Linux command – Stressful Application Test (Memory)

前面有使用過 Stressful Application Test (Stressapptest) https://benjr.tw/96740 這邊針對他的 記憶體 測試詳細來做說明.

測試環境為 Ubuntu16.04 64bits

Memory

與記憶體相關的參數

• -s seconds : Number of seconds to run
• -M mbytes : Megabytes of ram to test
• -m threads : Number of memory copy threads to run.
• -C (c) threads : Number of memory CPU stress threads to run.-c (小寫) 會做 Data Check
• -i threads : Number of memory invert threads to run.

主要測試記憶體的參數是 -m (auto-detect to number of CPUs),就算不設定,預設系統會幫我們自動偵測 CPU 數,然後搭配一樣個數的 threads 來進行測試.此時透過 top 來觀看 CPU 的使用率幾乎都達 100%.

如果你還想再加入更多的 thread 來進行測試,可以使用 -C 繼續增加 thread ,或是 -i 加入 invert thread (一般的 thread 會將資料從一個區塊複製到另一個區塊,而 invert thread 會原地反轉資料.)

一般不指定 thread 透過 stressapptest 來自動偵測 (CPU 數然後搭配一樣個數的 thread).

root@ubuntu:~# stressapptest -s 60 -M 4000
Log: Commandline - stressapptest -s 60 -M 4000
Stats: SAT revision 1.0.6_autoconf, 64 bit binary
Log: buildd @ kapok on Wed Jan 21 17:09:35 UTC 2015 from open source release
Log: 1 nodes, 16 cpus.
Log: Defaulting to 16 copy threads
Log: Prefer plain malloc memory allocation.
Log: Using memaligned allocation at 0x7fb3d4412000.
Stats: Starting SAT, 4000M, 60 seconds
Log: Region mask: 0x1
Log: Seconds remaining: 50
Log: Seconds remaining: 40
Log: Seconds remaining: 30
Log: Seconds remaining: 20
Log: Seconds remaining: 10
Stats: Found 0 hardware incidents
Stats: Completed: 812878.00M in 60.05s 13537.25MB/s, with 0 hardware incidents, 0 errors
Stats: Memory Copy: 812878.00M at 13544.86MB/s
Stats: File Copy: 0.00M at 0.00MB/s
Stats: Net Copy: 0.00M at 0.00MB/s
Stats: Data Check: 0.00M at 0.00MB/s
Stats: Invert Data: 0.00M at 0.00MB/s
Stats: Disk: 0.00M at 0.00MB/s

Status: PASS - please verify no corrected errors

可以透過 #pstress 觀看 threads 數量 (總 threads : 18, CPU core 16 + 2 threads?)

root@ubuntu:~# pstree |grep -i stress
-gnome-terminal--+-bash---sudo---su---bash---stressapptest---18*[{stressapptest}]

透過 -c (小寫, 會做 Data Check) 繼續增加 threads 數量.

root@ubuntu:~# stressapptest -s 60 -M 4000 -c 8
Log: Commandline - stressapptest -s 60 -M 4000 -c 8
Stats: SAT revision 1.0.6_autoconf, 64 bit binary
Log: buildd @ kapok on Wed Jan 21 17:09:35 UTC 2015 from open source release
Log: 1 nodes, 16 cpus.
Log: Defaulting to 16 copy threads
Log: Prefer plain malloc memory allocation.
Log: Using memaligned allocation at 0x7f779000a000.
Stats: Starting SAT, 4000M, 60 seconds
Log: Region mask: 0x1
Log: Seconds remaining: 50
Log: Seconds remaining: 40
Log: Seconds remaining: 30
Log: Seconds remaining: 20
Log: Seconds remaining: 10
Stats: Found 0 hardware incidents
Stats: Completed: 897459.00M in 60.13s 14925.17MB/s, with 0 hardware incidents, 0 errors
Stats: Memory Copy: 693924.00M at 11563.15MB/s
Stats: File Copy: 0.00M at 0.00MB/s
Stats: Net Copy: 0.00M at 0.00MB/s
Stats: Data Check: 203535.00M at 3385.54MB/s
Stats: Invert Data: 0.00M at 0.00MB/s
Stats: Disk: 0.00M at 0.00MB/s

Status: PASS - please verify no corrected errors

(總 threads : 26), CPU core 16 + 8 + 2 threads?

root@ubuntu:~# pstree |grep -i stress
-gnome-terminal--+-bash---sudo---su---bash---stressapptest---26*[{stressapptest}]

加入 8個 invert threads 數量.

root@ubuntu:~# stressapptest -s 60 -M 4000 -i 8
Log: Commandline - stressapptest -s 60 -M 4000 -i 8
Stats: SAT revision 1.0.6_autoconf, 64 bit binary
Log: buildd @ kapok on Wed Jan 21 17:09:35 UTC 2015 from open source release
Log: 1 nodes, 16 cpus.
Log: Defaulting to 16 copy threads
Log: Prefer plain malloc memory allocation.
Log: Using memaligned allocation at 0x7fda35d62000.
Stats: Starting SAT, 4000M, 60 seconds
Log: Region mask: 0x1
Log: Seconds remaining: 50
Log: Seconds remaining: 40
Log: Seconds remaining: 30
Log: Seconds remaining: 20
Log: Seconds remaining: 10
Stats: Found 0 hardware incidents
Stats: Completed: 975798.00M in 60.03s 16255.22MB/s, with 0 hardware incidents, 0 errors
Stats: Memory Copy: 681182.00M at 11349.21MB/s
Stats: File Copy: 0.00M at 0.00MB/s
Stats: Net Copy: 0.00M at 0.00MB/s
Stats: Data Check: 0.00M at 0.00MB/s
Stats: Invert Data: 294616.00M at 4909.51MB/s
Stats: Disk: 0.00M at 0.00MB/s

Status: PASS - please verify no corrected errors

(總 threads : 26), CPU core 16 + 8 + 2 threads?

root@ubuntu:~# pstree |grep -i stress
-gnome-terminal--+-bash---sudo---su---bash---stressapptest---26*[{stressapptest}]