== sanity test 255a: check 'lfs ladvise -a willread' ===== 22:56:39 (1770436599)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 5.62356 s, 18.6 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
llite.lustre-ffff9eef03fe4000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.20016
Iter 1/10: OSS cache speed: 1.28997
Iter 1/10: ladvise speed: 1.29752
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.17116
Iter 2/10: OSS cache speed: 1.32194
Iter 2/10: ladvise speed: 2.05502
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.79058
Iter 3/10: OSS cache speed: 2.12497
Iter 3/10: ladvise speed: 1.25748
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.32955
Iter 4/10: OSS cache speed: 1.87666
Iter 4/10: ladvise speed: 1.36563
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.16025
Iter 5/10: OSS cache speed: 1.35751
Iter 5/10: ladvise speed: 2.40519
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.00951
Iter 6/10: OSS cache speed: 2.3815
Iter 6/10: ladvise speed: 2.69219
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.16944
Iter 7/10: OSS cache speed: 1.43954
Iter 7/10: ladvise speed: 2.33757
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.55261
Iter 8/10: OSS cache speed: 1.61644
Iter 8/10: ladvise speed: 1.23016
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.13525
Iter 9/10: OSS cache speed: 1.27723
Iter 9/10: ladvise speed: 1.37821
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.89519
Iter 10/10: OSS cache speed: 2.61738
Iter 10/10: ladvise speed: 2.06932
Average uncached read: 1.64
Average speedup with OSS cached read:  1.73 = +5%
Average speedup with ladvise willread:  1.80 = +9%
Speedup with OSS cached read less than 20%,  got 5%. Skipping ladvise willread check.
fail_loc=0