== sanity test 255a: check 'lfs ladvise -a willread' ===== 20:33:46 (1713486826)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.95097 s, 35.5 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
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.9331
Iter 1/10: OSS cache speed: 3.07346
Iter 1/10: ladvise speed: 3.23247
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.97551
Iter 2/10: OSS cache speed: 3.29912
Iter 2/10: ladvise speed: 3.33222
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.70525
Iter 3/10: OSS cache speed: 3.33357
Iter 3/10: ladvise speed: 3.34902
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.81757
Iter 4/10: OSS cache speed: 2.93342
Iter 4/10: ladvise speed: 3.39503
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 3.07808
Iter 5/10: OSS cache speed: 3.40719
Iter 5/10: ladvise speed: 3.34995
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 3.08917
Iter 6/10: OSS cache speed: 3.26624
Iter 6/10: ladvise speed: 3.25224
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 3.02573
Iter 7/10: OSS cache speed: 3.41098
Iter 7/10: ladvise speed: 3.41088
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 3.08295
Iter 8/10: OSS cache speed: 3.34724
Iter 8/10: ladvise speed: 3.39771
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.95047
Iter 9/10: OSS cache speed: 3.41034
Iter 9/10: ladvise speed: 3.39443
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 3.18111
Iter 10/10: OSS cache speed: 3.43649
Iter 10/10: ladvise speed: 2.65924
Average uncached read: 2.98
Average speedup with OSS cached read: 3.29 = +10.40%
Average speedup with ladvise willread: 3.27 = +9.73%
Speedup with OSS cached read less than 20%, got 10.40%. Skipping ladvise willread check.
fail_loc=0