Re: 回复： PHP Performance/Scalability

Hello Deepak, 2. OK 3. By execution time I mean how long takes to execute the Java application isolating it from 'HTTP Time" check this out to execute the .jsp from cli: https://stackoverflow.com/a/23550396 and https://docs.oracle.com/cd/E19146-01/821-0790/abxcc/index.html TTFB = "time_starttransfer" - time_pretransfer -> Taking from the 'curl' PHP Execution = time php script.php (user + sys time) HTTP Time = TTFB - PHP Execution If not possible to execute the Java App from cli, then: Execution time for the Java App = Java TTFB - "HTTP time" (Calculated from the PHP Execution) It will be an assumption, since the JAVA <-> HTTP connection is very different from PHP <-> HTTP Connection Then, try to get the Java Execution time from cli --- Looks like my guess of having 4 CPU (2 Core * 2 threads) was right. Regards, José Nobile On Fri, Oct 29, 2021 at 3:22 AM Deepak Goel <deicool@gmail.com> wrote: > Hello Jose > > 1. We are using Apache FPM > > 2. TTFB for both the apps will need some work from my side > > 3. Sorry, I am a bit confused, what do you mean by *execution time*? > > 4. Machine Configuration: > > Architecture: x86_64 > CPU op-mode(s): 32-bit, 64-bit > Byte Order: Little Endian > Address sizes: 46 bits physical, 48 bits virtual > CPU(s): 4 > On-line CPU(s) list: 0-3 > Thread(s) per core: 2 > Core(s) per socket: 2 > Socket(s): 1 > NUMA node(s): 1 > Vendor ID: GenuineIntel > CPU family: 6 > Model: 79 > Model name: Intel(R) Xeon(R) CPU E5-2686 v4 @ 2.30GHz > > (Please note, the cpu utilisation never goes beyond 10-15% even if the > load is increased to 6000 users from 1500 users) > > Thank You. > > Deepak > "The greatness of a nation can be judged by the way its animals are > treated - Mahatma Gandhi" > > +91 73500 12833 > deicool@gmail.com > > Facebook: https://www.facebook.com/deicool > LinkedIn: www.linkedin.com/in/deicool > > "Plant a Tree, Go Green" > > Make In India : http://www.makeinindia.com/home > > > On Fri, Oct 29, 2021 at 12:37 PM Jose Nobile <jose.nobile@gmail.com> > wrote: > >> Hello Deepak, >> >> 26 msecs -> 38 reqs/sec/thread -> If a CPU with 16 threads, then 615 >> reqs/sec >> You are reaching 150 reqs/sec, it can mean: >> 1. You have 4 threads CPU (2 Core * 2 Threads or 4 Core * 1 Thread) >> 2. If you have 16 threads, but the HTTP -> PHP Connection is taking about >> 80 msecs >> >> Questions: >> >> 1. How many CPU Threads does the system have? >> 2. How are you connecting HTTP to PHP? Apache mod_php, Apache/NGINX FPM, >> Apache mod_lsapi or Litespeed webserver? >> >> The jsp execution by cli was not successful, check this: >> https://stackoverflow.com/a/23550396 and >> >> https://docs.oracle.com/cd/E19146-01/821-0790/abxcc/index.html >> >> If not possible execute java from cli, the closest thing is to measure >> the TTFB (Time to first byte): >> >> A one time step: >> echo "time_namelookup: %{time_namelookup}\n >> time_connect: %{time_connect}\n >> time_appconnect: %{time_appconnect}\n >> time_pretransfer: %{time_pretransfer}\n >> time_redirect: %{time_redirect}\n >> time_starttransfer: %{time_starttransfer}\n >> ----------\n >> time_total: %{time_total}\n" > curl-format.txt >> >> you should see: >> cat curl-format.txt >> time_namelookup: %{time_namelookup}\n >> time_connect: %{time_connect}\n >> time_appconnect: %{time_appconnect}\n >> time_pretransfer: %{time_pretransfer}\n >> time_redirect: %{time_redirect}\n >> time_starttransfer: %{time_starttransfer}\n >> ----------\n >> time_total: %{time_total}\n >> >> Then, >> >> curl -4 -sH 'Accept-encoding: br,gzip' -w "@curl-format.txt" -o >> /dev/null >> -s https://localhost/yourpathtojava >> >> My output from a PHP application connected via Litespeed Enterprise: >> >> time_namelookup: 0.060 >> time_connect: 0.060 >> time_appconnect: 0.125 >> time_pretransfer: 0.125 >> time_redirect: 0.000 >> time_starttransfer: 0.125 >> ---------- >> time_total: 0.126 >> >> It means the TTFB is 126-60 = 65 msecs is the time between the HTTP >> Request is sent and the response from the webapp starts answering (returns >> the first byte) >> >> Then, we could assume 65 msecs is the execution time itself from the >> webapp (PHP or Java) >> >> It would be the nearest measurement if the app cannot run from cli. BUT, >> If I run the same script which from the HTTP interface give me a 65 msecs >> TTFB: >> >> time php index.php > /dev/null >> >> real 0m0.029s >> user 0m0.017s >> sys 0m0.012s >> >> It means the HTTP interface is taking about 36 msecs (HTTP decode + TLS >> decryption) "HTTP Time" >> >> Test the TTFB for both apps, calculate the "HTTP time" for PHP, then the >> execution time for the Java App would be TTFB - "HTTP time" (Calculated >> from the PHP Execution). >> >> 3. What is the TTFB for both apps? >> 4. What is the execution time for both apps? >> >> >> Regards, >> José Nobile >> >> >> On Fri, Oct 29, 2021 at 1:28 AM Deepak Goel <deicool@gmail.com> wrote: >> >>> Hello >>> >>> For php (time php login.php): >>> >>> real 0m0.026s >>> user 0m0.012s >>> sys 0m0.014s >>> >>> For Java (time java login.jsp): >>> >>> Error: Could not find or load main class login.jsp >>> Caused by: java.lang.ClassNotFoundException: login.jsp >>> >>> Deepak >>> "The greatness of a nation can be judged by the way its animals are >>> treated - Mahatma Gandhi" >>> >>> +91 73500 12833 >>> deicool@gmail.com >>> >>> Facebook: https://www.facebook.com/deicool >>> LinkedIn: www.linkedin.com/in/deicool >>> >>> "Plant a Tree, Go Green" >>> >>> Make In India : http://www.makeinindia.com/home >>> >>> >>> >>> On Thu, Oct 28, 2021 at 11:46 PM Deepak Goel <deicool@gmail.com> wrote: >>> >>>> Hi >>>> >>>> Let me check it out. Will get back. >>>> >>>> Also, has anyone deployed PHP and it has scaled vertically to a higher >>>> number of users? Can you please post the results and the machine >>>> configuration details? It will help. >>>> >>>> Thanks. >>>> >>>> On Thu, 28 Oct 2021, 23:39 