== sanity test 255a: check 'lfs ladvise -a willread' ===== 13:06:51 (1763489211)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 7.67771 s, 13.7 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-ffff963d0557d000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.552944
Iter 1/10: OSS cache speed: 0.675828
Iter 1/10: ladvise speed: 0.735408
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.765147
Iter 2/10: OSS cache speed: 0.867173
Iter 2/10: ladvise speed: 1.02004
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.957716
Iter 3/10: OSS cache speed: 0.985652
Iter 3/10: ladvise speed: 1.06946
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.847937
Iter 4/10: OSS cache speed: 1.17477
Iter 4/10: ladvise speed: 1.01379
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.05418
Iter 5/10: OSS cache speed: 1.22499
Iter 5/10: ladvise speed: 1.24831
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.03058
Iter 6/10: OSS cache speed: 1.29453
Iter 6/10: ladvise speed: 1.35705
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.0499
Iter 7/10: OSS cache speed: 1.14539
Iter 7/10: ladvise speed: 1.39847
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.34029
Iter 8/10: OSS cache speed: 2.04819
Iter 8/10: ladvise speed: 2.17343
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.78395
Iter 9/10: OSS cache speed: 1.78862
Iter 9/10: ladvise speed: 1.1029
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.21561
Iter 10/10: OSS cache speed: 0.817306
Iter 10/10: ladvise speed: 0.890099
Average uncached read: 1.05
Average speedup with OSS cached read:  1.20 = +14%
Average speedup with ladvise willread:  1.20 = +14%
Speedup with OSS cached read less than 20%,  got 14%. Skipping ladvise willread check.
fail_loc=0