== sanity test 255a: check 'lfs ladvise -a willread' ===== 04:58:21 (1713344301)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 0.657952 s, 159 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=4
fail_loc=0x237
Asynchronous ladvise shouldn't wait
fail_loc=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 4.2904
Iter 1/10: OSS cache speed: 3.89828
Iter 1/10: ladvise speed: 3.25264
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.73006
Iter 2/10: OSS cache speed: 5.62487
Iter 2/10: ladvise speed: 4.42379
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 4.20774
Iter 3/10: OSS cache speed: 5.79027
Iter 3/10: ladvise speed: 6.51443
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 4.83734
Iter 4/10: OSS cache speed: 5.60512
Iter 4/10: ladvise speed: 5.14199
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 4.55371
Iter 5/10: OSS cache speed: 6.25441
Iter 5/10: ladvise speed: 6.94245
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 5.37687
Iter 6/10: OSS cache speed: 5.67204
Iter 6/10: ladvise speed: 6.19416
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 5.34026
Iter 7/10: OSS cache speed: 6.05725
Iter 7/10: ladvise speed: 5.3714
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 5.32121
Iter 8/10: OSS cache speed: 5.61977
Iter 8/10: ladvise speed: 6.05403
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 5.96
Iter 9/10: OSS cache speed: 6.3784
Iter 9/10: ladvise speed: 6.35013
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 5.13386
Iter 10/10: OSS cache speed: 5.05541
Iter 10/10: ladvise speed: 5.38272
Average uncached read: 4.77
Average speedup with OSS cached read:  5.59 = +17.19%
Average speedup with ladvise willread:  5.56 = +16.56%
Speedup with OSS cached read less than 20%,  got 5.59%. Skipping ladvise willread check.