== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:11:04 (1787551864)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.9462 s, 7.5 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-ffff8ff68abdb000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.257503
Iter 1/10: OSS cache speed: 0.295338
Iter 1/10: ladvise speed: 0.267831
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.319416
Iter 2/10: OSS cache speed: 0.32645
Iter 2/10: ladvise speed: 0.3321
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.335124
Iter 3/10: OSS cache speed: 0.266541
Iter 3/10: ladvise speed: 0.293686
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.314542
Iter 4/10: OSS cache speed: 0.379125
Iter 4/10: ladvise speed: 0.350926
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.36096
Iter 5/10: OSS cache speed: 0.295243
Iter 5/10: ladvise speed: 0.309011
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.290298
Iter 6/10: OSS cache speed: 0.344762
Iter 6/10: ladvise speed: 0.314898
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.319189
Iter 7/10: OSS cache speed: 0.264085
Iter 7/10: ladvise speed: 0.332234
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.344114
Iter 8/10: OSS cache speed: 0.309258
Iter 8/10: ladvise speed: 0.301253
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.295163
Iter 9/10: OSS cache speed: 0.301471
Iter 9/10: ladvise speed: 0.277312
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.276391
Iter 10/10: OSS cache speed: 0.330837
Iter 10/10: ladvise speed: 0.350881
Average uncached read: .31
Average speedup with OSS cached read:  .31 = +0%
Average speedup with ladvise willread:  .31 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0