Introduction to HP-UX Kernel Tuning - OpenMPE

More documents

Recommendations

Info

fs_async - sync policy • Async filesystem writes (inc. metadata) • 0 = safe for panics, powerfails • 1 = risky (filesystem corruption is likely) but can improve writes (only) by 30% 12
default_disk_ir - immediate reporting • Disk Immediate Reporting - no wait for write to complete • Similar to fs_async except applies to all disk writes including raw • Kernel param or scsictl by disk 13
Page 1 and 2: Introduction to HP-UX Kernel Tuning
Page 3 and 4: Vocabulary • Kernel file −/stan
Page 5 and 6: Filesystem Parameters • nfile, nf
Page 7 and 8: nflocks - max file locks • Maximu
Page 9 and 10: ncdnode • In-core cache of unique
Page 11: maxfiles, maxfiles_lim • Single p
Page 15 and 16: Process Parameters • nproc, maxup
Page 17 and 18: maxdsiz - data segment • Maximum
Page 19 and 20: maxtsiz - text size • Unchanging
Page 21 and 22: Virtual Memory (swap) • maxswapch
Page 23 and 24: nswapdev, nswapfs • nswapdev - ma
Page 25 and 26: swapmem_on RAM 1 Gb SWAP 500 meg sw
Page 27 and 28: swapmem_on RAM 1 Gb SWAP 500 meg sw
Page 29 and 30: Some last tips • Web help: http:

Introduction to HP-UX Kernel Tuning - OpenMPE

Create successful ePaper yourself

Delete template?

Save as template?