My macbook's virtualbox (running centos) got good results too (99% <20ms, 50% <7ms). Was hoping for some weirdness. It is running on an ssd (vintage 2011 macbook pro 13"), hdparm 250MB/sec, so not a great comparison. Only has 800MB allocated for the VM RAM, using Neo4j stock settings.
Wes On Thu, Jan 16, 2014 at 7:08 PM, Bill Scheidel <[email protected]> wrote: > Yeah, definitely not great. Odd though since I never had a problem when > working with Postgres or Mongo and they force things to disk as well. > Never had local requests take more than a couple of ms and then I switch > over to Neo4j and its almost unusable. There are no flags to change the > behavior for dev/test machines? > > > On Thursday, January 16, 2014 4:00:10 PM UTC-8, Michael Hunger wrote: > >> Not so good latency during the test, or? >> >> Here is my ioping (cool never heard of that one, nice tool). >> >> w/o ab >> --- /tmp/ (hfs /dev/disk0s2) ioping statistics --- >> 11 requests completed in 10.2 s, 32.1 k iops, 125.3 mb/s >> min/avg/max/mdev = 21 us / 31 us / 50 us / 7 us >> >> w ab >> 29 requests completed in 29.0 s, 33.1 k iops, 129.3 mb/s >> min/avg/max/mdev = 20 us / 30 us / 109 us / 17 us >> >> Am 17.01.2014 um 00:54 schrieb Bill Scheidel <[email protected]>: >> >> > And this is ioping without the ab test running: >> > >> > 31 requests completed in 30.5 s, 3.2 k iops, 12.5 mb/s >> > min/avg/max/mdev = 190 us / 312 us / 477 us / 63 us >> > >> > On Thursday, January 16, 2014 3:51:32 PM UTC-8, Bill Scheidel wrote: >> > I ran vmstat while running the ab test: >> > >> > procs -----------memory---------- ---swap-- -----io---- -system-- >> ----cpu---- >> > r b swpd free buff cache si so bi bo in cs us >> sy id wa >> > 0 1 0 2429284 161572 2133284 0 0 22 75 98 354 9 >> 8 80 2 >> > >> > I also ran ioping to check disk latency while the ab test was running: >> >> > >> > 190 requests completed in 3.3 min, 37 iops, 151.9 kb/s >> > min/avg/max/mdev = 192 us / 26.3 ms / 178.1 ms / 26.5 ms >> > >> > Results from the ab run: >> > >> > Percentage of the requests served within a certain time (ms) >> > 50% 150 >> > 66% 158 >> > 75% 166 >> > 80% 168 >> > 90% 209 >> > 95% 276 >> > 98% 300 >> > 99% 324 >> > 100% 366 (longest request) >> > >> > >> > >> > On Thursday, January 16, 2014 3:33:55 PM UTC-8, Michael Hunger wrote: >> > Let's continue this discussion here. >> > >> > To collect the other information so far: http://stackoverflow.com/ >> questions/21145723/neo4j-2-0-0-poor-performance-for-dev- >> test-in-a-virtual-machine >> > The GH issue you raised with Wes' and my answers: >> https://github.com/neo4j/neo4j/issues/1829 >> > >> > My "ab" tests: https://gist.github.com/jexp/8452037 >> > Wes' numbers: https://github.com/neo4j/neo4j/issues/1829# >> issuecomment-32564561 >> > >> > Your messages.log looks good to me. >> > >> > So it might be related to disk performance, could you run vmstat or >> similar while running the ab test? >> > >> > I think it is related to the forced fsync at commit which can be hit by >> a higher disk latency? >> > >> > Michael >> > >> > -- >> > You received this message because you are subscribed to the Google >> Groups "Neo4j" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> an email to [email protected]. >> > For more options, visit https://groups.google.com/groups/opt_out. >> >> -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