Jose Nobile, <jose.nobile@gmail.com> wrote: >>>> >>>>> Hi, >>>>> I have read all the threads, I'm updated! >>>>> >>>>> The waits that I've mentioned before are a signal that can prevent you >>>>> from using the available CPU. For example, what ifis the PHP has to read >>>>> an external HTTP resource that needs to fetch? It will be in the wait time >>>>> (network IO), rather than be speculative, test it. >>>>> >>>>> You should execute the exact same code when executing from cli than >>>>> the HTTP interface, just to isolate the issue and some tests. >>>>> >>>>> >>>>> Regards, >>>>> José Nobile >>>>> >>>>> >>>>> On Thu, Oct 28, 2021 at 12:43 PM Deepak Goel <deicool@gmail.com> >>>>> wrote: >>>>> >>>>>> Hello Jose >>>>>> >>>>>> 1. Got it! I will try this tom afternoon (IST) and pass on the >>>>>> results. >>>>>> >>>>>> 2. However most of the php scripts are called from the web and not >>>>>> the command line. Also not all the methods are called. Typically, 1 out of >>>>>> 10 methods are called. (I am unsure how this would compare with the cli >>>>>> time command). I guess we would have to divide by 10. >>>>>> >>>>>> 3. Also there is plenty of CPU available when I run a performance >>>>>> test on PHP. Only 10-15% is consumed. This would indicate that there is >>>>>> some synchronization happening in the PHP Infrastructure which is >>>>>> preventing the full usage of CPU (I don't see this in Java). >>>>>> >>>>>> 4. If I run a Java test, the result scales upto 6000+ users. For PHP, >>>>>> everything remains the same (code, cpu, db) but it scales only to 1500 >>>>>> users. There is no IO wait. And CPU/Memory are utilized only to 15%. >>>>>> >>>>>> Thanks! >>>>>> >>>>>> Deepak >>>>>> "The greatness of a nation can be judged by the way its animals are >>>>>> treated - Mahatma Gandhi" >>>>>> >>>>>> +91 73500 12833 >>>>>> deicool@gmail.com >>>>>> >>>>>> Facebook: https://www.facebook.com/deicool >>>>>> LinkedIn: www.linkedin.com/in/deicool >>>>>> >>>>>> "Plant a Tree, Go Green" >>>>>> >>>>>> Make In India : >>>>>> http://www.makeinindia.com/home >>>>>> >>>>>> >>>>>> On Thu, Oct 28, 2021 at 9:05 PM Jose Nobile <jose.nobile@gmail.com> >>>>>> wrote: >>>>>> >>>>>>> Hello Deepak, >>>>>>> >>>>>>> Test it using cli >>>>>>> >>>>>>> > time php yourscript.php >>>>>>> >>>>>>> What are the results for the time command? >>>>>>> >>>>>>> For example: >>>>>>> time /opt/alt/php80/usr/bin/php test.php >>>>>>> 1 >>>>>>> real 0m0.010s >>>>>>> user 0m0.006s >>>>>>> sys 0m0.003s >>>>>>> >>>>>>> It means each request is going to take 6 msecs from Linux user CPU >>>>>>> + 3 msecs from Linux system CPU + 1 msec from IO or other waits. >>>>>>> >>>>>>> You should compare this to the Java applications testing in the same >>>>>>> way, cli, no other process should be running (just the kernel and sys >>>>>>> processes). >>>>>>> >>>>>>> In this example, each request can be completed in 9 msecs from CPU + >>>>>>> 1 msec from waits, at CPU level, it can handle 100 