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We are testing if there is a match with the ses device in a loop by calling ses_match_to_enclosure(), which will issue scsi receive diagnostics commands to the ses device for every device on the same host. On one of our boxes with 840 disks, it takes a long time to load the driver: [root@g1b-oss06 ~]# time modprobe ses real 40m48.247s user 0m0.001s sys 0m0.196s With the patch: [root@g1b-oss06 ~]# time modprobe ses real 0m17.915s user 0m0.008s sys 0m0.053s Note that we still need to refresh page 10 when we see a new disk to create the link. Signed-off-by: Li Dongyang <dongyang.li@anu.edu.au> Tested-by: Jason Ozolins <jason.ozolins@hpe.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.