== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:41:46 (1712137306)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.76305 s, 37.9 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: 2.82143
Iter 1/10: OSS cache speed: 2.86357
Iter 1/10: ladvise speed: 3.46919
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.96732
Iter 2/10: OSS cache speed: 2.86609
Iter 2/10: ladvise speed: 2.95524
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.9231
Iter 3/10: OSS cache speed: 3.14027
Iter 3/10: ladvise speed: 3.1591
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.10261
Iter 4/10: OSS cache speed: 2.15253
Iter 4/10: ladvise speed: 2.01866
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.846826
Iter 5/10: OSS cache speed: 0.370252
Iter 5/10: ladvise speed: 0.365323
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.380268
Iter 6/10: OSS cache speed: 0.474979
Iter 6/10: ladvise speed: 0.11837
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.971603
Iter 7/10: OSS cache speed: 0.983034
Iter 7/10: ladvise speed: 0.46811
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.14831
Iter 8/10: OSS cache speed: 0.980606
Iter 8/10: ladvise speed: 0.572928
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.48783
Iter 9/10: OSS cache speed: 0.942935
Iter 9/10: ladvise speed: 1.66884
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.77372
Iter 10/10: OSS cache speed: 2.01394
Iter 10/10: ladvise speed: 2.49373
Average uncached read: 1.74
Average speedup with OSS cached read: 1.67 = +-4.02%
Average speedup with ladvise willread: 1.72 = +-1.14%
Speedup with OSS cached read less than 20%, got -4.02%. Skipping ladvise willread check.
fail_loc=0