requests/sec per CPU >>>>>>> thread, if it is a 16 threads CPU, it could handle 1600 reqs/sec >>>>>>> >>>>>>> The HTTP interface can add some CPU, also the TLS (Elliptic curve >>>>>>> are super fast, or the ciphers for TLS 1.3), it got under 1 msec when >>>>>>> the >>>>>>> HTTP interface is LSAPI from Litespeed Enterprise, which better than >>>>>>> PHP-FPM, but first focus in the program itself, testing from cli, each >>>>>>> individual requests optimizing at all levels, a kernel updated, NVMe >>>>>>> for >>>>>>> storage, DDR4 ECC 2933MHz, just loading the required PHP extensions, >>>>>>> profiling SQL queries to be as efficient as possible anything from 1 >>>>>>> msec >>>>>>> or more can represent hundreds of potential more reqs/sec. >>>>>>> >>>>>>> What are the results of the PHP and the Java program executed from >>>>>>> cli in a dedicated system? >>>>>>> >>>>>>> >>>>>>> Regards, >>>>>>> José Nobile >>>>>>> >>>>>>> >>>>>>> On Thu, Oct 28, 2021 at 8:28 AM Deepak Goel <deicool@gmail.com> >>>>>>> wrote: >>>>>>> >>>>>>>> Hello Shiplu >>>>>>>> >>>>>>>> The resources mentioned by you are not a bottleneck. There is >>>>>>>> plenty of it available. >>>>>>>> >>>>>>>> Deepak >>>>>>>> "The greatness of a nation can be judged by the way its >>>>>>>> animals >>>>>>>> are treated - Mahatma Gandhi" >>>>>>>> >>>>>>>> +91 73500 12833 >>>>>>>> deicool@gmail.com >>>>>>>> >>>>>>>> Facebook: https://www.facebook.com/deicool�A���*N >>>>>>>> ��|= >>>>>>>> LinkedIn: www.linkedin.com/in/deicool >>>>>>>> >>>>>>>> "Plant a Tree, Go Green" >>>>>>>> >>>>>>>> Make In India : >>>>>>>> http://www.makeinindia.com/home >>>>>>>> >>>>>>>> >>>>>>>> On Thu, Oct 28, 2021 at 2:15 PM shiplu <shiplu.net@gmail.com> >>>>>>>> wrote: >>>>>>>> >>>>>>>>> Hello Deepak, >>>>>>>>> >>>>>>>>> If the code itself has a performance problem then it would show >>>>>>>>> up >>>>>>>>> even when the concurrency is 1. But it shows the issue when >>>>>>>>> concurrency >>>>>>>>> hits 1500. From 1 to 1500 there is the number when the response >>>>>>>>> time starts >>>>>>>>> to increase. That's where the problem arises. You >>>>>>>>> mentioned it worked when >>>>>>>>> increased the number of VMs. Check the system resource >>>>>>>>> statistics when you >>>>>>>>> are requesting to multiple VMs and a single VM. >>>>>>>>> >>>>>>>>> It can happen that a metric is very high when you are using a >>>>>>>>> single VM solution with 1500 concurrent requests. And the same >>>>>>>>> metric would >>>>>>>>> be very low in horizontal scaling setup. Some of these metrics >>>>>>>>> can be >>>>>>>>> 1. CPU >>>>>>>>> 2. Memory >>>>>>>>> 3. IOWait time >>>>>>>>> 4. Request Queue size >>>>>>>>> 5. Open file descriptors >>>>>>>>> This is a metric you need to find out yourself. Once you find >>>>>>>>> the >>>>>>>>> metric you'll know horizontal scaling made it possible to >>>>>>>>> lower it. Then >>>>>>>>> for vertical scaling, you just need to increase that. >>>>>>>>> >>>>>>>>> >>>>>>>>> ― >>>>>>>>> Shiplu.Mokadd.im >>>>>>>>> Senior Unix Hacker >>>>>>>>> >>>>>>>>> *Innovation distinguishes between follower and leader* >>>>>>>>> — Steve Jobs >>>>>>>>> >>>>>>>>> >>>>>>>>> *An expert is a person who has made all the mistakes that can >>>>>>>>> be >>>>>>>>> made in a very narrow field.