Date: Fri, 11 Jan 2002 01:31:44 +0100 (CET) From: ANTOINE.BLAIVIE@student.kuleuven.ac.be To: "Gary W. Swearingen" <swear@blarg.net>, freeBSD <freebsd-questions@FreeBSD.ORG> Subject: 2nd questionnaire 4.4 FreeBSD Message-ID: <1010709104.3c3e32709e466@webmail.kuleuven.ac.be>
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[-- Attachment #1 --]
Hello,
I still have some questions concerning the 4.4 FreeBSD operating system,
I would appreciate it if you could take a look at it.
Thanks,
Antoine.
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d Questionnaire:
Are composite operations supported in main memory and persistent memory in 4.4 FreeBSD? roll back, restart, high-level invoking operation,
Are these operations executed concurrently?
What is the 4.4 FreeBSD crash handling policy? Effects of crashes and mechanisms that would provide crash resilience for a single operation invocation
What are the requirements for dynamic allocation (if supported by the system) of resources to processes?
What is the supported policy for deadlock handling by the system? Is there a possibility of livelock or starvation concerning processes?
What are the conditions for deadlock to exist? Hold while waiting, circular wait,?
What is the deadlock prevention mechanism?
Can a deadlock problem be solved with semaphores?
What about the data structures and algorithms for deadlock detection?
How is deadlock avoidance supported?
What is the transaction(possibly composite atomic operation)handling mechanism? Commit, ( cascading)abort, ability to recover state ?
Serializability and consistency of transactions? ACID properties of transactions?
Is there a concurrency control (of process operations) through locking?
2-phase locking?
Is there a time-stamp ordering (TSO) for concurrent execution of transactions? Is a time-stamp associated with each transaction?
Is there a usage of a recovery log in the context of crash resilience? Recovery manager, log records, log write-ahead, usage of checkpoints and checkpoint procedures,?
Usage of idempotent UNDO and REDO operations?
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