ES - Peformance GC

Hi,

Is there anyway to better config the GC in elasticsearch ?
I Have some problem, my GC stay very slow (3s).

[23:23:17,550][WARN ][monitor.jvm ] [Authority]
[gc][ParNew][113594][86817] duration [2.9s], collections [1]/[3.2s],
total [2.9s]/[58.8m], memory [1.1gb]->[1.1gb]/[9.7gb], all_pools
{[Code Cache] [11.1mb]->[11.1mb]/[48mb]}{[Par Eden Space]
[1.3mb]->[1.3mb]/[66.5mb]}{[Par Survivor Space]
[46.8kb]->[50.6kb]/[8.3mb]}{[CMS Old Gen]
[1.1gb]->[1.1gb]/[9.6gb]}{[CMS Perm Gen] [39.9mb]->[39.9mb]/[166mb]}

--
Gustavo Maia