Re: [openstack-dev] [rally][users]: Synchronizing between multiple scenario instances.
Behazd, Ok, for now we can do it in such way. What I am thinking is that this *logic* should be implemented on benchmark.runner level. Cause different load generators are using different approaches to generate load. So in case of serial runner it's even impossible to make locking. So what about adding in https://github.com/stackforge/rally/blob/master/rally/benchmark/runners/base.py#L140 2 abstract methods (one for incrementing, another for waiting) And implement them for different runners? Best regards, Boris Pavlovic On Thu, Oct 23, 2014 at 12:05 PM, Behzad Dastur (bdastur) bdas...@cisco.com wrote: Hi Boris, I am still getting my feet wet with rally so some concepts are new, and did not quite get your statement regarding the different load generators. I am presuming you are referring to the Scenario runner and the different “types” of runs. What I was looking at is the runner, where we specify the type, times and concurrency. We could have an additional field(s) which would specify the synchronization property. Essentially, what I have found most useful in the cases where we run scenarios/tests in parallel; is some sort of “barrier”, where at a certain point in the run you want all the parallel tasks to reach a specific point before continuing. Also, I am also considering cases where synchronization is needed within a single benchmark case, where the same benchmark scenario: creates some vms, performs some tasks, deletes the vm Just for simplicity as a POC, I tried something with shared memory (multiprocessing.Value), which looks something like this: class Barrier(object): __init__(self, concurrency) self.shmem = multiprocessing.Value(‘I’, concurrency) self.lock = multiprocessing.Lock() def wait_at_barrier (): while self.shmem.value 0: time.sleep(1) return def decrement_shm_concurrency_cnt (): with self.lock: self.shmem.value -= 1 And from the scenario, it can be called as: scenario: -- do some action – barrobj.decrement_shm_concurrency_cnt() sync_helper.wait_at_barrier() -- do some action – ß all processes will do this action at almost the same time. I would be happy to discuss more to get a good common solution. regards, Behzad *From:* bo...@pavlovic.ru [mailto:bo...@pavlovic.ru] *On Behalf Of *Boris Pavlovic *Sent:* Tuesday, October 21, 2014 3:23 PM *To:* Behzad Dastur (bdastur) *Cc:* OpenStack Development Mailing List (not for usage questions); Pradeep Chandrasekar (pradeech); John Wei-I Wu (weiwu) *Subject:* Re: [openstack-dev] [rally][users]: Synchronizing between multiple scenario instances. Behzad, Unfortunately at this point there is no support of locking between scenarios. It will be quite tricky for implementation, because we have different load generators, and we will need to find common solutions for all of them. If you have any ideas about how to implement it in such way, I will be more than happy to get this in upstream. One of the way that I see is to having some kind of chain-of-benchmarks: 1) Like first benchmark is running N VMs 2) Second benchmarking is doing something with all those benchmarks 3) Third benchmark is deleting all these VMs (where chain elements are atomic actions) Probably this will be better long term solution. Only thing that we should understand is how to store those results and how to display them. If you would like to help with this let's start discussing it, in some kind of google docs. Thoughts? Best regards, Boris Pavlovic On Wed, Oct 22, 2014 at 2:13 AM, Behzad Dastur (bdastur) bdas...@cisco.com wrote: Does rally provide any synchronization mechanism to synchronize between multiple scenario, when running in parallel? Rally spawns multiple processes, with each process running the scenario. We need a way to synchronize between these to start a perf test operation at the same time. regards, Behzad ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
Re: [openstack-dev] [rally][users]: Synchronizing between multiple scenario instances.
