== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:31:21 (1782225081)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.2009 s, 7.9 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-ffff93e905307000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.272688
Iter 1/10: OSS cache speed: 0.290776
Iter 1/10: ladvise speed: 0.313509
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.271414
Iter 2/10: OSS cache speed: 0.323923
Iter 2/10: ladvise speed: 0.315286
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.318325
Iter 3/10: OSS cache speed: 0.31677
Iter 3/10: ladvise speed: 0.271887
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.328219
Iter 4/10: OSS cache speed: 0.321195
Iter 4/10: ladvise speed: 0.332962
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.333937
Iter 5/10: OSS cache speed: 0.290069
Iter 5/10: ladvise speed: 0.326587
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.325382
Iter 6/10: OSS cache speed: 0.294142
Iter 6/10: ladvise speed: 0.313567
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.317731
Iter 7/10: OSS cache speed: 0.30423
Iter 7/10: ladvise speed: 0.291515
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.277703
Iter 8/10: OSS cache speed: 0.293424
Iter 8/10: ladvise speed: 0.314522
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.291506
Iter 9/10: OSS cache speed: 0.288001
Iter 9/10: ladvise speed: 0.313102
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.311579
Iter 10/10: OSS cache speed: 0.295173
Iter 10/10: ladvise speed: 0.295203
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