OLD | NEW |
1 # Tips for improving build speed on Linux | 1 # Tips for improving build speed on Linux |
2 | 2 |
3 This list is sorted such that the largest speedup is first; see | 3 This list is sorted such that the largest speedup is first; see |
4 [Linux build instructions](linux_build_instructions.md) for context and | 4 [Linux build instructions](linux_build_instructions.md) for context and |
5 [Faster Builds](common_build_tasks.md) for non-Linux-specific techniques. | 5 [Faster Builds](common_build_tasks.md) for non-Linux-specific techniques. |
6 | 6 |
7 [TOC] | 7 [TOC] |
8 | 8 |
9 ## Use goma | 9 ## Use goma |
10 | 10 |
11 If you work at Google, you can use goma for distributed builds; this is similar | 11 If you work at Google, you can use goma for distributed builds; this is similar |
(...skipping 125 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
137 | 137 |
138 ## Using tmpfs | 138 ## Using tmpfs |
139 | 139 |
140 You can use tmpfs for the build output to reduce the amount of disk writes | 140 You can use tmpfs for the build output to reduce the amount of disk writes |
141 required. I.e. mount tmpfs to the output directory where the build output goes: | 141 required. I.e. mount tmpfs to the output directory where the build output goes: |
142 | 142 |
143 As root: | 143 As root: |
144 | 144 |
145 mount -t tmpfs -o size=20G,nr_inodes=40k,mode=1777 tmpfs /path/to/out | 145 mount -t tmpfs -o size=20G,nr_inodes=40k,mode=1777 tmpfs /path/to/out |
146 | 146 |
| 147 *** note |
147 **Caveat:** You need to have enough RAM + swap to back the tmpfs. For a full | 148 **Caveat:** You need to have enough RAM + swap to back the tmpfs. For a full |
148 debug build, you will need about 20 GB. Less for just building the chrome target | 149 debug build, you will need about 20 GB. Less for just building the chrome target |
149 or for a release build. | 150 or for a release build. |
| 151 *** |
150 | 152 |
151 Quick and dirty benchmark numbers on a HP Z600 (Intel core i7, 16 cores | 153 Quick and dirty benchmark numbers on a HP Z600 (Intel core i7, 16 cores |
152 hyperthreaded, 12 GB RAM) | 154 hyperthreaded, 12 GB RAM) |
153 | 155 |
154 * With tmpfs: | 156 * With tmpfs: |
155 * 12m:20s | 157 * 12m:20s |
156 * Without tmpfs | 158 * Without tmpfs |
157 * 15m:40s | 159 * 15m:40s |
OLD | NEW |