Hey list, I'm optimizing a program that reads image metadata using CGImageSourceCreateWithURL(). This program should strictly read from disk, but as it iterates over thousands of photos, the kernel is writing data to disk at >1 MB/sec. fs_usage reports many instances of the following: WrMeta[asyncP] D=0x... B=0x2000 /dev/disk... 0.097343 W kernel_task This is not the kernel paging-out to disk, as Activity Monitor reports a constant value for "Page outs" for the lifetime of the program. What is 'WrMeta'? _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app... This email sent to site_archiver@lists.apple.com