== sanity test 255a: check 'lfs ladvise -a willread' ===== 03:00:14 (1713078014)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.54297 s, 41.2 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: 1.77582
Iter 1/10: OSS cache speed: 1.65048
Iter 1/10: ladvise speed: 1.78381
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.81316
Iter 2/10: OSS cache speed: 1.83604
Iter 2/10: ladvise speed: 2.44244
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.25413
Iter 3/10: OSS cache speed: 2.65098
Iter 3/10: ladvise speed: 1.81176
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.78272
Iter 4/10: OSS cache speed: 2.21527
Iter 4/10: ladvise speed: 1.73934
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.78516
Iter 5/10: OSS cache speed: 2.44125
Iter 5/10: ladvise speed: 1.459
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.71912
Iter 6/10: OSS cache speed: 1.57715
Iter 6/10: ladvise speed: 1.75077
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.60412
Iter 7/10: OSS cache speed: 1.60959
Iter 7/10: ladvise speed: 2.13315
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.53252
Iter 8/10: OSS cache speed: 1.66246
Iter 8/10: ladvise speed: 1.53182
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.64472
Iter 9/10: OSS cache speed: 1.53418
Iter 9/10: ladvise speed: 1.63345
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.33287
Iter 10/10: OSS cache speed: 2.78629
Iter 10/10: ladvise speed: 1.88658
Average uncached read: 1.82
Average speedup with OSS cached read: 1.99 = +9.34%
Average speedup with ladvise willread: 1.81 = +-.54%
Speedup with OSS cached read less than 20%, got 9.34%. Skipping ladvise willread check.
fail_loc=0