Hi Boris, I am still getting my feet wet with rally so some concepts are new, and did not quite get your statement regarding the different load generators. I am presuming you are referring to the Scenario runner and the different “types” of runs. What I was looking at is the runner, where we specify the type, times and concurrency. We could have an additional field(s) which would specify the synchronization property. Essentially, what I have found most useful in the cases where we run scenarios/tests in parallel; is some sort of “barrier”, where at a certain point in the run you want all the parallel tasks to reach a specific point before continuing. Also, I am also considering cases where synchronization is needed within a single benchmark case, where the same benchmark scenario: creates some vms, performs some tasks, deletes the vm Just for simplicity as a POC, I tried something with shared memory (multiprocessing.Value), which looks something like this: class Barrier(object): __init__(self, concurrency) self.shmem = multiprocessing.Value(‘I’, concurrency) self.lock = multiprocessing.Lock() def wait_at_barrier (): while self.shmem.value 0: time.sleep(1) return def decrement_shm_concurrency_cnt (): with self.lock: self.shmem.value -= 1 And from the scenario, it can be called as: scenario: -- do some action – barrobj.decrement_shm_concurrency_cnt() sync_helper.wait_at_barrier() -- do some action – -- all processes will do this action at almost the same time. I would be happy to discuss more to get a good common solution. regards, Behzad From: bo...@pavlovic.ru [mailto:bo...@pavlovic.ru] On Behalf Of Boris Pavlovic Sent: Tuesday, October 21, 2014 3:23 PM To: Behzad Dastur (bdastur) Cc: OpenStack Development Mailing List (not for usage questions); Pradeep Chandrasekar (pradeech); John Wei-I Wu (weiwu) Subject: Re: [openstack-dev] [rally][users]: Synchronizing between multiple scenario instances. Behzad, Unfortunately at this point there is no support of locking between scenarios. It will be quite tricky for implementation, because we have different load generators, and we will need to find common solutions for all of them. If you have any ideas about how to implement it in such way, I will be more than happy to get this in upstream. One of the way that I see is to having some kind of chain-of-benchmarks: 1) Like first benchmark is running N VMs 2) Second benchmarking is doing something with all those benchmarks 3) Third benchmark is deleting all these VMs (where chain elements are atomic actions) Probably this will be better long term solution. Only thing that we should understand is how to store those results and how to display them. If you would like to help with this let's start discussing it, in some kind of google docs. Thoughts? Best regards, Boris Pavlovic On Wed, Oct 22, 2014 at 2:13 AM, Behzad Dastur (bdastur) bdas...@cisco.commailto:bdas...@cisco.com wrote: Does rally provide any synchronization mechanism to synchronize between multiple scenario, when running in parallel? Rally spawns multiple processes, with each process running the scenario. We need a way to synchronize between these to start a perf test operation at the same time. regards, Behzad ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
Re: [openstack-dev] [rally][users]: Synchronizing between multiple scenario instances.
Behzad, Unfortunately at this point there is no support of locking between scenarios. It will be quite tricky for implementation, because we have different load generators, and we will need to find common solutions for all of them. If you have any ideas about how to implement it in such way, I will be more than happy to get this in upstream. One of the way that I see is to having some kind of chain-of-benchmarks: 1) Like first benchmark is running N VMs 2) Second benchmarking is doing something with all those benchmarks 3) Third benchmark is deleting all these VMs (where chain elements are atomic actions) Probably this will be better long term solution. Only thing that we should understand is how to store those results and how to display them. If you would like to help with this let's start discussing it, in some kind of google docs. Thoughts? Best regards, Boris Pavlovic On Wed, Oct 22, 2014 at 2:13 AM, Behzad Dastur (bdastur) bdas...@cisco.com wrote: Does rally provide any synchronization mechanism to synchronize between multiple scenario, when running in parallel? Rally spawns multiple processes, with each process running the scenario. We need a way to synchronize between these to start a perf test operation at the same time. regards, Behzad ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
Re: [openstack-dev] [rally][users]
Hi Boris, Does rally provide any synchronization mechanism to synchronize between multiple scenario, when running in parallel? Rally spawns multiple processes, with each process running the scenario. We need a way to synchronize between these to start a perf test operation at the same time. regards, Behzad From: Boris Pavlovic [mailto:bpavlo...@mirantis.com] Sent: Wednesday, September 24, 2014 11:24 PM To: OpenStack Development Mailing List (not for usage questions) Subject: Re: [openstack-dev] [rally][users] Ajay, Ya adding support of benchmarking OpenStack clouds using ordinary user accounts that already exist is one of our majors goals for already more then half of year. As I said in my previous message, we will support it soon finally. Btw we have feature request page: https://github.com/stackforge/rally/tree/master/doc/feature_request With the list of features that we are working now. Best regards, Boris Pavlovic On Thu, Sep 25, 2014 at 5:30 AM, Ajay Kalambur (akalambu) akala...@cisco.commailto:akala...