== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:31:38 (1713468698)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.55173 s, 41.1 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: 2.86683
Iter 1/10: OSS cache speed: 2.79462
Iter 1/10: ladvise speed: 2.84646
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.33266
Iter 2/10: OSS cache speed: 2.30811
Iter 2/10: ladvise speed: 2.69387
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.38921
Iter 3/10: OSS cache speed: 2.56739
Iter 3/10: ladvise speed: 2.35518
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.28617
Iter 4/10: OSS cache speed: 2.26686
Iter 4/10: ladvise speed: 1.99845
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.98882
Iter 5/10: OSS cache speed: 2.03793
Iter 5/10: ladvise speed: 1.58199
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.56082
Iter 6/10: OSS cache speed: 1.49886
Iter 6/10: ladvise speed: 1.74492
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.86083
Iter 7/10: OSS cache speed: 2.16526
Iter 7/10: ladvise speed: 1.43162
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.50673
Iter 8/10: OSS cache speed: 2.01076
Iter 8/10: ladvise speed: 2.16061
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.89122
Iter 9/10: OSS cache speed: 1.96616
Iter 9/10: ladvise speed: 1.87156
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.04415
Iter 10/10: OSS cache speed: 2.06448
Iter 10/10: ladvise speed: 2.34327
Average uncached read: 2.07
Average speedup with OSS cached read: 2.16 = +4.34%
Average speedup with ladvise willread: 2.10 = +1.44%
Speedup with OSS cached read less than 20%, got 4.34%. Skipping ladvise willread check.
fail_loc=0