== sanity test 255a: check 'lfs ladvise -a willread' ===== 03:39:44 (1713425984)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.26383 s, 46.3 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: 1.56221
Iter 1/10: OSS cache speed: 1.65428
Iter 1/10: ladvise speed: 1.5506
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.47628
Iter 2/10: OSS cache speed: 1.45182
Iter 2/10: ladvise speed: 1.79272
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.48516
Iter 3/10: OSS cache speed: 2.55182
Iter 3/10: ladvise speed: 2.23332
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.41599
Iter 4/10: OSS cache speed: 2.41961
Iter 4/10: ladvise speed: 2.46998
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.58995
Iter 5/10: OSS cache speed: 2.71953
Iter 5/10: ladvise speed: 2.66613
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.68275
Iter 6/10: OSS cache speed: 2.55921
Iter 6/10: ladvise speed: 2.57835
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.75302
Iter 7/10: OSS cache speed: 2.67805
Iter 7/10: ladvise speed: 2.69469
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.62021
Iter 8/10: OSS cache speed: 2.59339
Iter 8/10: ladvise speed: 2.5956
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.53333
Iter 9/10: OSS cache speed: 2.67076
Iter 9/10: ladvise speed: 2.62197
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.69991
Iter 10/10: OSS cache speed: 2.6505
Iter 10/10: ladvise speed: 2.68565
Average uncached read: 2.38
Average speedup with OSS cached read: 2.39 = +.42%
Average speedup with ladvise willread: 2.38 = +0%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 24278:   < 20 : < 20 : syntax error: operand expected (error token is "< 20 ")
lfs ladvise: cannot give advice: Unknown error 524 (524)
ladvise: cannot give advice 'dontneed' to file '/mnt/lustre/f255a.sanity': Unknown error 524
osd-zfs does not support dontneed or drop_caches
fail_loc=0