*— Niels Bohr >>>>>>>>> >>>>>>>>> >>>>>>>>> On Thu, Oct 28, 2021 at 9:35 AM Deepak Goel >>>>>>>>> <deicool@gmail.com> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>>> We are using CodeIgniter 3.1. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Deepak >>>>>>>>>> "The greatness of a nation can be judged by the way >>>>>>>>>> its animals >>>>>>>>>> are treated - Mahatma Gandhi" >>>>>>>>>> >>>>>>>>>> +91 73500 12833 >>>>>>>>>> deicool@gmail.com >>>>>>>>>> >>>>>>>>>> Facebook: >>>>>>>>>> https://www.facebook.com/deicool >>>>>>>>>> LinkedIn: www.linkedin.com/in/deicool >>>>>>>>>> >>>>>>>>>> "Plant a Tree, Go Green" >>>>>>>>>> >>>>>>>>>> Make In India : >>>>>>>>>> http://www.makeinindia.com/home >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On Thu, Oct 28, 2021 at 1:03 PM Torsten Rosenberger < >>>>>>>>>> rosenberger@taoweb.at> wrote: >>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> > >>>>>>>>>>> > Some thoughts: >>>>>>>>>>> > >>>>>>>>>>> > 1. We are using a simple SQL Query in the code >>>>>>>>>>> > $data = >>>>>>>>>>> > $this->db->select('user_id,email') >>>>>>>>>>> > >>>>>>>>>>> > ->where(array('email' => >>>>>>>>>>> $email_address)) >>>>>>>>>>> > >>>>>>>>>>> > ->order_by('user_id', 'DESC') >>>>>>>>>>> > ->limit(1) >>>>>>>>>>> > >>>>>>>>>>> > ->get('users') >>>>>>>>>>> > ->row_array(); >>>>>>>>>>> looks like you are using laraval >>>>>>>>>>> >>>>>>>>>>> so i would start with $start = >>>>>>>>>>> microtime(true); >>>>>>>>>>> >>>>>>>>>>> run you db code and the microtime(true) - $start; >>>>>>>>>>> >>>>>>>>>>> and >>>>>>>>>>> compare this when you rewrite the code with native >>>>>>>>>>> mysqli >>>>>>>>>>> functions >>>>>>>>>>> like >>>>>>>>>>> mysqli_query >>>>>>>>>>> >>>>>>>>>>> I know this is work but so you can get the feeling >>>>>>>>>>> which >>>>>>>>>>> one is faster. >>>>>>>>>>> In small application you use frameworks but there could >>>>>>>>>>> be cases where a normal function ist much faster as >>>>>>>>>>> writing a >>>>>>>>>>> class >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> > 2. We are using mysqli >>>>>>>>>>> > >>>>>>>>>>> > 3. The SQL Query takes time in msec. And the >>>>>>>>>>> > Database is not a >>>>>>>>>>> > performance bottleneck >>>>>>>>>>> That could be OK for the database. But as in point 1. >>>>>>>>>>> so the >>>>>>>>>>> query >>>>>>>>>>> could be fast but the layer above could be slow. >>>>>>>>>>> >>>>>>>>>>> I thing when you >>>>>>>>>>> compare the code sections with microtime you will find >>>>>>>>>>> the part >>>>>>>>>>> eating >>>>>>>>>>> the time in the script. >>>>>>>>>>> > >>>>>>>>>>> > 4. We use mostly images with <img >>>>>>>>>>> > src=""> >>>>>>>>>>> > >>>>>>>>>>> > 5. We