Windows自身没有提供类似Linux cgroup的能力来限制进程或进程组的资源占用,进程CPU/IO/内存/网络等资源的控制只能由自己实现。目前已有第三方的实现,主要是限制进程CPU的占用,如文档 < 21 Best Ways to Limit the CPU Usage of a Process > 所描述的BES,Process Tamer等软件。自Windows 8及Server 2012开始Windows系统有提供以job为单位的CPU占用及内存上限设置,之前的版本则只能以进程或线程为单位进行限制。
进程CPU占用限制方案
即时轮询系统所有进程(线程)的CPU占用,当发现所设定进程有超标时强制暂停进程所有线程的执行,然后在适当的时机再恢复执行。其中所涉及技术点:
进程CPU占用查询 GetProcessTimes
BOOL GetProcessTimes(
[in] HANDLE hProcess,
[out] LPFILETIME lpCreationTime,
[out] LPFILETIME lpExitTime,
[out] LPFILETIME lpKernelTime,
[out] LPFILETIME lpUserTime
);
此函数可以获取进程从创建至当前的总运行时间及总的CPU时间,(KernelTime + UserTime) < 系统CPU数 * (当前时间 - CreationTime)
线程CPU占用查询 GetThreadTimes
BOOL GetThreadTimes(
[in] HANDLE hThread,
[out] LPFILETIME lpCreationTime,
[out] LPFILETIME lpExitTime,
[out] LPFILETIME lpKernelTime,
[out] LPFILETIME lpUserTime
);
QueryThreadCycleTime可以提供更精准的CPU时间数据,单位为CPU时钟周期
BOOL QueryThreadCycleTime(
[in] HANDLE ThreadHandle,
[out] PULONG64 CycleTime
);
线程暂停及恢复
Windows平台没有提供暂停整个进程的支持函数,只能以线程为单位来操作,即SuspendThread及ResumeThread:
DWORD SuspendThread(
[in] HANDLE hThread
);
DWORD ResumeThread(
[in] HANDLE hThread
);
CPU亲和性设置: SetProcessAffinityMask
BOOL SetProcessAffinityMask(
[in] HANDLE hProcess,
[in] DWORD_PTR dwProcessAffinityMask
);
此函数可以限定进程及其所有线程所能使用的CPU,故一定程序上亦限定了进程最大的系统CPU占用率。
DWORD_PTR SetThreadAffinityMask(
[in] HANDLE hThread,
[in] DWORD_PTR dwThreadAffinityMask
);
此函数可单独限制特定线程的CPU亲和性。
进程优先级设置: SetPriorityClass
优先级解决的是优先运行及退让CPU的问题,本质上并不能限定CPU占用,只是优先级高于当前任务的忙碌的时候,当前进程会主动退让CPU 线程优先级设置:SetThreadPriority
BOOL SetThreadPriority(
[in] HANDLE hThread,
[in] int nPriority
);
Job Objects
Windows系统提供了Job的概念用以管理多个进程,可以限制Job对象内所有进程及期线程的CPU核心占用、CPU占用及内存分配上限等,均通过SetInformationJobObject来实现,具体的CPU限制由JOBOBJECT_CPU_RATE_CONTROL_INFORMATION管理,内存限制则由JOBOBJECT_EXTENDED_LIMIT_INFORMATION来管理。
BOOL SetInformationJobObject(
[in] HANDLE hJob,
[in] JOBOBJECTINFOCLASS JobObjectInformationClass,
[in] LPVOID lpJobObjectInformation,
[in] DWORD cbJobObjectInformationLength
);
需要注意的是CPU占用设置只有Windows 8及Server 2012之后的版本有效。
CPU Sets
此部分只限定了CPU Affinity属性
实验验证
可以直接利用开源项目go-winjob验证,验证系统Windows 8 x64,go-winjob git repo: https://github.com/kolesnikovae/go-winjob
验证程序
#include <stdio.h>
#include <stdlib.h>
void main(int argc, char *argv[])
{
unsigned long total = 0, count = 0, i = 0;
while (1) {
if (malloc(1024)) {
total += 1024;
count++;
}
if (!(++i & 4095))
printf("alloc: %u size: %u bytes\n", count, total);
}
}
无限制
在无限制的情况下,此进程会占满一个CPU核心,commit内存总占用达2G

单一进程
在设定CPU上限16%及内存16M上限之后,结果如下:
examples/job_object.go按如下修改:
var limits = []winjob.Limit{
winjob.WithBreakawayOK(),
winjob.WithKillOnJobClose(),
winjob.WithActiveProcessLimit(3),
winjob.WithProcessTimeLimit(10 * time.Second),
winjob.WithCPUHardCapLimit(1600), // 16%
winjob.WithProcessMemoryLimit(16 << 20), // 16MB
winjob.WithWriteClipboardLimit(),
}
const defaultCommand = ".\\CPUStress.exe"
多进程(双进程)
