Recently I needed to speed up a legacy project(use zend framework 1.10.2),that project use zend_cache,I am new in zend framework. the default.ini configure:
data.cache.interim.frontend.name = "Core"
data.cache.interim.frontend.options.lifetime = 311040000 ; 10 years
data.cache.interim.backend.name = "File"
data.cache.interim.backend.options.cache_dir = "/cache/dp-interim/"
data.cache.interim.backend.options.hashed_directory_level = 3
There have 506790 cache files in /cache/dp-interim (run command: ls -lR | grep "^-" | wc -l on /cache/dp-interim get the result).
run "iotop",get the result: TOTAL DISK READ : 1034.22K/s
run "iostat",the result:
avg-cpu: %user %nice %system %iowait %steal %idle
1.80 0.00 0.77 51.80 0.00 45.62
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
xvdap1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
xvdb 48.00 0.00 245.00 0.00 2344.00 0.00 9.57 1.51 6.16 3.95 96.80
xvdap3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
xvdf 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
avg-cpu: %user %nice %system %iowait %steal %idle
2.05 0.00 1.03 45.90 0.00 51.03
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
xvdap1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
xvdb 43.00 0.00 214.00 0.00 2056.00 0.00 9.61 1.10 5.20 4.47 95.60
xvdap3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
xvdf 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
avg-cpu: %user %nice %system %iowait %steal %idle
2.06 0.00 0.26 46.91 0.00 50.77
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
xvdap1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
xvdb 62.00 0.00 196.00 0.00 2064.00 0.00 10.53 1.64 8.33 5.06 99.20
xvdap3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
xvdf 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
qavg-cpu: %user %nice %system %iowait %steal %idle
2.33 0.00 2.59 45.34 0.00 49.74
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
xvdap1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
xvdb 33.00 0.00 331.00 0.00 2912.00 0.00 8.80 0.99 3.01 2.68 88.80
xvdap3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
xvdf 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
It is the larger cache file cause the IO height? Thanks for you help!
