== sanity test 255a: check 'lfs ladvise -a willread' ===== 03:26:07 (1711092367)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.53248 s, 41.4 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: 1.884
Iter 1/10: OSS cache speed: 1.80057
Iter 1/10: ladvise speed: 1.8182
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.86541
Iter 2/10: OSS cache speed: 1.48694
Iter 2/10: ladvise speed: 1.50788
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.64906
Iter 3/10: OSS cache speed: 2.19498
Iter 3/10: ladvise speed: 1.86138
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.94636
Iter 4/10: OSS cache speed: 2.15499
Iter 4/10: ladvise speed: 1.95935
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.30193
Iter 5/10: OSS cache speed: 1.75849
Iter 5/10: ladvise speed: 2.32278
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 3.01132
Iter 6/10: OSS cache speed: 3.00903
Iter 6/10: ladvise speed: 2.8737
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.30606
Iter 7/10: OSS cache speed: 2.66392
Iter 7/10: ladvise speed: 0.595158
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.256992
Iter 8/10: OSS cache speed: 0.0973955
Iter 8/10: ladvise speed: 0.419704
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.11734
Iter 9/10: OSS cache speed: 0.137256
Iter 9/10: ladvise speed: 0.14637
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.175602
Iter 10/10: OSS cache speed: 0.241448
Iter 10/10: ladvise speed: 0.383534
Average uncached read: 1.55
Average speedup with OSS cached read: 1.55 = +0%
Average speedup with ladvise willread: 1.38 = +-10.96%
Speedup with OSS cached read less than 20%, got 0%. Skipping ladvise willread check.
fail_loc=0