== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:17:51 (1708827471)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.25647 s, 46.5 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: 3.23689
Iter 1/10: OSS cache speed: 3.63741
Iter 1/10: ladvise speed: 2.82457
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 3.08538
Iter 2/10: OSS cache speed: 2.83127
Iter 2/10: ladvise speed: 3.00291
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 3.24087
Iter 3/10: OSS cache speed: 2.9065
Iter 3/10: ladvise speed: 3.16354
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.84846
Iter 4/10: OSS cache speed: 3.39222
Iter 4/10: ladvise speed: 3.09996
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.95593
Iter 5/10: OSS cache speed: 3.26371
Iter 5/10: ladvise speed: 3.36995
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.9636
Iter 6/10: OSS cache speed: 3.41587
Iter 6/10: ladvise speed: 3.19106
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 3.0731
Iter 7/10: OSS cache speed: 3.25944
Iter 7/10: ladvise speed: 3.38866
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.92572
Iter 8/10: OSS cache speed: 3.20002
Iter 8/10: ladvise speed: 3.24219
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.9786
Iter 9/10: OSS cache speed: 3.0793
Iter 9/10: ladvise speed: 3.09838
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.81623
Iter 10/10: OSS cache speed: 3.51788
Iter 10/10: ladvise speed: 3.6221
Average uncached read: 3.01
Average speedup with OSS cached read: 3.25 = +7.97%
Average speedup with ladvise willread: 3.20 = +6.31%
Speedup with OSS cached read less than 20%, got 7.97%. Skipping ladvise willread check.
fail_loc=0