== sanity test 255a: check 'lfs ladvise -a willread' ===== 09:21:23 (1761312083)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 2.56806 s, 40.8 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=4
fail_loc=0x237
Asynchronous ladvise shouldn't wait
fail_loc=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.90819
Iter 1/10: OSS cache speed: 1.11027
Iter 1/10: ladvise speed: 1.07454
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.766403
Iter 2/10: OSS cache speed: 1.06047
Iter 2/10: ladvise speed: 1.07398
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.859606
Iter 3/10: OSS cache speed: 1.04611
Iter 3/10: ladvise speed: 1.00159
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.770498
Iter 4/10: OSS cache speed: 0.923351
Iter 4/10: ladvise speed: 1.13133
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.797501
Iter 5/10: OSS cache speed: 1.17344
Iter 5/10: ladvise speed: 1.01331
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.820444
Iter 6/10: OSS cache speed: 1.07862
Iter 6/10: ladvise speed: 0.806614
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.780555
Iter 7/10: OSS cache speed: 0.780277
Iter 7/10: ladvise speed: 0.989294
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.775245
Iter 8/10: OSS cache speed: 0.922747
Iter 8/10: ladvise speed: 0.857949
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.740787
Iter 9/10: OSS cache speed: 0.743038
Iter 9/10: ladvise speed: 1.0609
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.571499
Iter 10/10: OSS cache speed: 0.737555
Iter 10/10: ladvise speed: 0.742722
Average uncached read: .77
Average speedup with OSS cached read:  .95 = +23.37%
Average speedup with ladvise willread:  .97 = +25.97%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21871: 0*=¬tU: < 20 : syntax error: operand expected (error token is "< 20 ")
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21885:   >  : >  : syntax error: operand expected (error token is ">  ")
running in VM 'kvm', ignore error
 sanity test_255a: @@@@@@ IGNORE (env=kvm): Speedup with willread is less than  .47%, got .97% 
  Trace dump:
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6498:error_ignore()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6513:error_not_in_vm()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21886:ladvise_willread_performance()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21967:test_255a()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6840:run_one()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6887:run_one_logged()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6713:run_test()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21969:main()