Positions
- Chair, Outstanding Contribution to ACM Award Committee (2019 - 2020)
- Outstanding Contribution to ACM Award Committee Chair, Awards Committee (2016 - 2020)
- Member, Outstanding Contribution to ACM Award Committee (2016 - 2019)
- EiC, Transactions on Computer Systems, Journals and Magazines EiCs (2006 - 2010)
- Chair, SIGOPS (1997 - 1999)
- Conferences Approver, SIGOPS (1995 - 1997)
- Secretary/Treasurer, SIGOPS (1993 - 1995)