== sanity test 255a: check 'lfs ladvise -a willread' ===== 17:08:22 (1712264902)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.19203 s, 47.8 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
llite.lustre-ffff8800b6025800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.717
Iter 1/10: OSS cache speed: 2.67725
Iter 1/10: ladvise speed: 2.7215
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.84268
Iter 2/10: OSS cache speed: 2.69012
Iter 2/10: ladvise speed: 2.95255
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.93759
Iter 3/10: OSS cache speed: 2.51426
Iter 3/10: ladvise speed: 2.64115
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.73241
Iter 4/10: OSS cache speed: 2.78076
Iter 4/10: ladvise speed: 2.90178
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.81945
Iter 5/10: OSS cache speed: 2.79904
Iter 5/10: ladvise speed: 2.72891
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.69397
Iter 6/10: OSS cache speed: 2.78814
Iter 6/10: ladvise speed: 2.74323
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.76958
Iter 7/10: OSS cache speed: 2.98296
Iter 7/10: ladvise speed: 2.95518
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 3.00897
Iter 8/10: OSS cache speed: 2.94372
Iter 8/10: ladvise speed: 2.99609
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 3.00292
Iter 9/10: OSS cache speed: 2.28582
Iter 9/10: ladvise speed: 2.93287
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.89896
Iter 10/10: OSS cache speed: 2.90422
Iter 10/10: ladvise speed: 2.93372
Average uncached read: 2.84
Average speedup with OSS cached read: 2.73 = +-3.87%
Average speedup with ladvise willread: 2.85 = +.35%
Speedup with OSS cached read less than 20%, got -3.87%. Skipping ladvise willread check.
fail_loc=0