have seen fpm outperform mod_php >>>>>>>>>>> > >>>>>>>>>>> > 6. The Java code accesses the same database (The >>>>>>>>>>> > database is >>>>>>>>>>> on a >>>>>>>>>>> > seperate physical server). Also the queries are >>>>>>>>>>> > the same in >>>>>>>>>>> Java as >>>>>>>>>>> > well PHP >>>>>>>>>>> > >>>>>>>>>>> > 7. I will try instrumenting the entire PHP code >>>>>>>>>>> > and see where >>>>>>>>>>> the >>>>>>>>>>> > bottleneck is. >>>>>>>>>>> > >>>>>>>>>>> > Deepak >>>>>>>>>>> > "The greatness of a nation can be judged by >>>>>>>>>>> > the way its >>>>>>>>>>> animals are >>>>>>>>>>> > treated - Mahatma Gandhi" >>>>>>>>>>> > >>>>>>>>>>> > +91 73500 12833 >>>>>>>>>>> > deicool@gmail.com >>>>>>>>>>> > >>>>>>>>>>> > Facebook: >>>>>>>>>>> > https://www.facebook.com/deicool >>>>>>>>>>> > LinkedIn: www.linkedin.com/in/deicool >>>>>>>>>>> > >>>>>>>>>>> > "Plant a Tree, Go Green" >>>>>>>>>>> > >>>>>>>>>>> > Make In India : >>>>>>>>>>> > http://www.makeinindia.com/home >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> > On Thu, Oct 28, 2021 at 11:23 AM Torsten >>>>>>>>>>> > Rosenberger < >>>>>>>>>>> > rosenberger@taoweb.at> wrote: >>>>>>>>>>> > > Hello Deepak >>>>>>>>>>> > > >>>>>>>>>>> > > I think PHP-FPM had heavily reduce the >>>>>>>>>>> > > concurrency of PHP. >>>>>>>>>>> > > > PHP should immediately implement a API >>>>>>>>>>> > > > like WSGI/ASGI in >>>>>>>>>>> python. >>>>>>>>>>> > > It >>>>>>>>>>> > > > is very simple but very useful. >>>>>>>>>>> > > > >>>>>>>>>>> > > > ------------------ 原始邮件 >>>>>>>>>>> > > > ------------------ >>>>>>>>>>> > > > 发件人: "Deepak Goel" >>>>>>>>>>> > > > <deicool@gmail..com>; >>>>>>>>>>> > > > 发送时间: >>>>>>>>>>> > > > 2021年10月26日(星期二) 晚上11:15 >>>>>>>>>>> > > > 收件人: >>>>>>>>>>> > > > "Alex"<al-php@none.at>; >>>>>>>>>>> > > > 抄送: "php-general General >>>>>>>>>>> > > > List"<php-general@lists.php.net >>>>>>>>>>> >;"Deepak >>>>>>>>>>> > > > Sharma"<deepak@techxp.tech>; >>>>>>>>>>> > > > 主题: Re: PHP Performance/Scalability >>>>>>>>>>> > > > >>>>>>>>>>> > > > Hi >>>>>>>>>>> > > > >>>>>>>>>>> > > > The code is fairly simple. It contains a >>>>>>>>>>> > > > few images and a >>>>>>>>>>> simple >>>>>>>>>>> > > SQL >>>>>>>>>>> > > > query (The same code in Java gives >>>>>>>>>>> > > > superb performance). We >>>>>>>>>>> have >>>>>>>>>>> > > an >>>>>>>>>>> > > > Apache Web Server in front of php as of >>>>>>>>>>> > > > now. And I will >>>>>>>>>>> try out >>>>>>>>>>> > > this >>>>>>>>>>> > > > (https://github.com/spiral/roadrunner). >>>>>>>>>>> > > >>>>>>>>>>> > > We are talking about a blackbox. >>>>>>>>>>> > > The code is simple ? >>>>>>>>>>> > > >>>>>>>>>>> > > How long take's >>>>>>>>>>> > > the sql query ? >>>>>>>>>>> > > What do you use to access the database PDO or >>>>>>>>>>> > > mysqli ? >>>>>>>>>>> > > Y >>>>>>>>>>> > > ou wrote java is faster. Your java code >>>>>>>>>>> > > access the same >>>>>>>>>>> database ? >>>>>>>>>>> > > >>>>>>>>>>> > > You wrote a few images ? >>>>>>>>>>> > > Do you