter 4/10: OSS cache speed: 0.309281
Iter 4/10: ladvise speed: 0.310912
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.341657
Iter 5/10: OSS cache speed: 0.35691
Iter 5/10: ladvise speed: 0.331165
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.305919
Iter 6/10: OSS cache speed: 0.379049
Iter 6/10: ladvise speed: 0.351905
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.331358
Iter 7/10: OSS cache speed: 0.326632
Iter 7/10: ladvise speed: 0.323383
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.324891
Iter 8/10: OSS cache speed: 0.272813
Iter 8/10: ladvise speed: 0.349343
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.343118
Iter 9/10: OSS cache speed: 0.332914
Iter 9/10: ladvise speed: 0.32134
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.32492
Iter 10/10: OSS cache speed: 0.302944
Iter 10/10: ladvise speed: 0.338005
Average uncached read: .32
Average speedup with OSS cached read:  .32 = +0%
Average speedup with ladvise willread:  .32 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0