== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:41:40 (1712137300)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.30159 s, 45.6 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: 2.70789
Iter 1/10: OSS cache speed: 2.77689
Iter 1/10: ladvise speed: 2.79785
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.62739
Iter 2/10: OSS cache speed: 2.72859
Iter 2/10: ladvise speed: 2.80715
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.64792
Iter 3/10: OSS cache speed: 2.75885
Iter 3/10: ladvise speed: 2.66861
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.258613
Iter 4/10: OSS cache speed: 1.92046
Iter 4/10: ladvise speed: 0.852687
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.386777
Iter 5/10: OSS cache speed: 0.264595
Iter 5/10: ladvise speed: 0.17261
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.510013
Iter 6/10: OSS cache speed: 0.322528
Iter 6/10: ladvise speed: 0.356588
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.667549
Iter 7/10: OSS cache speed: 1.34378
Iter 7/10: ladvise speed: 0.776876
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.41843
Iter 8/10: OSS cache speed: 1.75648
Iter 8/10: ladvise speed: 1.24379
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.5653
Iter 9/10: OSS cache speed: 1.4725
Iter 9/10: ladvise speed: 1.85902
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.75249
Iter 10/10: OSS cache speed: 1.86278
Iter 10/10: ladvise speed: 2.18174
Average uncached read: 1.45
Average speedup with OSS cached read: 1.72 = +18.62%
Average speedup with ladvise willread: 1.57 = +8.27%
Speedup with OSS cached read less than 20%, got 18.62%. Skipping ladvise willread check.
fail_loc=0