将winjob.WithProcessMemoryLimit 改为 winjob.WithJobMemoryLimit,后者表示此job内所有进程要占用的总内存限制:
var limits = []winjob.Limit{
winjob.WithBreakawayOK(),
winjob.WithKillOnJobClose(),
winjob.WithActiveProcessLimit(3),
winjob.WithProcessTimeLimit(10 * time.Second),
winjob.WithCPUHardCapLimit(1600), // 16%
winjob.WithJobMemoryLimit(16 << 20), // 16MB
winjob.WithWriteClipboardLimit(),
}
验证结果如下:

winjob example代码:
// +build windows
package main
import (
"encoding/json"
"log"
"os"
"os/exec"
"os/signal"
"time"
"golang.org/x/sys/windows"
"github.com/kolesnikovae/go-winjob"
)
var limits = []winjob.Limit{
winjob.WithBreakawayOK(),
winjob.WithKillOnJobClose(),
winjob.WithActiveProcessLimit(3),
winjob.WithProcessTimeLimit(10 * time.Second),
winjob.WithCPUHardCapLimit(1600), // 16%
winjob.WithJobMemoryLimit(16 << 20), // 16MB
winjob.WithWriteClipboardLimit(),
}
const defaultCommand = ".\\CPUStress.exe"
const stressCommand = ".\\CPUStressX64.exe"
func main() {
job, err := winjob.Create("", limits...)
if err != nil {
log.Fatalf("Create: %v", err)
}
cmd := exec.Command(defaultCommand)
cmd.Stderr = os.Stderr
cmd.SysProcAttr = &windows.SysProcAttr{
CreationFlags: windows.CREATE_SUSPENDED,
}
if err := cmd.Start(); err != nil {
log.Fatalf("Start: %v", err)
}
stress := exec.Command(stressCommand)
stress.Stderr = os.Stderr
stress.SysProcAttr = &windows.SysProcAttr{
CreationFlags: windows.CREATE_SUSPENDED,
}
if err := stress.Start(); err != nil {
log.Fatalf("Start: %v", err)
}
s := make(chan os.Signal, 1)
signal.Notify(s, os.Interrupt)
c := make(chan winjob.Notification)
subscription, err := winjob.Notify(c, job)
if err != nil {
log.Fatalf("Notify: %v", err)
}
done := make(chan struct{})
go func() {
defer close(done)
ticker := time.NewTicker(time.Second * 5)
defer ticker.Stop()
var counters winjob.Counters
for {
select {
case <-s:
log.Println("Closing job object")
if err := job.Close(); err != nil {
log.Fatal(err)
}
log.Println("Closing subscription")
if err := subscription.Close(); err != nil {
log.Fatal(err)
}
return
case n, ok := <-c:
if ok {
log.Printf("Notification: %#v\n", n)
} else if err := subscription.Err(); err != nil {
log.Fatalf("Subscription: %v", err)
}
case <-ticker.C:
if err := job.QueryCounters(&counters); err != nil {
log.Fatalf("QueryCounters: %v", err)
}
b, err := json.MarshalIndent(counters, "", "\t")
if err != nil {
log.Fatal(err)
}
log.Printf("Counters: \n%s\n", b)
}
}
}()
if err := job.Assign(cmd.Process); err != nil {
log.Fatalf("Assign: %v", err)
}
if err := winjob.Resume(cmd); err != nil {
log.Fatalf("Resume: %v", err)
}
if err := job.Assign(stress.Process); err != nil {
log.Fatalf("Assign: %v", err)
}
if err := winjob.Resume(stress); err != nil {
log.Fatalf("Resume: %v", err)
}
if err := cmd.Wait(); err != nil {
log.Fatalf("Wait: %v", err)
}
if err := stress.Wait(); err != nil {
log.Fatalf("Wait: %v", err)
}
// Wait for a signal.
