== sanity test 255a: check 'lfs ladvise -a willread' ===== 07:28:53 (1749122933)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.42867 s, 43.2 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-ffff8800ab2e2800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.52763
Iter 1/10: OSS cache speed: 2.44576
Iter 1/10: ladvise speed: 2.40689
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.4691
Iter 2/10: OSS cache speed: 2.46942
Iter 2/10: ladvise speed: 2.46912
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.42712
Iter 3/10: OSS cache speed: 2.57773
Iter 3/10: ladvise speed: 2.51367
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.54693
Iter 4/10: OSS cache speed: 2.58131
Iter 4/10: ladvise speed: 2.61975
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.71851
Iter 5/10: OSS cache speed: 2.68434
Iter 5/10: ladvise speed: 2.73817
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.61333
Iter 6/10: OSS cache speed: 2.67675
Iter 6/10: ladvise speed: 2.78661
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.57283
Iter 7/10: OSS cache speed: 2.57549
Iter 7/10: ladvise speed: 2.79688
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.7707
Iter 8/10: OSS cache speed: 2.75696
Iter 8/10: ladvise speed: 2.7759
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.80169
Iter 9/10: OSS cache speed: 2.76987
Iter 9/10: ladvise speed: 1.94786
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.03367
Iter 10/10: OSS cache speed: 1.89229
Iter 10/10: ladvise speed: 1.95304
Average uncached read: 2.54
Average speedup with OSS cached read:  2.54 = +0%
Average speedup with ladvise willread:  2.50 = +-1%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0