== sanity test 255a: check 'lfs ladvise -a willread' ===== 12:09:41 (1711987781)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 4.36613 s, 24.0 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-ffff8800b6075800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.194216
Iter 1/10: OSS cache speed: 0.0494439
Iter 1/10: ladvise speed: 0.0413503
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.0737226
Iter 2/10: OSS cache speed: 0.0245534
Iter 2/10: ladvise speed: 0.275049
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.148195
Iter 3/10: OSS cache speed: 0.14002
Iter 3/10: ladvise speed: 0.197473
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.116905
Iter 4/10: OSS cache speed: 0.056996
Iter 4/10: ladvise speed: 0.312922
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.142945
Iter 5/10: OSS cache speed: 0.131359
Iter 5/10: ladvise speed: 0.213221
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.376954
Iter 6/10: OSS cache speed: 0.902598
Iter 6/10: ladvise speed: 1.05934
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.706626
Iter 7/10: OSS cache speed: 0.489982
Iter 7/10: ladvise speed: 0.282049
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.416768
Iter 8/10: OSS cache speed: 0.409899
Iter 8/10: ladvise speed: 0.919527
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.195751
Iter 9/10: OSS cache speed: 0.164194
Iter 9/10: ladvise speed: 0.423375
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.662604
Iter 10/10: OSS cache speed: 0.47162
Iter 10/10: ladvise speed: 0.560534
Average uncached read: .30
Average speedup with OSS cached read: .28 = +-6.66%
Average speedup with ladvise willread: .42 = +40.00%
Speedup with OSS cached read less than 20%, got -6.66%. Skipping ladvise willread check.
fail_loc=0