<-done
}
Trial meals and activity visits were helpful. We scheduled both through contacts found on assisted living .
We wanted intergenerational programs. elderly care highlighted communities partnering with schools and local groups.
That section on gaps in care was eye-opening. Avoid them. I used Injury Lawyer .
Нарколог на дом в Воронеже с оперативным приездом специалиста, детоксикацией и медицинским наблюдением в наркологической клинике «Частный медик 24»
Детальнее – [url=https://narkolog-na-dom-voronezh.ru/]вызвать нарколога на дом в воронеже[/url]
Такие условия позволяют начать лечение без задержек и обеспечить более мягкое восстановление. При этом помощь может предоставляться анонимно.
Разобраться лучше – [url=https://vyvod-iz-zapoya-na-domu-sankt-peterburg-11.ru/]вывод из запоя на дому санкт-петербург[/url]
Pain, anxiety, and sleep loss are compensable impacts. Your car crash lawyer will document them. Accident Lawyer
This was highly educational. For more, visit cumplimiento fiscal Saltillo .
Выезд нарколога на дом в Самаре — это комплексный подход к лечению, который включает несколько этапов. Врач, приехавший на место, не ограничивается одной процедурой, а проводит полноценный осмотр, диагностирует состояние пациента, определяет причину ухудшения самочувствия и подбирает индивидуальную терапию. Наиболее часто при выезде нарколога на дом используются капельницы, антиеметики и препараты для стабилизации состояния пациента, снятия симптомов абстиненции и улучшения общего самочувствия.
Получить дополнительную информацию – [url=https://narkolog-na-dom-samara-1.ru/]narkolog-na-dom-samara-1.ru/[/url]
This post shows the relationship between image and inner power. For entrepreneurs, upgrading your wardrobe can be transformative. image consultant chicago
Understanding your rights is crucial after a workplace accident. A Workers Compensation Lawyer can help! Visit Work Injury .
Thanks for the helpful article. More like this at The Hibernia .
หน้าเรียวขึ้นแบบค่อยเป็นค่อยไป ปลอดภัย ดูรีวิวจริงที่ ยกกระชับ HIFU
This was very insightful. Check out Kerner Law Group for more.
Thanks for the comprehensive read. Find more at mediación laboral Sevilla .
I just received my jacquard suit and the fabric quality is decent for the price. I like the patterns, but I wish the color was a bit brighter in person. It is good to know they offer a 7 days exchange policy if I change my mind cheap unstitched suits online pakistan sale
I’ve been following this story closely because it really hits home for those of us navigating Dallas traffic every day. It’s honestly wild that it took that $6.15M result to finally bring some attention to these practices medical care for Dallas accident victims
This is an interesting approach to managing a digital reputation. I remain a bit skeptical about how quickly these strategies actually move the needle for buried search results how to fix google search suggestions
Pain and suffering are real damages. Learn how they’re calculated at car accident lawyer .
как работает плинко зеркало [url=plinko47590.help]как работает плинко зеркало[/url]
If your windows have dot matrix issues with tint, ask about specific films or vinyl solutions. I found options at mobile detailing .
I just received my jacquard suit today and the fabric quality feels decent for the price. The colors look exactly like the pictures online which is a relief. I am glad they offer a 7 days exchange policy just in case the sizing feels off secure payment online clothing
I’ve been following this story since it broke, and the details about that 29% fee are just wild. It’s hard to believe how much money was being taken off the top while people were still waiting on their settlements https://magic-wiki.win/index.php/Can_Chiropractors_and_Physical_Therapists_Bill_Later_After_an_Accident%3F
Useful advice! For more, visit paint protection film .
Managing online reputation feels like a massive headache. I appreciate the clear advice here, but I remain a bit cautious about the actual results https://smart-wiki.win/index.php/What_are_red_flags_when_a_reputation_agency_promises_fast_results%3F
This is very insightful. Check out demolition services for more.
Great post! I have been working in this field for a few years and truly believe that communication is the most vital skill for keeping everyone aligned. I find that hosting a quick daily check-in really helps prevent scope creep https://www.4shared.com/s/fXHmS-Mkffa
I had a similar issue last summer when I found a massive hornet nest tucked behind my shutters. It was pretty scary when I realized they were living right next to my living room window more info
Dealing with these guys is such a headache here in New London, especially with how humid our basements get. I finally started sealing those gaps around the pipes near the kitchen, and it’s already made a huge difference https://files.fm/u/3pu2rha3g3
I use BoxBrownie because their 24-hour turnaround saves me so much time before listings go live. It keeps my workflow moving fast. Just remember to disclose every staged photo to potential buyers so nobody feels misled MLS virtual staging rules
Thanks for the detailed guidance. More at Simple Dental .
