== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:49:16 (1724762956)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 3.38502 s, 31.0 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
llite.lustre-ffff8800b5b64800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.5122
Iter 1/10: OSS cache speed: 1.21971
Iter 1/10: ladvise speed: 1.79532
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.7862
Iter 2/10: OSS cache speed: 2.23074
Iter 2/10: ladvise speed: 2.23121
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.99172
Iter 3/10: OSS cache speed: 2.03913
Iter 3/10: ladvise speed: 2.1691
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.12139
Iter 4/10: OSS cache speed: 2.33443
Iter 4/10: ladvise speed: 2.33115
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.29039
Iter 5/10: OSS cache speed: 2.55197
Iter 5/10: ladvise speed: 2.6764
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.50853
Iter 6/10: OSS cache speed: 2.79403
Iter 6/10: ladvise speed: 3.28416
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.81449
Iter 7/10: OSS cache speed: 3.28071
Iter 7/10: ladvise speed: 3.23103
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.86407
Iter 8/10: OSS cache speed: 2.54323
Iter 8/10: ladvise speed: 2.15155
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.22644
Iter 9/10: OSS cache speed: 3.10068
Iter 9/10: ladvise speed: 3.16365
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.88196
Iter 10/10: OSS cache speed: 2.83475
Iter 10/10: ladvise speed: 3.32063
Average uncached read: 2.19
Average speedup with OSS cached read: 2.49 = +13.69%
Average speedup with ladvise willread: 2.63 = +20.09%
Speedup with OSS cached read less than 20%, got 13.69%. Skipping ladvise willread check.
fail_loc=0