== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:59:30 (1713077970)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.313 s, 45.3 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: 1.5592
Iter 1/10: OSS cache speed: 1.73668
Iter 1/10: ladvise speed: 1.81156
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.57714
Iter 2/10: OSS cache speed: 1.77282
Iter 2/10: ladvise speed: 1.81252
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.56277
Iter 3/10: OSS cache speed: 1.80197
Iter 3/10: ladvise speed: 1.76366
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.44607
Iter 4/10: OSS cache speed: 1.70532
Iter 4/10: ladvise speed: 1.75107
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.47854
Iter 5/10: OSS cache speed: 1.6905
Iter 5/10: ladvise speed: 1.81171
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.63795
Iter 6/10: OSS cache speed: 2.0757
Iter 6/10: ladvise speed: 1.76015
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.58216
Iter 7/10: OSS cache speed: 1.90491
Iter 7/10: ladvise speed: 2.49121
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.75226
Iter 8/10: OSS cache speed: 1.71096
Iter 8/10: ladvise speed: 1.90219
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.46175
Iter 9/10: OSS cache speed: 1.71392
Iter 9/10: ladvise speed: 1.70338
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.43909
Iter 10/10: OSS cache speed: 1.77859
Iter 10/10: ladvise speed: 1.75953
Average uncached read: 1.54
Average speedup with OSS cached read: 1.78 = +15.58%
Average speedup with ladvise willread: 1.85 = +20.12%
Speedup with OSS cached read less than 20%, got 15.58%. Skipping ladvise willread check.
fail_loc=0