Re: [ceph-users] Memory Allocators and Ceph

2015-05-28 Thread Robert LeBlanc
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 I've got some more tests running right now. Once those are done, I'll find a couple of tests that had extreme difference and gather some perf data for them. - Robert LeBlanc GPG Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA

Re: [ceph-users] Memory Allocators and Ceph

2015-05-27 Thread Mark Nelson
On 05/27/2015 04:00 PM, Robert LeBlanc wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On Wed, May 27, 2015 at 2:06 PM, Mark Nelson wrote: Compiling Ceph entirely with jemalloc overall had a negative performance impact. This may be due to dynamically linking to RocksDB instead of the

Re: [ceph-users] Memory Allocators and Ceph

2015-05-27 Thread Robert LeBlanc
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On Wed, May 27, 2015 at 2:06 PM, Mark Nelson wrote: >> Compiling Ceph entirely with jemalloc overall had a negative >> performance impact. This may be due to dynamically linking to RocksDB >> instead of the default static linking. > > > Is it possi

Re: [ceph-users] Memory Allocators and Ceph

2015-05-27 Thread Mark Nelson
On 05/27/2015 12:40 PM, Robert LeBlanc wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 With all the talk of tcmalloc and jemalloc, I decided to do some testing og the different memory allocating technologies between KVM and Ceph. These tests were done a pre-production system so I've tried

Re: [ceph-users] Memory Allocators and Ceph

2015-05-27 Thread Robert LeBlanc
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 The workload is on average, 17KB per read request and 13KB per write request with 73% read abd 27% write. This is a web hosting workload. - Robert LeBlanc GPG Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 On Wed, M

Re: [ceph-users] Memory Allocators and Ceph

2015-05-27 Thread Haomai Wang
On Thu, May 28, 2015 at 1:40 AM, Robert LeBlanc wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA256 > > With all the talk of tcmalloc and jemalloc, I decided to do some > testing og the different memory allocating technologies between KVM > and Ceph. These tests were done a pre-production s

[ceph-users] Memory Allocators and Ceph

2015-05-27 Thread Robert LeBlanc
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 With all the talk of tcmalloc and jemalloc, I decided to do some testing og the different memory allocating technologies between KVM and Ceph. These tests were done a pre-production system so I've tried to remove some the variance with many runs and