== sanity test 255a: check 'lfs ladvise -a willread' ===== 04:14:33 (1712477673)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.50274 s, 41.9 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: 1.45735
Iter 1/10: OSS cache speed: 1.6656
Iter 1/10: ladvise speed: 1.70947
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.4478
Iter 2/10: OSS cache speed: 1.67378
Iter 2/10: ladvise speed: 1.67776
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.43457
Iter 3/10: OSS cache speed: 1.68838
Iter 3/10: ladvise speed: 1.72935
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.67248
Iter 4/10: OSS cache speed: 1.84099
Iter 4/10: ladvise speed: 1.82358
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.42044
Iter 5/10: OSS cache speed: 1.68482
Iter 5/10: ladvise speed: 2.62666
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.62877
Iter 6/10: OSS cache speed: 2.82678
Iter 6/10: ladvise speed: 1.63845
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.79293
Iter 7/10: OSS cache speed: 2.53188
Iter 7/10: ladvise speed: 2.50295
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.63705
Iter 8/10: OSS cache speed: 3.30892
Iter 8/10: ladvise speed: 3.12986
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.01668
Iter 9/10: OSS cache speed: 2.60321
Iter 9/10: ladvise speed: 1.80245
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.96538
Iter 10/10: OSS cache speed: 2.66495
Iter 10/10: ladvise speed: 3.21261
Average uncached read: 1.84
Average speedup with OSS cached read: 2.24 = +21.73%
Average speedup with ladvise willread: 2.18 = +18.47%
fail_loc=0