On 2015/04/02 14:38:53, Erik Corry Chromium.org wrote:
Splay performance is very positive: +14% on 32 bit, +5% on 64 bit
Splay latency is more mixed: +5% on 32 bit, -8% on 64 bit.
When I run 64 bit on the command line we are getting 6 scavenges, 6
mark-compacts during splay, where before we got 5 of each. The actual
pauses
don't look worse, there are just more of them.
However, the peak memory usage is much improved during Splay. Before:
Mark-sweep 488.5 (526.1) -> 99.7 (409.1) MB, 14.7 ms
After:
373.6 (415.1) -> 84.2 (379.1) MB, 10.0 ms
This is on a Mac, so freeing up 117 pages will actually cost us dearly
due to
munmap.
Strangely the patch makes scavenges slower and old space collections
faster.
I guess we are doing more incremental marking during scavenges with this
patch.
Is this tanking the SplayLatency score on 64bit?
https://codereview.chromium.org/1040233003/
--
--
v8-dev mailing list
v8-dev@googlegroups.com
http://groups.google.com/group/v8-dev
---
You received this message because you are subscribed to the Google Groups "v8-dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to v8-dev+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