@cisco.com wrote: Hi Boris Existing users is one thing but according to Rally page it says admin account benchmarking is already supported Rally is on its way to support of benchmarking OpenStack clouds using ordinary user accounts that already exist. Rally lacked such functionality (it only supported benchmarking either from an admin account or from a bunch of temporarily created users), which posed a problem since some deployments don't allow temporary users creation. There have been twohttps://review.openstack.org/#/c/116766/ patcheshttps://review.openstack.org/#/c/119344/ that prepare the code for this new functionality. It is going to come very soon - stay tuned. Ajay From: Boris Pavlovic bpavlo...@mirantis.commailto:bpavlo...@mirantis.com Reply-To: OpenStack Development Mailing List (not for usage questions) openstack-dev@lists.openstack.orgmailto:openstack-dev@lists.openstack.org Date: Wednesday, September 24, 2014 at 6:13 PM To: OpenStack Development Mailing List (not for usage questions) openstack-dev@lists.openstack.orgmailto:openstack-dev@lists.openstack.org Subject: Re: [openstack-dev] [rally][users] Ajay, I am working that feature. It's almost ready. I'll let you know when I finish. Best regards, Boris Pavlovic On Thu, Sep 25, 2014 at 5:02 AM, Ajay Kalambur (akalambu) akala...@cisco.commailto:akala...@cisco.com wrote: Hi Our default mode of execution of rally is allowing Rally to create a new user and tenant. Is there a way to have rally use the existing admin tenant and user. I need to use Rally for some tests which would need a admin access so I would like Rally to use existing admin tenant and admin user for tests Ajay ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.orgmailto:OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.orgmailto:OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
Re: [openstack-dev] [rally][users]
Ajay, Ya adding support of *benchmarking OpenStack clouds using ordinary user accounts that already exist *is one of our majors goals for already more then half of year. As I said in my previous message, we will support it soon finally. Btw we have feature request page: https://github.com/stackforge/rally/tree/master/doc/feature_request With the list of features that we are working now. Best regards, Boris Pavlovic On Thu, Sep 25, 2014 at 5:30 AM, Ajay Kalambur (akalambu) akala...@cisco.com wrote: Hi Boris Existing users is one thing but according to Rally page it says admin account benchmarking is already supported Rally is on its way to support of *benchmarking OpenStack clouds using ordinary user accounts that already exist*. Rally lacked such functionality (it only supported benchmarking either from an admin account or from a bunch of temporarily created users), which posed a problem since some deployments don't allow temporary users creation. There have been two https://review.openstack.org/#/c/116766/ patches https://review.openstack.org/#/c/119344/ that prepare the code for this new functionality. It is going to come very soon - stay tuned. Ajay From: Boris Pavlovic bpavlo...@mirantis.com Reply-To: OpenStack Development Mailing List (not for usage questions) openstack-dev@lists.openstack.org Date: Wednesday, September 24, 2014 at 6:13 PM To: OpenStack Development Mailing List (not for usage questions) openstack-dev@lists.openstack.org Subject: Re: [openstack-dev] [rally][users] Ajay, I am working that feature. It's almost ready. I'll let you know when I finish. Best regards, Boris Pavlovic On Thu, Sep 25, 2014 at 5:02 AM, Ajay Kalambur (akalambu) akala...@cisco.com wrote: Hi Our default mode of execution of rally is allowing Rally to create a new user and tenant. Is there a way to have rally use the existing admin tenant and user. I need to use Rally for some tests which would need a admin access so I would like Rally to use existing admin tenant and admin user for tests Ajay ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
Re: [openstack-dev] [rally][users]
Ajay, I am working that feature. It's almost ready. I'll let you know when I finish. Best regards, Boris Pavlovic On Thu, Sep 25, 2014 at 5:02 AM, Ajay Kalambur (akalambu) akala...@cisco.com wrote: Hi Our default mode of execution of rally is allowing Rally to create a new user and tenant. Is there a way to have rally use the existing admin tenant and user. I need to use Rally for some tests which would need a admin access so I would like Rally to use existing admin tenant and admin user for tests Ajay ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
Re: [openstack-dev] [rally][users]
Hi Boris Existing users is one thing but according to Rally page it says admin account benchmarking is already supported Rally is on its way to support of benchmarking OpenStack clouds using ordinary user accounts that already exist. Rally lacked such functionality (it only supported benchmarking either from an admin account or from a bunch of temporarily created users), which posed a problem since some deployments don't allow temporary users creation. There have been twohttps://review.openstack.org/#/c/116766/ patcheshttps://review.openstack.org/#/c/119344/ that prepare the code for this new functionality. It is going to come very soon - stay tuned. Ajay From: Boris Pavlovic bpavlo...@mirantis.commailto:bpavlo...@mirantis.com Reply-To: OpenStack Development Mailing List (not for usage questions) openstack-dev@lists.openstack.orgmailto:openstack-dev@lists.openstack.org Date: Wednesday, September 24, 2014 at 6:13 PM To: OpenStack Development Mailing List (not for usage questions) openstack-dev@lists.openstack.orgmailto:openstack-dev@lists.openstack.org Subject: Re: [openstack-dev] [rally][users] Ajay, I am working that feature. It's almost ready. I'll let you know when I finish. Best regards, Boris Pavlovic On Thu, Sep 25, 2014 at 5:02 AM, Ajay Kalambur (akalambu) akala...@cisco.commailto:akala...@cisco.com wrote: Hi Our default mode of execution of rally is allowing Rally to create a new user and tenant. Is there a way to have rally use the existing admin tenant and user. I need to use Rally for some tests which would need a admin access so I would like Rally to use existing admin tenant and admin user for tests Ajay ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.orgmailto:OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev ___ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
