== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:54:37 (1714402477)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.26375 s, 46.3 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: 0.846399
Iter 1/10: OSS cache speed: 0.0727551
Iter 1/10: ladvise speed: 0.139778
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.0111045
Iter 2/10: OSS cache speed: 0.0119824
Iter 2/10: ladvise speed: 0.0610013
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.0334028
Iter 3/10: OSS cache speed: 0.132021
Iter 3/10: ladvise speed: 0.131334
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.076834
Iter 4/10: OSS cache speed: 0.0653455
Iter 4/10: ladvise speed: 0.114737
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.16964
Iter 5/10: OSS cache speed: 0.0600458
Iter 5/10: ladvise speed: 0.147682
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.166051
Iter 6/10: OSS cache speed: 0.27735
Iter 6/10: ladvise speed: 0.111014
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.54082
Iter 7/10: OSS cache speed: 0.0159342
Iter 7/10: ladvise speed: 0.0688339
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.247689
Iter 8/10: OSS cache speed: 1.07972
Iter 8/10: ladvise speed: 0.0963882
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.0668863
Iter 9/10: OSS cache speed: 0.0555312
Iter 9/10: ladvise speed: 0.0623173
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.057875
Iter 10/10: OSS cache speed: 0.101858
Iter 10/10: ladvise speed: 0.0752386
Average uncached read: .22
Average speedup with OSS cached read: .18 = +-18.18%
Average speedup with ladvise willread: .10 = +-54.54%
Speedup with OSS cached read less than 20%, got -18.18%. Skipping ladvise willread check.
fail_loc=0