only show the images with <img >>>>>>>>>>> > > src=""> >>>>>>>>>>> > > or are you converting them for thumbnails >>>>>>>>>>> > > etc. >>>>>>>>>>> > > >>>>>>>>>>> > > A long time ago there was a great >>>>>>>>>>> > > presentation from Rasmus >>>>>>>>>>> about >>>>>>>>>>> > > PHP >>>>>>>>>>> > > Performance. >>>>>>>>>>> > > >>>>>>>>>>> > > So a simple query on my Server's with >>>>>>>>>>> > > mod_php and mysql >>>>>>>>>>> > > takes 0.0001 to 0.0008 seconds. If the >>>>>>>>>>> > > simple query takes >>>>>>>>>>> 0.01 >>>>>>>>>>> > > Second >>>>>>>>>>> > > which looks fast but php have to wait for the >>>>>>>>>>> > > DB. So there >>>>>>>>>>> you can >>>>>>>>>>> > > loose factor 100 in the req/sec. >>>>>>>>>>> > > >>>>>>>>>>> > > Why are you using fpm and not the mod_php >>>>>>>>>>> > > part in apache ? >>>>>>>>>>> > > OPcache is >>>>>>>>>>> > > active ? >>>>>>>>>>> > > >>>>>>>>>>> > > There are a lot of parameters we don't >>>>>>>>>>> > > know. >>>>>>>>>>> > > >>>>>>>>>>> > > If you benchmark >>>>>>>>>>> > > your code with an easy microtime(true) call >>>>>>>>>>> > > to see how long >>>>>>>>>>> your >>>>>>>>>>> > > script >>>>>>>>>>> > > takes. >>>>>>>>>>> > > If you store the data in a file when you run >>>>>>>>>>> > > your benchmark >>>>>>>>>>> you >>>>>>>>>>> > > can maybe see if a code part is waiting for >>>>>>>>>>> > > the database or >>>>>>>>>>> > > something >>>>>>>>>>> > > else. >>>>>>>>>>> > > So that the bottleneck ist not php. >>>>>>>>>>> > > >>>>>>>>>>> > > So i would go through the code >>>>>>>>>>> > > with microtime() an look what takes long and >>>>>>>>>>> > > then go >>>>>>>>>>> deepter. >>>>>>>>>>> > > >>>>>>>>>>> > > if the >>>>>>>>>>> > > code is heavy and the result dosen't >>>>>>>>>>> > > change or a refresh >>>>>>>>>>> after 5 >>>>>>>>>>> > > min is >>>>>>>>>>> > > ok you can use the APCu cache or so on. >>>>>>>>>>> > > >>>>>>>>>>> > > If your code is super fast an still slow >>>>>>>>>>> > > requests then you >>>>>>>>>>> have to >>>>>>>>>>> > > strace the apache process to see if there is >>>>>>>>>>> > > something miss >>>>>>>>>>> > > configured. >>>>>>>>>>> > > >>>>>>>>>>> > > >>>>>>>>>>> > > So as a PHP developer we cann't accept >>>>>>>>>>> > > that Java is faster :) >>>>>>>>>>> > > >>>>>>>>>>> > > BR/Torsten >>>>>>>>>>> > > >>>>>>>>>>> > > > Thanks. >>>>>>>>>>> > > > >>>>>>>>>>> > > > Deepak >>>>>>>>>>> > > > "The greatness of a nation can be >>>>>>>>>>> > > > judged by the way its >>>>>>>>>>> animals >>>>>>>>>>> > > are >>>>>>>>>>> > > > treated - Mahatma Gandhi" >>>>>>>>>>> > > > >>>>>>>>>>> > > > +91 73500 12833 >>>>>>>>>>> > > > deicool@gmail.com >>>>>>>>>>> > > > >>>>>>>>>>> > > > Facebook: >>>>>>>>>>> > > > https://www.facebook.com/deicool >>>>>>>>>>> > > > LinkedIn: www.linkedin.com/in/deicool >>>>>>>>>>> > > > >>>>>>>>>>> > > > "Plant a Tree, Go Green" >>>>>>>>>>> > > > >>>>>>>>>>> > > > Make In India : >>>>>>>>>>> > > > http://www.makeinindia.com/home >>>>>>>>>>> > > > >>>>>>>>>>> > > > >>>>>>>>>>> > > > On