perl-md5-mmap

A much happier zpool

I've udpated Archive::BagIt with an mmap optimization

https://github.com/rjeschmi/Archive-BagIt/commit/da8ae0bfd1e0a82f704e29861aab8fbd79c9e6e8


pool                                          alloc   free   read  write   read  write
--------------------------------------------  -----  -----  -----  -----  -----  -----
cihmz                                         39.4T  4.11T  6.62K    237   782M  1.19M
  raidz2                                      20.4T  1.35T  2.16K     99   252M   493K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0586423      -      -  1.77K     38  52.6M   250K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0511691      -      -  1.28K     34  37.9M   236K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0591386      -      -  1.05K     35  31.2M   238K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0590215      -      -  1.79K     41  53.6M   280K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0523197      -      -  1.44K     39  42.8M   268K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0521667      -      -  1.19K     42  35.1M   268K
  raidz2                                      19.0T  2.76T  4.46K    138   529M   728K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0591390      -      -  3.86K     25   121M   346K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0585214      -      -  3.04K     31  90.4M   362K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0510721      -      -  2.60K     50  76.6M   384K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0511490      -      -  3.08K     25  91.6M   382K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0590238      -      -  2.21K     23  67.6M   366K
    ata-WDC_WD40EFRX-68WT0N0_WD-WCC4E0590142      -      -  2.68K     14  83.2M   346K
cache                                             -      -      -      -      -      -
  scsi-3600605b0070e99501ae5db128ae4bdbc      19.2G   218G     31      6  92.7K  54.7K
--------------------------------------------  -----  -----  -----  -----  -----  -----




Now to figure out why I have two mmaps per read:

stat("/collections/tdr/ooe/836/ooe.b163334x/data/sip/data/files/ooe.b163334x.0087.jpg", {st_mode=S_IFREG|0644, st_size=1247597, ...}) = 0
open("/collections/tdr/ooe/836/ooe.b163334x/data/sip/data/files/ooe.b163334x.0087.jpg", O_RDONLY) = 3
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fffc7c714a8) = -1 ENOTTY (Inappropriate ioctl for device)
lseek(3, 0, SEEK_CUR)                   = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fffc7c71538) = -1 ENOTTY (Inappropriate ioctl for device)
fstat(3, {st_mode=S_IFREG|0644, st_size=1247597, ...}) = 0
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=1247597, ...}) = 0
mmap(NULL, 1247597, PROT_READ, MAP_SHARED, 3, 0) = 0x7fed4406a000
munmap(0x7fed4406a000, 1247597)         = 0
lseek(3, 0, SEEK_SET)                   = 0
lseek(3, 0, SEEK_CUR)                   = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=1247597, ...}) = 0
mmap(NULL, 1247597, PROT_READ, MAP_SHARED, 3, 0) = 0x7fed4406a000
munmap(0x7fed4406a000, 1247597)         = 0
lseek(3, 1247597, SEEK_SET)             = 1247597
lseek(3, 0, SEEK_CUR)                   = 1247597
fstat(3, {st_mode=S_IFREG|0644, st_size=1247597, ...}) = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=1247597, ...}) = 0
read(3, "", 8192)                       = 0
close(3)                                = 0