== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:02:48 (1789138968)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.639 s, 7.7 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-ffff9857c2f4f000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.279635
Iter 1/10: OSS cache speed: 0.29845
Iter 1/10: ladvise speed: 0.311509
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.313734
Iter 2/10: OSS cache speed: 0.261683
Iter 2/10: ladvise speed: 0.262739
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.290835
Iter 3/10: OSS cache speed: 0.300203
Iter 3/10: ladvise speed: 0.304391
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.30987
Iter 4/10: OSS cache speed: 0.29574
Iter 4/10: ladvise speed: 0.280186
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.271671
Iter 5/10: OSS cache speed: 0.296675
Iter 5/10: ladvise speed: 0.290068
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.350195
Iter 6/10: OSS cache speed: 0.334772
Iter 6/10: ladvise speed: 0.339817
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.324932
Iter 7/10: OSS cache speed: 0.325199
Iter 7/10: ladvise speed: 0.302562
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.343978
Iter 8/10: OSS cache speed: 0.322663
Iter 8/10: ladvise speed: 0.321106
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.285531
Iter 9/10: OSS cache speed: 0.332772
Iter 9/10: ladvise speed: 0.278311
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.285332
Iter 10/10: OSS cache speed: 0.264983
Iter 10/10: ladvise speed: 0.328066
Average uncached read: .30
Average speedup with OSS cached read:  .30 = +0%
Average speedup with ladvise willread:  .30 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0