Tue, Oct 26, 2021 at 5:15 PM Alex >>>>>>>>>>> > > > <al-php@none.at> >>>>>>>>>>> wrote: >>>>>>>>>>> > > > > Hi. >>>>>>>>>>> > > > > >>>>>>>>>>> > > > > On 26.10.21 11:53, Deepak Goel >>>>>>>>>>> > > > > wrote: >>>>>>>>>>> > > > > > Hello >>>>>>>>>>> > > > > > >>>>>>>>>>> > > > > > I have a very simple PHP >>>>>>>>>>> > > > > > application which I develop on >>>>>>>>>>> > > Apache- >>>>>>>>>>> > > > > Web-Server. However the application >>>>>>>>>>> > > > > does >>>>>>>>>>> > > > > > not scale beyond 1500 >>>>>>>>>>> > > > > > concurrent users (150 >>>>>>>>>>> requests/sec), >>>>>>>>>>> > > even >>>>>>>>>>> > > > > though there is plenty of hardware >>>>>>>>>>> > > > > > available (CPU is getting >>>>>>>>>>> > > > > > utilized 15%, Memory is >>>>>>>>>>> getting >>>>>>>>>>> > > > > utilized 15%). >>>>>>>>>>> > > > > > >>>>>>>>>>> > > > > > On a similar note, when I >>>>>>>>>>> > > > > > develop the same application >>>>>>>>>>> in >>>>>>>>>>> > > Java, >>>>>>>>>>> > > > > it scales to more than 6000 >>>>>>>>>>> > > > > concurrent >>>>>>>>>>> > > > > > users (600 requests/sec) on >>>>>>>>>>> > > > > > the same hardware. >>>>>>>>>>> > > > > > >>>>>>>>>>> > > > > > Any pointers on how to address >>>>>>>>>>> > > > > > this scalability issue? >>>>>>>>>>> > > > > >>>>>>>>>>> > > > > The question is how >>>>>>>>>>> > > > > "simple" is the PHP Code? >>>>>>>>>>> > > > > Maybe you can tune the Code or use >>>>>>>>>>> > > > > another Server in >>>>>>>>>>> front of >>>>>>>>>>> > > PHP >>>>>>>>>>> > > > > FPM like haproxy, Caddy, nginx? >>>>>>>>>>> > > > > Maybe you can try to run >>>>>>>>>>> >>>>>>>>>>> https://github.com/spiral/roadrunner >>>>>>>>>>> > > to >>>>>>>>>>> > > > > execute the PHP Code. >>>>>>>>>>> > > > > >>>>>>>>>>> > > > > Jm2c >>>>>>>>>>> > > > > >>>>>>>>>>> > > > > Regards >>>>>>>>>>> > > > > Alex >>>>>>>>>>> > > > > >>>>>>>>>>> > > > > > Thanks! >>>>>>>>>>> > > > > > >>>>>>>>>>> > > > > > Deepak >>>>>>>>>>> > > > > > "The greatness of a >>>>>>>>>>> > > > > > nation can be judged by the way its >>>>>>>>>>> > > animals >>>>>>>>>>> > > > > are treated - Mahatma Gandhi" >>>>>>>>>>> > > > > > >>>>>>>>>>> > > > > > +91 73500 12833 >>>>>>>>>>> > > > > > deicool@gmail.com >>>>>>>>>>> > > > > > <mailto:deicool@gmail.com> >>>>>>>>>>> > > > > > >>>>>>>>>>> > > > > > Facebook: >>>>>>>>>>> > > > > > https://www.facebook.com/deicool < >>>>>>>>>>> > > > > >>>>>>>>>>> > > > > https://www.facebook.com/deicool> >>>>>>>>>>> > > > > > LinkedIn: >>>>>>>>>>> > > > > > www.linkedin.com/in/deicool < >>>>>>>>>>> > > > > >>>>>>>>>>> > > > > http://www.linkedin.com/in/deicool> >>>>>>>>>>> > > > > > >>>>>>>>>>> > > > > > "Plant a Tree, Go >>>>>>>>>>> > > > > > Green" >>>>>>>>>>> > > > > > >>>>>>>>>>> > > > > > Make In India : >>>>>>>>>>> > > > > > http://www.makeinindia.com/home < >>>>>>>>>>> > > > > V$���%R��y�Z >>>>>>>>>>> > > > > 7�http://www.makeinindia.com/home> >>>>>>>>>>> > > > > >>>>>>>>>>> > > >>>>>>>>>>> >>>>>>>>>>>