Memory access options

Option

Default

-free-queue-length

100

Sets the number of entries in the free queue maintained by Purify. When you free a block, Purify stores it in an FIFO queue. When the queue length is exceeded, Purify frees the first block queued making it available for reuse. This helps Purify detect free-memory accesses (FMW, FMR). If you have plenty of swap space, you can use this option to increase the number of entries queued, thereby improving the likelihood of detecting free-memory accesses.

-free-queue-threshold

10000

Sets the maximum size of freed blocks to be appended to the Purify free queue. Purify immediately frees blocks larger than the size specified. If you have plenty of swap space, you can use this option to increase the size of entries queued, thereby improving the likelihood of detecting free-memory accesses.