== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:39:47 (1715333987)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.8875 s, 36.3 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: 2.97306
Iter 1/10: OSS cache speed: 3.35849
Iter 1/10: ladvise speed: 3.26682
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 3.03641
Iter 2/10: OSS cache speed: 3.30325
Iter 2/10: ladvise speed: 3.23506
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 3.01981
Iter 3/10: OSS cache speed: 3.3205
Iter 3/10: ladvise speed: 3.22195
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.78149
Iter 4/10: OSS cache speed: 3.30623
Iter 4/10: ladvise speed: 3.23876
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.95311
Iter 5/10: OSS cache speed: 3.33935
Iter 5/10: ladvise speed: 3.26207
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 3.03936
Iter 6/10: OSS cache speed: 3.37825
Iter 6/10: ladvise speed: 3.24945
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.96644
Iter 7/10: OSS cache speed: 3.12868
Iter 7/10: ladvise speed: 3.13698
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.95504
Iter 8/10: OSS cache speed: 3.08963
Iter 8/10: ladvise speed: 3.14436
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.68066
Iter 9/10: OSS cache speed: 3.00987
Iter 9/10: ladvise speed: 3.10321
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.98727
Iter 10/10: OSS cache speed: 2.93451
Iter 10/10: ladvise speed: 2.96961
Average uncached read: 2.93
Average speedup with OSS cached read: 3.21 = +9.55%
Average speedup with ladvise willread: 3.18 = +8.53%
Speedup with OSS cached read less than 20%, got 9.55%. Skipping ladvise willread check.
fail_loc=0