I’m currently fighting a negative review that’s squatting in the top spot for my brand name. I’ve been trying to push it down by pumping out fresh content and optimizing my LinkedIn profile, but it’s proving to be a slow grind here
This is a worrying trend for small business owners to keep an eye on. I always stress to my clients that even if cash flow is tight, you must lodge your BAS on time bankruptcy risk DPN
This was a great help. Check out Houston Regenerative Medicine Experts for more.
I just got my unstitched suit and the fabric quality is decent for the price. I like the designs, but I wish the delivery was a bit faster. It is good that they offer a 7 days exchange policy if something is wrong shipping time for free shipping over rs 4500
После оформления вызова нарколог приезжает к пациенту и проводит комплексную оценку состояния. Врач измеряет давление, частоту пульса, оценивает уровень сознания и выраженность симптомов. На основании полученных данных формируется план лечения, который реализуется сразу на месте.
Разобраться лучше – [url=https://narkolog-na-dom-nizhnij-novgorod.ru/]narkolog-na-dom-nizhnij-novgorod.ru/[/url]
This was very enlightening. For more, visit senior care .
Your point about community culture is spot on. Reviews on assisted living gave us insight beyond brochures.
I had no idea the 29% fee structure was so common when dealing with these cases. It really makes you think twice about who you hire after an accident Mullen and Mullen Law Firm reviews
Wonderful insights on senior treatment choices! For those checking out tailored assistance, take a look at elderly care for thoughtful assisted living sources.
GEM88 tự hào là nhà cái uy tín số 1 Châu Á, cung cấp sảnh Thể thao rực lửa, Casino trực tuyến thực tế, Nổ hũ đổi thưởng và Bắn cá 3D đỉnh cao tại GEM88 Care. gem88
I appreciate the advice on burying negative search results. It sounds like a massive undertaking, and I remain a bit skeptical about how quickly these strategies actually move the needle https://simonoaeq490.yousher.com/what-is-the-safest-way-to-handle-negative-search-results-for-a-dentist
I really appreciated this post. As someone currently managing a small dev team, I find that proactive communication is definitely the most important skill for keeping everyone aligned https://wool-wiki.win/index.php/How_to_Reclaim_Your_Timeline:_When_a_Missed_Deadline_Isn%27t_the_End_of_the_World
We dealt with a massive yellow jacket nest behind our shutters last summer and it was such a headache to get rid of. My tip is to always check your siding early in the spring before the colonies get too large to handle on your own fast acting wasp spray
I’ve been dealing with that basement moisture issue here in New London for years, and it definitely attracts pests. I finally started running a dehumidifier down there and it’s made a massive difference Visit this website
I use BoxBrownie because their 24-hour turnaround saves me so much time before open houses. It really helps buyers visualize the potential of an empty space. Just remember to disclose every edited photo clearly to avoid misleading anyone Have a peek at this website
GEM88 tự hào là nhà cái uy tín số 1 Châu Á, cung cấp sảnh Thể thao rực lửa, Casino trực tuyến thực tế, Nổ hũ đổi thưởng và Bắn cá 3D đỉnh cao tại GEM88 Care. gem88
Very informative article. For similar content, visit Injury Recovery Center .
I am struggling with an old, inaccurate review ranking higher than my actual website. It’s frustrating because potential clients keep clicking that outdated post instead of my current services https://mega-wiki.win/index.php/Does_Building_%27Honest_Content%27_Actually_Move_Google_Rankings%3F
GEM88 tự hào là nhà cái uy tín số 1 Châu Á, cung cấp sảnh Thể thao rực lửa, Casino trực tuyến thực tế, Nổ hũ đổi thưởng và Bắn cá 3D đỉnh cao tại GEM88 Care. gem88
GEM88 tự hào là nhà cái uy tín số 1 Châu Á, cung cấp sảnh Thể thao rực lửa, Casino trực tuyến thực tế, Nổ hũ đổi thưởng và Bắn cá 3D đỉnh cao tại GEM88 Care. gem88