== sanity test 255a: check 'lfs ladvise -a willread' ===== 15:31:16 (1713468676)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.8241 s, 37.1 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: 2.04707
Iter 1/10: OSS cache speed: 2.58865
Iter 1/10: ladvise speed: 2.43703
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.95154
Iter 2/10: OSS cache speed: 2.33843
Iter 2/10: ladvise speed: 1.90935
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.58308
Iter 3/10: OSS cache speed: 1.96499
Iter 3/10: ladvise speed: 1.97191
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.62507
Iter 4/10: OSS cache speed: 1.79924
Iter 4/10: ladvise speed: 1.92397
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.39792
Iter 5/10: OSS cache speed: 2.16918
Iter 5/10: ladvise speed: 1.7279
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.64183
Iter 6/10: OSS cache speed: 1.62783
Iter 6/10: ladvise speed: 1.9606
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.44133
Iter 7/10: OSS cache speed: 2.30293
Iter 7/10: ladvise speed: 1.58977
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.02217
Iter 8/10: OSS cache speed: 2.18845
Iter 8/10: ladvise speed: 3.00497
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.32579
Iter 9/10: OSS cache speed: 1.71998
Iter 9/10: ladvise speed: 1.97636
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.04418
Iter 10/10: OSS cache speed: 2.28406
Iter 10/10: ladvise speed: 2.8404
Average uncached read: 2.00
Average speedup with OSS cached read: 2.09 = +4.50%
Average speedup with ladvise willread: 2.13 = +6.50%
Speedup with OSS cached read less than 20%, got 4.50%. Skipping ladvise willread check.
fail_loc=0