From askool99 at hotmail.com Wed Oct 9 04:57:31 2013 From: askool99 at hotmail.com (askool) Date: Wed, 9 Oct 2013 16:57:31 +0800 Subject: [Disksim-users] Disksim doesn't work for some synthetic IO settings (open system) Message-ID: Hi all, I found several abnormal situations that the disksim doesn't work for open subsystem model. 1) The simtime is stuck at time 0. --------------------please replace the synthio of "atlas_III.parv" as follows------------- disksim_synthio Synthio { Number of I/O requests to generate = 100, Maximum time of trace generated = 1000.0, System call/return with each request = 0, Think time from call to request = 0.0, Think time from request to return = 0.0, Generators = [ disksim_synthgen { # generator 0 Storage capacity per device = 17770250, devices = [ disk0 ], Blocking factor = 8, Probability of sequential access = 0, Probability of local access = 0, Probability of read access = 0.4, Probability of time-critical request = 0.0, Probability of time-limited request = 0.0, Time-limited think times = [ normal, 30.0, 100.0 ], General inter-arrival times = [ exponential, 0.0, 50 ], Sequential inter-arrival times = [ exponential, 0.0, 50.0 ], Local inter-arrival times = [ exponential, 0.0, 50.0 ], Local distances = [ normal, 0.0, 40000.0 ], Sizes = [ exponential, 0.0, 8.0 ] } # end of generator 0 ] # end of generator list } # end of synthetic workload spec ------------------------------------- 2) Unexpected request location --------------------please replace the synthio of "hp_c3323a.parv" as follows------------ disksim_synthio Synthio { Number of I/O requests to generate = 100, Maximum time of trace generated = 1000.0, System call/return with each request = 0, Think time from call to request = 0.0, Think time from request to return = 0.0, Generators = [ disksim_synthgen { # generator 0 Storage capacity per device = 4155272, devices = [ disk0 ], Blocking factor = 8, Probability of sequential access = 0.0, Probability of local access = 0.0, Probability of read access = 0.66, Probability of time-critical request = 0.0, Probability of time-limited request = 0.0, Time-limited think times = [ normal, 30.0, 100.0 ], General inter-arrival times = [ exponential, 0.0, 50.0 ], Sequential inter-arrival times = [ normal, 0.0, 0.0 ], Local inter-arrival times = [ exponential, 0.0, 0.0 ], Local distances = [ normal, 0.0, 40000.0 ], Sizes = [ exponential, 0.0, 8.0 ] } # end of generator 0 ] # end of generator list } # end of synthetic workload spec Thanks! -------------- next part -------------- An HTML attachment was scrubbed... URL: From askool99 at hotmail.com Wed Oct 9 08:51:09 2013 From: askool99 at hotmail.com (askool) Date: Wed, 9 Oct 2013 20:51:09 +0800 Subject: [Disksim-users] Disksim doesn't work for some synthetic IO settings (open system) In-Reply-To: References: Message-ID: Solved the first problem. It is due to the parameter loader. [ exponential, 0.0, 50 ] is explained as [ exponential, 0.0, 0 ]. It should be [ exponential, 0.0, 50.0 ] From: disksim-users-bounces at ece.cmu.edu [mailto:disksim-users-bounces at ece.cmu.edu] On Behalf Of askool Sent: Wednesday, 9 October, 2013 4:58 PM To: disksim-users at ece.cmu.edu Subject: [Disksim-users] Disksim doesn't work for some synthetic IO settings (open system) Hi all, I found several abnormal situations that the disksim doesn't work for open subsystem model. 1) The simtime is stuck at time 0. --------------------please replace the synthio of "atlas_III.parv" as follows------------- disksim_synthio Synthio { Number of I/O requests to generate = 100, Maximum time of trace generated = 1000.0, System call/return with each request = 0, Think time from call to request = 0.0, Think time from request to return = 0.0, Generators = [ disksim_synthgen { # generator 0 Storage capacity per device = 17770250, devices = [ disk0 ], Blocking factor = 8, Probability of sequential access = 0, Probability of local access = 0, Probability of read access = 0.4, Probability of time-critical request = 0.0, Probability of time-limited request = 0.0, Time-limited think times = [ normal, 30.0, 100.0 ], General inter-arrival times = [ exponential, 0.0, 50 ], Sequential inter-arrival times = [ exponential, 0.0, 50.0 ], Local inter-arrival times = [ exponential, 0.0, 50.0 ], Local distances = [ normal, 0.0, 40000.0 ], Sizes = [ exponential, 0.0, 8.0 ] } # end of generator 0 ] # end of generator list } # end of synthetic workload spec ------------------------------------- 2) Unexpected request location --------------------please replace the synthio of "hp_c3323a.parv" as follows------------ disksim_synthio Synthio { Number of I/O requests to generate = 100, Maximum time of trace generated = 1000.0, System call/return with each request = 0, Think time from call to request = 0.0, Think time from request to return = 0.0, Generators = [ disksim_synthgen { # generator 0 Storage capacity per device = 4155272, devices = [ disk0 ], Blocking factor = 8, Probability of sequential access = 0.0, Probability of local access = 0.0, Probability of read access = 0.66, Probability of time-critical request = 0.0, Probability of time-limited request = 0.0, Time-limited think times = [ normal, 30.0, 100.0 ], General inter-arrival times = [ exponential, 0.0, 50.0 ], Sequential inter-arrival times = [ normal, 0.0, 0.0 ], Local inter-arrival times = [ exponential, 0.0, 0.0 ], Local distances = [ normal, 0.0, 40000.0 ], Sizes = [ exponential, 0.0, 8.0 ] } # end of generator 0 ] # end of generator list } # end of synthetic workload spec Thanks! -------------- next part -------------- An HTML attachment was scrubbed... URL: From sgrajeswari at gmail.com Wed Oct 30 05:02:48 2013 From: sgrajeswari at gmail.com (raji) Date: Wed, 30 Oct 2013 02:02:48 -0700 Subject: [Disksim-users] Disksim users Message-ID: Hai, I am doing Research on Storage Technologies (Using Disksim 4.0 for RAID configurations). I need suggestions for Find Disk failure and Recovery.