== sanity test 255a: check 'lfs ladvise -a willread' ===== 04:55:11 (1715331311)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 3.36677 s, 31.1 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: 0.343695
Iter 1/10: OSS cache speed: 0.067698
Iter 1/10: ladvise speed: 0.534298
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.4553
Iter 2/10: OSS cache speed: 0.63379
Iter 2/10: ladvise speed: 0.617893
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.506902
Iter 3/10: OSS cache speed: 1.47573
Iter 3/10: ladvise speed: 0.409042
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.527433
Iter 4/10: OSS cache speed: 0.889894
Iter 4/10: ladvise speed: 0.661943
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.315245
Iter 5/10: OSS cache speed: 0.708278
Iter 5/10: ladvise speed: 0.197405
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.588592
Iter 6/10: OSS cache speed: 0.883777
Iter 6/10: ladvise speed: 1.35866
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.404904
Iter 7/10: OSS cache speed: 0.481001
Iter 7/10: ladvise speed: 0.705472
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.26029
Iter 8/10: OSS cache speed: 1.12888
Iter 8/10: ladvise speed: 1.78172
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.05195
Iter 9/10: OSS cache speed: 2.12442
Iter 9/10: ladvise speed: 2.00027
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.98828
Iter 10/10: OSS cache speed: 1.94381
Iter 10/10: ladvise speed: 2.841
Average uncached read: .84
Average speedup with OSS cached read: 1.03 = +22.61%
Average speedup with ladvise willread: 1.11 = +32.14%
fail_loc=0